WO2021054400A1 - 3dプリンターの光造形後のポストキュア方法 - Google Patents
3dプリンターの光造形後のポストキュア方法 Download PDFInfo
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- WO2021054400A1 WO2021054400A1 PCT/JP2020/035304 JP2020035304W WO2021054400A1 WO 2021054400 A1 WO2021054400 A1 WO 2021054400A1 JP 2020035304 W JP2020035304 W JP 2020035304W WO 2021054400 A1 WO2021054400 A1 WO 2021054400A1
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- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
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Definitions
- the present invention relates to a post-cure method after stereolithography of a 3D printer. Specifically, the present invention relates to a method for manufacturing a prosthetic device, a manufacturing device for a prosthetic device, a prosthetic device, and a covering device.
- the stereolithography method is mainly used in dentistry.
- the stereolithography method is a method of producing a modeled body by irradiating a liquid photocurable resin composition with light (ultraviolet rays or the like) to gradually cure the resin.
- the stereolithography method includes a stereolithography (SLA) method and a digital light processing (DLP) method.
- SLA stereolithography
- DLP digital light processing
- Some models produced by this stereolithography method are in a state of not being sufficiently cured (hereinafter, may be referred to as a "semi-cured state") before photopolymerization by a post-curing device. Post-cure may be performed on such a semi-cured model.
- Post-cure is a method of irradiating a semi-cured model with light (ultraviolet rays or the like) to obtain a final-cured model.
- the model body that has been post-cured is defined as the model body in the final cured state.
- Patent Document 1 discloses a method of performing post-cure (secondary curing) treatment on a semi-cured modeled body.
- a semi-cured model is fitted to a model and then irradiated with light while being fixed by a fixing member to secondarily cure the semi-cured model. ..
- Patent Document 1 still has room for improvement in terms of improving the suitability of the prosthetic device.
- an object of the present invention is to provide a method for manufacturing a prosthetic device, a prosthetic device manufacturing device, a prosthetic device, and a vacuum packaging device, which can improve the suitability of the prosthetic device.
- the method for manufacturing the prosthetic device is as follows.
- a method of manufacturing dental prosthetic devices Acquisition process to acquire scan data of a model that reproduces at least a part of the patient's oral cavity,
- a modeling data creation process that creates modeling data for a dental model based on the scan data.
- a model body manufacturing process for manufacturing a model body based on the model data.
- An exhaust step in which the film is deformed by exhausting the air in the portion covered with the film, and the modeled body is brought into close contact with the model.
- a curing step of curing the model in a state where the model is in close contact with the model. including.
- the covering device is A coating device used to manufacture a prosthetic device. It has an exhaust section that exhausts the air in the film that covers at least a part of the model and the model. The exhaust portion deforms the film by exhausting the air in the portion covered with the film, and brings the modeled body into close contact with the model.
- the manufacturing apparatus of the prosthetic apparatus is A device for manufacturing a dental prosthetic device by bringing a model body produced based on scan data of a model that reproduces the oral cavity of a patient and the model into close contact with each other and hardening the model, and comprising the covering device of the above-described embodiment. ..
- the prosthetic device of one aspect of the present invention is With at least a part of the model and the model covered with a film, the model is brought into close contact with the model by exhausting the air in the portion covered with the film, and the model is brought into close contact with the model. It is produced by a modeled body that has been cured in close contact with.
- the suitability of the prosthetic device can be improved.
- FIG. 5 It is a perspective view which shows an example of the covering apparatus of Embodiment 5 which concerns on this invention. It is another perspective view which shows an example of the covering apparatus of Embodiment 5 which concerns on this invention. It is a block diagram which shows an example of the internal structure of the covering apparatus of Embodiment 5 which concerns on this invention. It is a block diagram which shows an example of the manufacturing apparatus of the prosthetic apparatus of Embodiment 6 which concerns on this invention. It is a flowchart which shows an example of the manufacturing method of the prosthetic apparatus of Embodiment 6 which concerns on this invention. It is a schematic diagram which shows an example of a model. It is the schematic which shows an example of the modeled body in a semi-cured state.
- the modeled body produced by the 3D printer may be in a state of not being sufficiently cured before photopolymerization by the post-curing device, that is, in a "semi-cured state".
- the semi-cured model is post-cured by, for example, a post-cure device that irradiates light (ultraviolet rays, etc.) in a wavelength range of 350 to 500 nm. Since the semi-cured model bodies laminated at this time are not polymerized, linear shrinkage of about 1 to 5% occurs. At this time, there is a problem that polymerization shrinkage occurs and the modeled body in the final cured state is easily deformed.
- Patent Document 1 In the post-cure method described in Patent Document 1, a semi-cured model is fitted to a model and then irradiated with light while being fixed by a fixing member to secondarily cure the semi-cured model. ing.
- the method described in Patent Document 1 has a problem that a portion other than the portion fixed by the fixing member is easily deformed, and a clinically satisfactory final cured model cannot be obtained.
- a portion that is not fixed by the fixing member may be deformed by post-cure and float from the model, making it incompatible.
- the present inventors covered the semi-cured model and the model with a film, and exhausted the air in the portion covered with the film to make the semi-cured model a model. On the other hand, we found that they were in close contact with each other. As a result, the post-cure treatment can be performed by irradiating the model in a semi-cured state with light in close contact with the model.
- the method for manufacturing the prosthetic device is A method of manufacturing dental prosthetic devices, Acquisition process to acquire scan data of a model that reproduces at least a part of the patient's oral cavity, A modeling data creation process that creates modeling data for a dental model based on the scan data. A model body manufacturing process for manufacturing a model body based on the model data. A coating step of attaching the model to the model and covering at least a part of the model and the model with a film. An exhaust step in which the film is deformed by exhausting the air in the portion covered with the film, and the modeled body is brought into close contact with the model. A curing step of curing the model in a state where the model is in close contact with the model. including.
- the curing step is A light irradiation step of irradiating light with the model in close contact with the model, A heating step of heating the model in close contact with the model, You may have at least one of them.
- the model body manufacturing step is To prepare a modeled body in the first cured state based on the modeled data, By irradiating the modeled body in the first cured state with light, a modeled body in the second cured state that is cured from the first cured state can be produced.
- the curing step may include a heating step of heating the modeled body in the second cured state in a state of being in close contact with the model.
- the heating temperature in the heating step may be 50 ° C. or higher and 130 ° C. or lower.
- the exhaust step may include an adjustment step of adjusting the degree of vacuum of the portion covered with the film to 40% or more and 99.9% or less.
- the polymerization rate of the modeled body produced in the modeled body manufacturing step may be 50% or more and 98% or less.
- the elongation rate of the film is 50% or more and 500% or less.
- the film may transmit light having a wavelength of 100 nm or more and 780 nm or less.
- the suitability of the prosthetic device can be further improved.
- the light for curing the modeled body easily passes through the film.
- the modeled body may be produced by a digital light processing type stereolithography device in the modeled body manufacturing step.
- the modeled body may be any one of a crown, a bridge, a resin bed, a resin bed denture and an orthodontic sprint.
- a mold making step of making a mold for manufacturing a prosthetic device by using the cured model as a casting pattern Casting process of introducing molten metal into the mold, A digging process in which the mold is broken and the casting is taken out. A finishing process in which the casting is adjusted with a grinding material and an abrasive to finish it as a prosthetic device. May include.
- the covering device is A coating device used to manufacture a prosthetic device. It has an exhaust section that exhausts the air in the film that covers at least a part of the model and the model. The exhaust portion deforms the film by exhausting the air in the portion covered with the film, and brings the modeled body into close contact with the model.
- the covering device may further include an adjusting unit that adjusts the degree of vacuum of the portion covered with the film to 40% or more and 99.9% or less.
- the manufacturing apparatus of the prosthetic apparatus is A device for manufacturing a dental prosthetic device by bringing a model body produced based on scan data of a model that reproduces the oral cavity of a patient and the model into close contact with each other and hardening the model, and comprising the covering device of the above-described embodiment. ..
- a modeling data creation device that acquires scan data of a model that reproduces the oral cavity of a patient and creates modeling data of a dental model based on the scan data.
- a stereolithography device that creates a modeled body based on the modeled data.
- a curing device that cures the model while the model is in close contact with the model. May be provided.
- the curing device is A light irradiating device that irradiates light with the model in close contact with the model.
- a heating device that heats the model in close contact with the model, You may have at least one of them.
- the stereolithography apparatus prepares a modeled body in a first cured state based on the modeling data.
- the manufacturing apparatus further includes a light irradiation device for producing a second cured model that is hardened from the first cured state by irradiating the model in the first cured state with light.
- the curing device may have a heating device that heats the modeled body in the second cured state in a state of being in close contact with the model.
- the heating temperature of the heating device may be 50 ° C. or higher and 130 ° C. or lower.
- the prosthesis device of one aspect of the present invention attaches the model to the model by exhausting air from the portion covered with the film while at least a part of the model and the model is covered with the film. It is produced by a modeled body that is brought into close contact with the model and cured in a state where the modeled body is in close contact with the model.
- the method for manufacturing the prosthetic device is as follows.
- a method of manufacturing dental prosthetic devices Modeling process for producing dental models,
- FIG. 1 is a block diagram showing an example of a manufacturing apparatus 1 of the prosthetic apparatus according to the first embodiment of the present invention.
- the prosthesis device manufacturing apparatus 1 includes a fabrication device 10 for producing a model 3 having a metal casting floor pattern based on a model 2, and a prosthesis device 4 for a metal casting bed using the model 3. 20 is provided with a casting apparatus 20 for producing the above.
- the scanning apparatus 21 is shown in FIG.
- the manufacturing device 10 includes a modeling data creating device 11, a stereolithography device 12, a vacuum packaging device 13, and a light irradiation device 14.
- the vacuum packaging device 13 will be described as an example of the covering device.
- the light irradiation device 14 will be described as an example of the curing device.
- the modeling data creation device 11 acquires the scan data of the model 2 that reproduces the oral cavity of the patient, and creates the modeling data of the dental modeling body 3 based on the scan data.
- FIG. 2 is a schematic view showing an example of the model 2.
- the model 2 is a model that reproduces the oral cavity of a patient. Model 2 imitates the oral shape of the patient's upper jaw. Model 2 is produced by taking an impression of the patient's oral cavity with an impression material and pouring plaster there.
- the scan data of the model 2 is acquired by the scanning device 21.
- the scanning device 21 is, for example, a 3D scanner that scans the three-dimensional shape of the model 2.
- the scan data of the model 2 acquired by the scanning device 21 is transmitted to the modeling data creating device 11.
- the modeling data creating device 11 receives the scan data of the model 2 from the scanning device 21.
- the modeling data creation device 11 creates modeling data of the dental modeling body 3 based on the scan data of the model 2.
- the modeling data creation device 11 creates modeling data of the dental modeling body 3 on the model 2.
- the modeling data includes data on the three-dimensional shape of the dental modeling body 3.
- modeling data of the modeling body 3 having a shape and size suitable for the model 2 is created.
- the modeling data is created using, for example, dental CAD.
- the modeling data creation device 11 transmits the created modeling data to the stereolithography device 12.
- the modeling data of the dental modeling body 3 is the shape data of the casting pattern for manufacturing the prosthetic device 4 of the metal casting floor.
- the stereolithography apparatus 12 produces a semi-cured modeled body based on the modeled data.
- the stereolithography apparatus 12 is, for example, a 3D printer.
- the semi-cured model is produced based on the model data, but is not sufficiently cured before photopolymerization by the light irradiation device 14 which is a post-cure device. Means the body.
- a stereolithography (SLA) method and a digital light processing (DLP) method 3D printer can be preferably used for the stereolithography apparatus 12.
- the stereolithography apparatus 12 is a DLP system.
- the DLP method has a high laminating speed and can form a semi-cured model in a short time.
- the modeling conditions such as the light intensity and the exposure time of the stereolithography apparatus 12 can be appropriately adjusted according to the shape of the modeled body in the semi-cured state and the required dimensions.
- the stereolithography device 12 receives modeling data from the modeling data creating device 11.
- the stereolithography apparatus 12 produces a semi-cured modeled body based on the received modeling data.
- FIG. 3 is a schematic view showing an example of the model 5 in a semi-cured state.
- the semi-cured model 5 shown in FIG. 3 is an example, and is not limited thereto.
- FIG. 4 is a schematic view showing an example of a state in which the semi-cured model 5 is attached to the model 2. As shown in FIG. 4, the semi-cured model 5 formed by the stereolithography device 12 is attached to the model 2.
- the vacuum packaging device 13 exhausts the air in the film in a state where at least a part of the semi-cured model 5 and the model 2 is covered with the film. As a result, the semi-cured model 5 can be brought into close contact with the model 2.
- the vacuum packaging device 13 covers at least a part of the model 5 and the model 2 with the film 6 and exhausts the air in the portion covered with the film 6 to deform the film 6 and model the model 5 with the model 2. It is a coating device that is in close contact with the air.
- the vacuum packaging device 13 covers the semi-cured model 5 and the model 2 with a film, and exhausts the air in the portion covered with the film.
- the film is deformed by creating a negative pressure inside the film.
- the semi-cured model 5 is pressed against the model 2. In this way, the semi-cured model 5 is maintained in a state of being fitted to the model 2.
- FIG. 5 is a schematic view showing an example of a state in which the semi-cured model 5 and the model 2 are covered with a film 6 and exhausted.
- the semi-cured model 5 and the model 2 are put in the bag-shaped film 6 to exhaust the air in the film 6.
- the negative pressure inside the film 6 deforms the film 6 and presses the semi-cured model 5 against the model 2.
- the semi-cured model 5 is in close contact with the model 2.
- Film 6 is a flexible film having translucency.
- the film 6 is a film capable of transmitting the light irradiated by the light irradiation device 14. Further, the film 6 has flexibility to adhere to the semi-cured model 5 and the model 2.
- the film 6 preferably has, for example, a total light transmittance of 60% or more and an elongation rate of 50% or more and 500% or less.
- the material for forming the film 6 is not particularly limited, and for example, nylon or polyethylene can be preferably used.
- the growth rate is calculated by the following formula.
- Lo is the film length before the test, and L is the film length at the time of breaking.
- the elongation rate of the film 6 is less than 50%, the flexibility of the film 6 is reduced, and in the case where the palate is deep, the semi-cured model 5 cannot be sufficiently pressed against the model 2, and the final result.
- the cured model 3 may become incompatible.
- the elongation rate is larger than 500%, the force for pressing the semi-cured model 5 against the model 2 becomes large, and the semi-cured model 5 is unintentionally deformed, resulting in the final cured model 3. May not fit.
- the film 6 transmits light having a wavelength of 100 nm or more and 780 nm or less. Preferably, the film 6 transmits light having a wavelength of 300 nm or more and 600 nm or less. More preferably, the film 6 transmits light having a wavelength of 350 nm or more and 500 nm or less.
- the film 6 may be embossed.
- the film 6 may be provided with irregularities.
- air can be easily discharged from the inside of the film 6.
- the film 6 may be formed in a bag shape.
- the bag-shaped film 6 may have an uneven surface provided with irregularities.
- a continuous groove may be formed inside the film 6 from the other end on the side opposite to the opening of the film 6 toward the exhaust pipe of the exhaust portion 15 described later.
- the continuous groove functions as an air guide, and the air inside the film 6 is easily discharged to the exhaust pipe.
- the continuous groove may be deformed and closed as the air in the film 6 is discharged. Thereby, the degree of vacuum in the film 6 can be improved.
- the vacuum packaging device 13 includes an exhaust unit 15 and an adjusting unit 16.
- the exhaust unit 15 exhausts the air in the film 6 that covers at least a part of the semi-cured model 5 and the model 2.
- the exhaust unit 15 includes, for example, a vacuum pump and an exhaust pipe connected to the vacuum pump. One end of the exhaust pipe is connected to the vacuum pump, and the other end of the exhaust pipe is attached to the film 6. That is, in the exhaust unit 15, a film 6 that covers the semi-cured model 5 and the model 2 is attached to the other end of the exhaust pipe. Specifically, the other end of the exhaust pipe is arranged in the film 6. The connection between the film 6 and the exhaust pipe is sealed with a sealing material or the like.
- the exhaust unit 15 can exhaust the air in the film 6 through the exhaust pipe by a vacuum pump.
- the adjusting unit 16 adjusts the degree of vacuum of the portion covered with the film 6.
- the adjusting unit 16 has, for example, a valve and an adjusting tube connected to the valve. One end of the control tube is open to the outside air, and the other end of the control tube is arranged inside the film 6. The connection between the film 6 and the control tube is sealed with a sealing material or the like.
- a valve is connected to the adjusting tube. By opening the valve, air is supplied from the adjusting tube to the inside of the film 6, and by closing the valve, the supply of air from the adjusting tube to the inside of the film 6 is stopped.
- the adjusting unit 16 can adjust the degree of vacuum in the film 6 by opening and closing the valve.
- the adjusting unit 16 may have a vacuum pressure sensor that measures the degree of vacuum of the portion covered with the film 6.
- the adjusting unit 16 may control the opening and closing of the valve based on the degree of vacuum measured by the vacuum pressure sensor, and may adjust the degree of vacuum in the film 6.
- the adjusting unit 16 adjusts the degree of vacuum of the portion covered with the film 6 to 40% or more and 95% or less. Preferably, the adjusting unit 16 adjusts the degree of vacuum of the portion covered with the film 6 to 50% or more and 90% or less. More preferably, the adjusting unit 16 adjusts the degree of vacuum of the portion covered with the film 6 to 60% or more and 70% or less.
- the adjusting unit 16 adjusts the degree of vacuum in the film 6 within the above numerical range to improve the compatibility between the model 3 and the model 2 and facilitate the removal.
- the adjusting unit 16 can suppress the occurrence of unintended deformation of the semi-cured model 5.
- the vacuum packaging device 13 has a sealing portion (not shown) that seals the film 6 after exhausting the air in the film 6.
- the inside of the film 6 can be sealed by sealing the film 6 after the air is exhausted by the sealing portion.
- the semi-cured model 5 can be kept in close contact with the model 2.
- the light irradiation device 14 irradiates light with the semi-cured model 5 in close contact with the model 2. As a result, the semi-cured model 5 is cured, and the final cured model 3 is completed.
- the light irradiation device 14 is a curing device that cures the model 5 by irradiating the model 5 with light.
- the light irradiation device 14 post-cure the model 5 in a semi-cured state. It should be noted that the modeled body in the final cured state does not have to be partially cured. As for the modeled body in the final cured state, for example, it is preferable that the modeled body has 0.1 to 20% by weight of unpolymerized monomers as a whole.
- the light irradiation device 14 irradiates, for example, ultraviolet light or visible light.
- the light irradiation device 14 may be any device capable of irradiating light capable of curing the semi-cured model 5.
- the light intensity and the exposure time in the light irradiation device 14 can be appropriately adjusted according to the shape and required dimensions of the model 3 in the final cured state.
- the wavelength of the light emitted from the light irradiation device 14 is, for example, a wavelength of 100 nm or more and 780 nm or less.
- the wavelength of light is 300 nm or more and 600 nm or less. More preferably, the wavelength of light is 350 nm or more and 500 nm or less.
- the light irradiation device 14 is ultraviolet light, and the wavelength band of the light is preferably 350 nm or more and 500 nm or less.
- the light irradiation device 14 is not limited to this, and the semi-cured model 5 may be cured by exposing it to a fluorescent lamp or sunlight.
- the manufacturing device 1 is controlled by, for example, a control device (not shown).
- the control device includes, for example, one or more processors and a memory.
- processors are, for example, central processing units (CPUs), microprocessors, or other processing units capable of executing computer-executable instructions.
- CPUs central processing units
- microprocessors or other processing units capable of executing computer-executable instructions.
- the processor can execute the instructions stored in memory.
- the memory stores the data of the control device.
- the memory includes, for example, a computer recording medium, including RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, DVD or other optical disk storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage. Includes a device, or any medium that can be used to store the desired information and is accessible to the control device.
- the manufacturing apparatus 1 may include a communication unit (not shown).
- the communication unit complies with predetermined communication standards (for example, LAN, Wi-Fi (registered trademark), Bluetooth (registered trademark), USB, HDMI (registered trademark), CAN (controller area network), SPI (Serial Peripheral Interface)). Includes a circuit that communicates with an external device.
- the components of the manufacturing apparatus 1 can be realized by an arithmetic unit that can be realized by a semiconductor element or the like. These components can be composed of, for example, a microcomputer, a CPU, an MPU, a GPU, a DSP, an FPGA, and an ASIC. The functions of these components may be configured by hardware alone, or may be realized by combining hardware and software.
- the material forming the model 3 may be any material that can be used in the SLA method and / or the DLP method of the stereolithography apparatus 12.
- the material for forming the model 3 may be any material having photocurability such as a (meth) acrylate-based resin, and a material having less polymerization shrinkage is preferable.
- the polymerizable acrylic compound that can be used in the composition of the material that forms the model 3 is not limited, but is widely used as a radically polymerizable monomer, is used in the fields of dentistry and chemical industry, and is unsaturated with high biosafety. It is selected from compounds containing a double bond group.
- one or more unsaturated double bond groups such as methyl acrylate, methyl methacrylate, methacrylic acid, ethyl acrylate, ethyl methacrylate, isopropyl methacrylate, (meth) acryloyl group, (meth) acrylamide group and vinyl group.
- the monomer, oligomer or polymer having is preferably used.
- (meth) acrylate means both acrylates and methacrylates.
- a hydrocarbon group a phenyl group, a hydroxyl group, an acidic group, an acid amide group, an amino group, a thiol group, a disulfide group, a cyclic group, a heterocyclic group, a halogen group, and a silanol group.
- a compound having one or more or more pyrrolidone groups, urethane bonds, ester bonds, ether bonds, alkylene glycol groups and the like can be mentioned.
- Suitable radically polymerizable monomers are (meth) acrylic acid ester derivatives having the above functional groups and bonds.
- the radically polymerizable monomer is preferably a combination of a crosslinkable monomer and a diluted monomer in order to maintain an appropriate viscosity.
- crosslinkable monomer examples include urethane (meth) acrylates including mono-, di-, tri-, and tetra-ethylene glycol di (meth) acrylates.
- Urethane di- (meth) acrylate refers to a reaction product having a molar ratio of 1: 2 of appropriate diisocyanates and hydroxyalkyl-mono- (meth) acrylates.
- "Urethane tri- (meth) acrylate” is a reaction product of a suitable diisocyanate with hydroxyalkyl-di- (meth) acrylate and hydroxyalkyl-mono- (meth) acrylate in a molar ratio of 1: 1: 1. It is a thing.
- Urethane tetra- (meth) acrylate is a reaction product of a suitable diisocyanate and hydroxyalkyl-di- (meth) acrylate in a 1: 2 molar ratio.
- preferable diluting monomers include mono-, di-, tri-, tetra-ethylene glycol di (meth) acrylates, polyethylene glycol (meth) acrylates, and 1,4-di [(meth) acryloxy] butylene. , 1,6-di [(meth) acryloxy] hexamethylene, neopentyl glycol di (meth) acryloxy] hexamethylene, neopentyl glycol di (meth) acrylate, tetramethylol propane-tetra (meth) acrylate, methyl (meth) Includes acrylates, (meth) acrylamide and styrene. Ethylene glycol di (meth) acrylate and triethylene glycol di (meth) acrylate are preferred. If desired, two or more of these compounds may be used together.
- Photopolymerizable catalysts and reducing agents that can be used in the material forming the model 3 include camphorquinone, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, or methylbenzoin; and / or reducing agents, such as tertiary amines. Etc. can be used.
- the absorption wavelength region of the material forming the model 3 can be initiated by irradiating the composition with light energy preferably having a wavelength in the range of about 300-600 nm.
- Photoinitiators selected from the class of acylphosphine oxides can also be used. Examples of these compounds include monoacylphosphine oxide derivatives, bisacylphosphine oxide derivatives, and triacylphosphine derivatives.
- a material called “ALF” comprising camphorquinone (CQ); butylated hydroxytoluene (BHT); N, N-dimethylaminoneopentyl acrylate, gamma-methacryloxypropyl trimethoxysilane and methacrylic acid is composed.
- CQ camphorquinone
- BHT butylated hydroxytoluene
- N, N-dimethylaminoneopentyl acrylate, gamma-methacryloxypropyl trimethoxysilane and methacrylic acid is composed.
- a filler may be used to improve the strength of the monomer used as the material for forming the model 3.
- the filler include an inorganic filler, an organic filler, an organic-inorganic composite filler, and the like.
- the inorganic filler includes silica, aluminum silicate, alumina, titania, zirconia, and various glasses (fluorine glass, borosilicate glass, soda glass, etc.).
- organic filler examples include polymethyl methacrylate (PMMA), ethyl poly methacrylate, propyl poly methacrylate, butyl poly methacrylate, vinyl acetate, polyethylene glycol, polypropylene glycol, polyvinyl alcohol and the like.
- PMMA polymethyl methacrylate
- ethyl poly methacrylate propyl poly methacrylate
- butyl poly methacrylate vinyl acetate
- polyethylene glycol polypropylene glycol
- polyvinyl alcohol polyvinyl alcohol
- These inorganic fillers and / or fillers may be surface-treated with known titanate coupling agents, aluminate coupling agents, and silane coupling agents.
- the silane coupling agent include ⁇ -methacryloxypropyltrimethoxysilane and ⁇ -methacryloxypropyltriethoxysilane.
- ⁇ -methacryloxypropyltrimethoxysilane is used.
- the surface treatment of the agglomerates and fillers may be carried out with the same type of coupling agent or with different types of coupling agents.
- the casting device 20 is a device for casting the prosthetic device 4 of the metal casting floor using the modeled body 3 manufactured by the manufacturing device 10.
- the casting apparatus 20 may be provided with equipment for performing casting by, for example, a lost wax production method.
- the casting device 20 adjusts, for example, a mold making device for making a mold for manufacturing a prosthesis device using a model 3, a casting device for introducing molten metal into the mold, a digging device for breaking the mold and taking out a casting, and a casting.
- a finishing device for finishing the prosthesis device 4 is provided.
- the manufacturing method of the prosthetic device 4 carried out by the manufacturing device 1 will be described.
- the method of manufacturing the prosthesis device 4 is to use the dental modeling body 3 manufactured by the manufacturing device 10 to manufacture the prosthesis device 4 for the metal casting floor by the casting device 20. Therefore, as a method of manufacturing the prosthetic device 4, a method of manufacturing the dental model 3 and a method of manufacturing the metal cast bed prosthesis 4 using the model 3 will be described.
- FIG. 6 is a flowchart showing an example of a method for manufacturing the model 3 according to the first embodiment of the present invention.
- the steps ST1 to ST6 shown in FIG. 6 are carried out by the manufacturing apparatus 10.
- step ST1 is an acquisition step of acquiring scan data of model 2 that reproduces at least a part of the patient's oral cavity.
- the modeling data creation device 11 acquires the scan data of the model 2 from the scan device 21. Specifically, the scanning device 21 scans the model 2 (see FIG. 2) to acquire the scan data of the model 2. The modeling data creating device 11 acquires the scan data of the model 2 from the scanning device 21.
- Step ST2 is a modeling data creation step of creating modeling data of the dental modeling body 3 based on the scan data.
- the modeling data creation device 11 creates modeling data of the dental modeling body 3 having a shape and size suitable for the model 2 based on the scan data of the model 2 acquired in step ST1.
- Step ST3 is a model body manufacturing step of manufacturing the model body 5 in a semi-cured state based on the model data.
- the stereolithography apparatus 12 produces a semi-cured model 5 based on the model data created in step ST2 (see FIG. 3).
- the polymerization rate of the semi-cured model 5 produced in step ST3 is 50% or more and 98% or less.
- the polymerization rate of the semi-cured model 5 produced in step ST3 is 60% or more and 95% or less. More preferably, the polymerization rate of the semi-cured model 5 produced in step ST3 is 70% or more and 90% or less.
- the polymerization shrinkage becomes large in the curing step (step ST6) described later, or the semi-cured model 5 is too soft, so that the model 5 is in a semi-cured state. Unintentional deformation may occur in the modeled body 5.
- the polymerization rate of the semi-cured model 5 is greater than 98%, it becomes difficult for the semi-cured model 5 to fit the model 2 in the exhaust step (step ST5) described later. Therefore, by setting the polymerization rate of the semi-cured model 5 produced in step ST3 within the above numerical range, the semi-cured model 5 is suitably fitted to the model 2 in the exhaust step (step ST5) described later. Can be made to. Further, in the curing step (step ST6) described later, the polymerization shrinkage can be reduced, and the unintended deformation of the semi-cured model 5 can be suppressed.
- Step ST4 is a coating step in which the semi-cured model 5 is attached to the model 2 and at least a part of the semi-cured model 5 and the model 2 is covered with the film 6.
- the vacuum packaging device 13 attaches the semi-cured model 5 formed in step ST3 to the model 2 (see FIG. 4), and forms the semi-cured model 5 and the model 2 into a film 6 Cover with (see FIG. 5).
- the entire surface of the semi-cured model 5 and the model 2 is covered with the film 6.
- the vacuum packaging device 13 covers the semi-cured model 5 and the model 2 with the film 6 has been described, but the present invention is not limited to this.
- the semi-cured model 5 and the model 2 may be covered with a film 6 by a device separate from the vacuum packaging device 13.
- the method of covering the semi-cured model 5 and the model 2 with the film 6 may be performed by any method or any device.
- Step ST5 is an exhaust step in which the film 6 is deformed by exhausting the air in the portion covered with the film 6, and the semi-cured model 5 is brought into close contact with the model 2.
- the exhaust portion 15 of the vacuum packaging device 13 exhausts the air in the portion covered by the film 6 in step ST4.
- the inside of the film 6 is made negative pressure, the film 6 is deformed, and the semi-cured model 5 is pressed against the model 2 by the film 6.
- the semi-cured model 5 is in close contact with the model 2.
- Step ST5 may include an adjustment step of adjusting the degree of vacuum of the portion covered with the film 6.
- the adjusting unit 16 of the vacuum packaging device 13 adjusts the degree of vacuum of the portion covered with the film 6 to 40% or more and 95% or less.
- the degree of vacuum of the portion covered with the film 6 is adjusted to 50% or more and 90% or less. More preferably, in the adjusting step, the degree of vacuum of the portion covered with the film 6 is adjusted to 60% or more and 70% or less.
- step ST5 after the air in the portion covered with the film 6 is exhausted, the film 6 is sealed by the sealing portion of the vacuum packaging device 13. As a result, the semi-cured model 5 and the model 2 are maintained in close contact with each other.
- Step ST6 is a curing step (light irradiation step) in which the semi-cured model 5 is cured by irradiating the model 2 with light in close contact with the model 2.
- the light irradiation device 14 irradiates light with the semi-cured model 5 in close contact with the model 2.
- the light emitted from the light irradiation device 14 cures the semi-cured model body 5, and is, for example, ultraviolet light.
- the light emitted from the light irradiation device 14 passes through the film 6 and is applied to the semi-cured modeled body 5.
- the semi-cured model 5 is cured.
- the modeled body 3 in the final cured state is completed.
- the curing step may be referred to as a light irradiation step.
- the modeled body 3 can be manufactured by carrying out steps ST1 to ST6.
- step ST11 is a model body manufacturing step of manufacturing the model body 3 by the method of manufacturing the model body 3 shown in FIG.
- the modeled body 3 is produced by carrying out steps ST1 to ST6 shown in FIG. 6 by the manufacturing apparatus 10.
- Step ST12 is a mold making step of making a mold for manufacturing a prosthetic device by using the model 3 as a casting pattern.
- Step ST12 includes a wax-up step, a burial step and an incineration step.
- FIG. 8A is a schematic view showing an example of the wax-up process.
- the model 3 produced in step ST11 is waxed up on a rubber table. Specifically, spruing is performed to adjust the flow of the molten metal when the molten metal is introduced into the mold.
- FIG. 8B is a schematic view showing an example of the burial process.
- the model 3 after the wax-up step is buried in the burial material 31 kneaded with water.
- the burial material 31 include a cristobalite burial material and a phosphate-based burial material.
- the modeled body 3 after performing the wax-up step is arranged in the ring 30.
- the model 3 is buried in the buried material 31 by injecting the buried material 31 kneaded with water into the ring 30.
- the burial material 31 is solidified.
- the bottom of the ring 30 may be closed with, for example, a rubber base until the buried material 31 hardens. After the burial material 31 has hardened, the bottom of the ring 30 does not have to be closed.
- FIG. 8C is a schematic view showing an example of the incineration process.
- the ring 30 and the rubber base are removed, and the solid burial material containing the model 3 is incinerated.
- the model 3 is melted and the model 3 is removed from the solidified buried material.
- the solidified buried material remains without melting.
- a cavity in the shape of the model 3 is formed inside the solidified buried material.
- This solidified investment material is used as a mold 32 for manufacturing a prosthetic device.
- step ST13 is a casting step of introducing the molten metal 33 into the mold 32.
- FIG. 8D is a schematic view showing an example of a casting process. As shown in FIG. 8D, in the casting process, the molten metal 33 is introduced into the mold 32. After introducing the molten metal 33 into the mold 32, the molten metal 33 is solidified.
- step ST14 is a digging step of breaking the mold 32 and taking out the casting 34.
- the mold 32 is broken and the casting 34 inside the mold 32 is taken out.
- the casting 34 is a metal casting solidified in step ST13, and is formed in the same shape as the modeled body 3.
- FIG. 8E is a schematic view showing an example of the digging process.
- FIG. 8E shows the casting 34 taken out of the mold 32.
- Step ST15 is a finishing step of adjusting the casting 34 and finishing it in the prosthetic device 4.
- the shape of the casting 34 taken out in step ST14 is adjusted with a grinding material and an abrasive material, and the prosthetic device 4 is finished.
- the prosthetic device 4 for the metal casting floor can be manufactured by carrying out steps ST11 to ST15.
- FIG. 9 is a schematic view showing an example of the prosthetic device 4 according to the first embodiment of the present invention.
- FIG. 9 shows an example of a state in which the prosthetic device 4 is attached to the model 2.
- the prosthetic device 4 shown in FIG. 9 is an example, and the prosthetic device 4 is not limited to this.
- the manufacturing device 1 of the prosthetic device 4 includes a manufacturing device 10 for the modeled body 3 and a casting device 20 for manufacturing the prosthetic device 4 for the metal casting floor using the modeled body 3.
- the manufacturing device 10 includes a modeling data creating device 11, a stereolithography device 12, a vacuum packaging device 13, and a light irradiation device 14.
- the modeling data creating device 11 acquires the scan data of the model 2 that reproduces the oral cavity of the patient, and creates the modeling data of the dental model 3 based on the scan data.
- the stereolithography apparatus 12 produces a semi-cured model 5 based on the model data.
- the vacuum packaging device 13 exhausts the air in the film 6 in a state where at least a part of the semi-cured model 5 and the model 2 is covered with the film 6.
- the semi-cured model 5 is brought into close contact with the model 2.
- the light irradiation device 14 cures the semi-cured model 5 by irradiating the model 2 with light in a state where the semi-cured model 5 is in close contact with the model 2.
- the semi-cured model 5 produced by the stereolithography device 12 is cured by the light of the light irradiation device 14 in a state of being in close contact with the model 2.
- the semi-cured model 5 is finally cured by the light emitted by the light irradiation device 14, warpage and deformation due to shrinkage can be suppressed.
- the manufacturing method of the prosthetic device 4 includes a method of manufacturing the modeled body 3 and a method of manufacturing the prosthetic device 4 of the metal casting floor using the modeled body 3.
- the method for producing the modeled body 3 includes an acquisition step ST1, a modeling data creating process ST2, a modeled body manufacturing process ST3, a coating process ST4, an exhaust process ST5, and a curing step ST6.
- the acquisition step ST1 acquires scan data of the model 2 that reproduces at least a part of the patient's oral cavity.
- the modeling data creation step ST2 creates modeling data of the dental modeling body 3 based on the scan data.
- the modeled body manufacturing step ST3 manufactures the modeled body 5 in a semi-cured state based on the modeling data.
- the semi-cured model 5 is attached to the model 2, and at least a part of the semi-cured model 5 and the model 2 is covered with the film 6.
- the film 6 is deformed by exhausting the air in the portion covered with the film 6, and the semi-cured model 5 is brought into close contact with the model 2.
- the semi-cured model 5 is cured by irradiating light with the semi-cured model 5 in close contact with the model 2.
- the semi-cured model 5 is cured in close contact with the model 2.
- the semi-cured model 5 is finally cured, warpage and deformation due to shrinkage can be suppressed.
- it is possible to improve the compatibility of the model 3 in the final cured state with the model 2.
- it is possible to improve the suitability of the metal casting bed prosthesis device 4 manufactured by the method for manufacturing the metal casting bed prosthesis device 4 to the patient's oral cavity.
- the more complicated the shape of the prosthetic device the more difficult it is to improve the compatibility.
- the method described in Patent Document 1 cannot prevent deformation of a portion that is not fixed by the fixing member, so that the modeled body having a more complicated shape is more likely to float from the model.
- the manufacturing apparatus 1 and the manufacturing method of the prosthetic device 4 it is possible to suppress the floating and deformation of the model 5 from the model 2 even when the prosthetic device 4 having a complicated shape is manufactured. Therefore, even when the prosthetic device 4 having a complicated shape is manufactured, the compatibility of the prosthetic device 4 can be improved.
- the model 1 and the model 3 produced by the production method are used as a casting pattern, it is preferably for a metal casting floor.
- the metal casting floor has a complicated structure with a mixture of major connectors called inner and clasps called outer. According to the manufacturing apparatus 1 and the manufacturing method, a modeled body 3 in a final cured state having good compatibility with the model 2 can be obtained.
- the exhaust step ST5 includes an adjusting step of adjusting the degree of vacuum of the portion covered with the film 6 to 40% or more and 95% or less.
- the adjusting step adjusts the degree of vacuum of the portion covered with the film 6 to 50% or more and 90% or less. More preferably, the adjusting step adjusts the degree of vacuum of the portion covered with the film 6 to 60% or more and 70% or less. With such a configuration, the degree of vacuum can be adjusted, and the compatibility of the model 3 in the final cured state with respect to the model 2 can be adjusted.
- the polymerization rate of the semi-cured model 5 produced in the model manufacturing step ST3 is 50% or more and 98% or less.
- the polymerization rate of the semi-cured model 5 is 60% or more and 95% or less. More preferably, the polymerization rate of the semi-cured model 5 is 70% or more and 90% or less.
- the modeled body 5 in a semi-cured state is manufactured by the stereolithography device 12 of the digital light processing method. With such a configuration, the modeled body 3 can be manufactured in a shorter time.
- the film 6 transmits light having a wavelength of 100 nm or more and 780 nm or less. Preferably, the film 6 transmits light having a wavelength of 300 nm or more and 600 nm or less. More preferably, the film 6 transmits light having a wavelength of 350 nm or more and 500 nm or less. With such a configuration, light for curing the semi-cured model 5 such as ultraviolet light and visible light can easily pass through the film 6.
- the prosthesis device 4 is (i) half-cured by exhausting air from the portion covered with the film 6 in a state where at least a part of the semi-cured model 5 and the model 2 is covered with the film 6.
- the semi-cured model 5 is cured by irradiating light with the cured model 5 in close contact with the model 2 and (ii) the semi-cured model 5 in close contact with the model 2. It is characterized in that it is produced by the formed body 3.
- Such a configuration has the effect of improving the compatibility of the patient with the oral cavity.
- the vacuum packaging device 13 is a vacuum packaging device used for manufacturing a prosthetic device, and is an exhaust that exhausts air in a film 6 that covers at least a part of a semi-cured model 5 and a model 2.
- a unit 15 is provided.
- the exhaust unit 15 deforms the film 6 by exhausting the air in the portion covered with the film 6, and brings the semi-cured model 5 into close contact with the model 2.
- the semi-cured model 5 can be brought into close contact with the model 2 and fixed. As a result, it is possible to prevent the semi-cured model 5 from floating from the model 2.
- the vacuum packaging device 13 further includes an adjusting unit 16 that adjusts the degree of vacuum of the portion covered with the film 6 to 40% or more and 95% or less.
- the adjusting unit 16 adjusts the degree of vacuum of the portion covered with the film 6 to 50% or more and 90% or less. More preferably, the adjusting unit 16 adjusts the degree of vacuum of the portion covered with the film 6 to 60% or more and 70% or less. With such a configuration, the degree of vacuum can be adjusted and the suitability of the model 3 in the final cured state with respect to the model 2 can be adjusted.
- the manufacturing device 1 of the prosthetic device 4 includes a manufacturing device 10 of the modeled body 3 and a casting device 20 for manufacturing the prosthetic device 4 of the metal casting floor using the modeled body 3 has been described.
- the method of manufacturing the prosthetic device 4 includes, but is not limited to, a method of manufacturing the model 3 and a method of manufacturing the prosthesis device for the metal casting floor using the model 3.
- the manufacturing device 1 of the prosthetic device 4 may not include the casting device 20 but may include the manufacturing device 10.
- the method for manufacturing the prosthetic device 4 does not include a method for manufacturing the prosthetic device 4 for the metal casting floor using the model body 3, but may include a method for producing the model body 3.
- the modeling body 3 itself produced by the manufacturing device 10 and the manufacturing method of the modeling body 3 may be used as the prosthetic device 4.
- FIGS. 10-12 are schematic views showing another example of the prosthetic device 4A-4C according to the first embodiment of the present invention.
- the examples shown in FIGS. 10 to 12 show a state in which the prosthetic device 4A-4C is attached to the model 2A-2C, respectively.
- the prosthetic device 4A shown in FIG. 10 is a crown.
- the prosthetic device 4B shown in FIG. 11 is a resin floor.
- the prosthetic device 4C shown in FIG. 12 is a straightening sprint.
- the prosthetic devices 4A-4C shown in FIGS. 10-12 are manufactured by the manufacturing methods of the manufacturing device 10 and the modeled body 3, respectively. That is, in the prosthetic device 4A-4C, the model 3 in the final cured state produced by the production device 10 and the method for producing the model 3 is used as it is as the prosthesis device.
- the modeling body 3 produced by the manufacturing apparatus 10 and the manufacturing method of the modeling body 3 is any one of a crown, a bridge, a resin floor, and a straightening sprint, and these modeling bodies 3 are prosthetic devices. It may be used as 4A-4C. Even with such a configuration, the compatibility of the prosthetic device 4A-4C with the model 2 and the patient's oral cavity can be improved.
- the modeling data creating device 11, the stereolithography device 12, the vacuum packaging device 13, and the light irradiation device 14 are separate devices in the manufacturing device 10
- the present invention is not limited thereto. ..
- a plurality of devices may be integrally formed as one device.
- the modeling data creation device 11 and the stereolithography device 12 may be integrally formed as one device.
- the vacuum packaging device 13 and the light irradiation device 14 may be integrally formed as one device.
- the scanning device 21 may be included in the components of the manufacturing device 1.
- the manufacturing device 1 may include a model manufacturing device that captures an impression of the patient's oral cavity and manufactures the model 2.
- the manufacturing apparatus 1 may be provided with a covering apparatus capable of bringing the modeled body 5 into close contact with the model 2 by the film 6.
- the covering device is a crimping device that applies pressure to the model 2 to bring the model 5 into close contact with the model 2, or seals the model 5 with the film 6 in close contact with the model 2. It may be a sealing device or the like.
- the vacuum packaging device 13 includes an adjusting unit 16 for adjusting the degree of vacuum has been described, but the present invention is not limited to this.
- the vacuum packaging device 13 does not have to include the adjusting unit 16.
- the manufacturing apparatus 1 includes the light irradiation apparatus 14 as the curing apparatus
- the curing device is not limited to the light irradiation device 14.
- the manufacturing apparatus 1 may include a curing apparatus that cures the model 5 in a state where the model 5 is in close contact with the model 2.
- the curing device may be a heating device that heats the model 5 in close contact with the model 2.
- the examples shown in FIGS. 3 and 9 have been described as the shapes of the modeling body 3 and the prosthetic device 4, but the present invention is not limited to this.
- the shape of the modeling body 3 and the prosthetic device 4 can be any shape depending on the patient's case and the shape in the oral cavity.
- the method of creating the model 3 may be used as a post-cure method of the model.
- the post-cure method comprises at least steps ST3 to ST6 of FIG.
- the curing step of step ST6 may be a step of curing the semi-cured model 5 with the semi-cured model 5 in close contact with the model 2.
- the curing step of step ST6 may be a heating step of heating the semi-cured model 5 with the semi-cured model 5 in close contact with the model 2.
- the curing step may include one or more steps of curing the modeled body.
- the curing step may include at least one of a first curing step by light irradiation (light irradiation step) and a second curing step by heating (heating step).
- the model formed by the stereolithography device 12 is referred to as a semi-cured model 5, and the model cured by the light irradiation device 14 is referred to as a final cured model 3.
- the term indicating the cured state of the modeled body may be arbitrarily determined.
- the semi-cured model 5 may be referred to as a first-cured model 5
- the final-cured model 3 may be referred to as a second-cured model 3.
- the second cured state means a state in which it is more cured than the first cured state.
- the scanning device 21 acquires the scan data of the model 2 that reproduces the oral cavity of the patient
- the present invention is not limited to this.
- the scanning device 21 may directly scan the oral cavity of the patient and acquire the scan data in the oral cavity.
- the modeling data creating device 11 may acquire scan data in the oral cavity of the patient and create modeling data of the dental modeling body 3 based on the scanning data.
- the model 3 is any one of a crown, a bridge, a resin floor, and a straightening sprint has been described, but the present invention is not limited to this.
- the model 3 may be a resin denture.
- the resin denture means a denture in which a plurality of artificial teeth are adhered to a resin denture which is a denture base.
- the prosthetic device 4 is a metal casting floor
- the present invention is not limited to this.
- the prosthetic device 4 may be a denture.
- Example The manufacturing apparatus and manufacturing method of the prosthetic device 4 will be further described based on the examples, but the present invention is not limited by the examples shown below.
- the modeling body 3 produced by the manufacturing apparatus 10 and the manufacturing method of the model 3 was evaluated.
- a DLP type D30 manufactured by Rapidhape
- an SLA type DIGITAL WAX 020D manufactured by DWS
- Standard bag with magic cut Hiryu N-5NP manufactured by Asahi Kasei Pax, material: nylon, polyethylene
- Evaluation samples of Examples 1-18 and Comparative Example 1-4 were prepared by the following procedure.
- the model 3 was produced as a conformity evaluation sample using the production device 10 of the first embodiment.
- the modeling data creation device 11 created modeling data of the dental modeling body 3 according to the model 2.
- the stereolithography device 12 produced a semi-cured model 5 according to the instruction manual or the conditions initially set for each material.
- the semi-cured model 5 was ultrasonically cleaned in ethanol for 5 minutes, the support was removed, and the model 2 was attached to the model 2.
- the semi-cured model 5 and the model 2 are covered with the film 6, and the air in the portion covered with the film 6 is exhausted by the vacuum packaging device 13 to bring the semi-cured model 5 and the model 2 into close contact with each other. It was.
- the semi-cured model 5 and the model 2 were kept in close contact with each other and irradiated with light (post-cure) for 15 minutes by the light irradiating device 14.
- the model 2 for the metal casting floor shown in FIG. 2 was used to design the dental model 3.
- the model 3A shown in FIG. 14 was designed using the model 2D of the three bridges shown in FIG.
- the model 2B of the resin floor (all floors) shown in FIG. 15 was used to design the model 3B shown in FIG.
- the model 3 was attached to the model 2 shown in FIG. 2, and the gaps between the major connector, the clasp, and the rest were measured.
- a die-free model manufactured by Daikin Industries, Ltd.
- the measurement location was chemically polymerized using a resin cement (Regisem (manufactured by Matsukaze Co., Ltd.)) to measure the thickness of the resin cement. The measurement was performed twice, and the average value was used.
- the major connector, clasp, and rest are all 500 ⁇ m or less, and the more optimal one is clinically optimal if it is 100 ⁇ m or less.
- the model 3A was attached to the model 2D shown in FIG. 13, the conformity of the margin portion of the model 3A was evaluated, and those having a thickness of 100 ⁇ m or less were clinically acceptable. Optimal is 50 ⁇ m or less.
- the model 3B was attached to the model 2B shown in FIG. 15, and the gap between the model 3B and the model 2B was measured.
- a fine checker manufactured by Shofu Inc.
- the gap is clinically acceptable to be 500 ⁇ m or less, more preferably 100 ⁇ m or less.
- Example 1-18 the vacuum packaging device 13 is used to adjust the degree of vacuum.
- Comparative Example 1-2 does not use the vacuum packaging device 13.
- the gap in Example 1-18 was 500 ⁇ m or less in all of the major connector, clasp and rest.
- the gap in Comparative Example 1-2 was in the range of 600 ⁇ m or more and 800 ⁇ m or less in all of the major connector, clasp and rest. As described above, in Example 1-18, the gap is smaller than that in Comparative Example 1-2. Further, the gap of Example 1-18 is within the clinically acceptable range, but the gap of Comparative Example 1-2 is beyond the clinically acceptable range.
- Example 1-8 Focus on Example 1-8. As shown in Tables 1 and 2, in Examples 1-8, other conditions are common except for the degree of vacuum.
- the gap is small in the range where the degree of vacuum is 40% or more and 95% or less. Further, in the range where the degree of vacuum is 50% or more and 90% or less, the gap becomes smaller. In the range where the degree of vacuum is 60% or more and 70% or less, the gap is the smallest. In Examples 6-8, the high degree of vacuum caused deformation and increased the gap. From these results, the degree of vacuum is preferably 40% or more and 95% or less. More preferably, the degree of vacuum is 50% or more and 90% or less. More preferably, the degree of vacuum is 60% or more and 70% or less.
- Example 5 and Example 9-16 Focus on Example 5 and Example 9-16. As shown in Table 2-4, in Examples 5 and 9-16, other conditions are common except for the polymerization rate of the semi-cured model.
- the gap is small in the range of the polymerization rate of 50% or more and 98% or less. Further, in the range where the polymerization rate is 60% or more and 95% or less, the gap becomes smaller. The gap is the smallest in the range where the polymerization rate is 70% or more and 90% or less. From these results, the polymerization rate of the semi-cured model is preferably 50% or more and 98% or less. More preferably, the polymerization rate is 60% or more and 95% or less. More preferably, the polymerization rate is 70% or more and 90% or less.
- Examples 2 and 5 and Examples 17 and 18 differ in the type of the stereolithography apparatus 12 and the material of the stereolithography body 3.
- a DLP-type stereolithography apparatus D30
- the material of the model 3 is Cast.
- the SLA stereolithography apparatus DIGITAL WAX 020D
- the degree of vacuum of Example 5 and Example 17 is 70%
- the degree of vacuum of Example 2 and Example 18 is 40%.
- the DLP method is a modeling method with lower accuracy than the SLA method, but looking at the evaluation results of Examples 2, 5, 17 and 18, the DLP method can also suppress the gap to the same level as the SLA method. You can see that there is.
- Examples 19-20 and Comparative Example 3 relating to the three-bridge model 2D and the model 3A.
- the vacuum packaging device 13 is used to adjust the degree of vacuum.
- Comparative Example 3 does not use the vacuum packaging device 13.
- the margin gap in Examples 19-20 is smaller than that in Comparative Example 3.
- the gaps in Examples 19-20 are within the clinically acceptable range, while the gaps in Comparative Example 3 are beyond the clinically acceptable range.
- Example 19 having a vacuum degree of 50% when comparing Example 19 having a vacuum degree of 50% and Example 20 having a vacuum degree of 70%, the margin gap is smaller in Example 20. From this, from the viewpoint of making the gap smaller, the degree of vacuum is preferably close to 70%.
- Examples 21-22 and Comparative Example 4 relating to the resin floor model 2B and the model 3B.
- the vacuum packaging device 13 is used to adjust the degree of vacuum.
- Comparative Example 4 does not use the vacuum packaging device 13.
- the gap in the central part of the palate in Examples 21-22 is smaller than that in Comparative Example 4.
- the gaps in Examples 21-22 are within the clinically acceptable range, while the gaps in Comparative Example 4 are beyond the clinically acceptable range.
- Example 21 having a vacuum degree of 50% and Example 22 having a vacuum degree of 70%
- the gap in the central part of the palate is smaller in Example 22. From this, from the viewpoint of making the gap smaller, the degree of vacuum is preferably close to 70%.
- Example 1-22 the gap between the model and the modeled body can be made smaller than that in Comparative Example 1-4. Moreover, while the evaluation results of Examples 1-22 are within the clinically acceptable range, the evaluation results of Comparative Examples 1-4 are beyond the clinically acceptable range.
- the second embodiment mainly describes the differences from the first embodiment.
- the same or equivalent configurations as those in the first embodiment will be described with the same reference numerals. Further, in the second embodiment, the description overlapping with the first embodiment is omitted.
- FIG. 16 is a block diagram showing an example of the manufacturing apparatus 1A of the prosthetic apparatus 4 according to the second embodiment of the present invention.
- the second embodiment is different from the first embodiment in that the manufacturing device 10A of the manufacturing device 1A includes a constant stabilizer (heating device) 17.
- the compatibility of the model in the final cured state is improved immediately after the removal.
- the modeled body in the final cured state may be deformed with time after the film 6 is removed, and the compatibility may be lowered.
- the modeled body in the final cured state tends to change over time. Therefore, if the wax-up process and the burying process are not performed immediately after removing the film, the produced prosthesis device floats from the model. It may become incompatible and may not fit.
- the modeled body after light irradiation is heated by the constant stabilizer (heating device) 17 in order to suppress the deterioration of the suitability of the modeled body 3 in the final cured state.
- a modeled body in a constant stable state is obtained.
- the semi-cured model 5 produced by the optical modeling device 12 is referred to as a first-cured model
- the model cured by the light irradiation device 14 is referred to as a second-cured model
- the modeled body heated by the constant stabilizer 17 is referred to as a modeled body in a third cured state.
- the second cured state means a state in which it is more cured than the first cured state.
- the third cured state means a state in which it is more cured than the second cured state.
- the manufacturing device 10A of the manufacturing device 1A includes a constant stabilizer 17 in addition to the configuration of the first embodiment.
- the modeling data creation device 11, the stereolithography device 12, the vacuum packaging device 13, the light irradiation device 14, and the constant stabilization device 17 are arranged in this order from upstream to downstream. ..
- the constant stabilizer 17 heats the modeled body in the second cured state cured by the light irradiation device 14 in a state of being in close contact with the model 2.
- the modeled body 3 in the second cured state is further cured to obtain the modeled body 3 in the third cured state, whereby the modeled body 3 in the constant stable state is obtained.
- the constant stabilizer 17 is arranged downstream of the light irradiation device 14.
- the constant stabilization device 17 heats the modeled body in the second cured state produced by the light irradiation device 14 in a state of being in close contact with the model 2.
- the constant stabilizer 17 may be, for example, a heating device that can be heated and the temperature can be adjusted.
- the constant stabilizer 17 will be referred to as a heating device 17.
- the heating device 17 include a heater.
- the heating temperature by the heating device 17 is 50 ° C. or higher and 130 ° C. or lower.
- the heating temperature is 65 ° C. or higher and 115 ° C. or lower.
- the heating temperature is 80 ° C. or higher and 100 ° C. or lower.
- the constant-stable model 3 is not sufficiently stabilized, and it is difficult to obtain the constant-stable model 3 with little change over time.
- the heating temperature is higher than 130 ° C.
- the mooring time during heating is preferably continued until the model 3 in a constant stable state can be obtained. Specifically, it is preferably 3 minutes or more and 60 minutes or less.
- the heating may be carried out by gradually raising the temperature from room temperature, or by putting it into an environment set in the above numerical range.
- the heating temperature and heating time in the heating device 17 can be appropriately adjusted according to the shape and required dimensions of the model 3 in a constant stable state.
- the heating device 17 is not limited to this, and it is preferable to immerse the heating device 17 in warm water (50 ° C. to 100 ° C.).
- a thermal polymerization initiator may be contained as a material for forming the modeled body 3.
- the thermal polymerization initiator include benzoyl peroxide, parachlorobenzoyl peroxide, 2,4-dichlorobenzoyl peroxide, acetyl peroxide, lauroyl peroxide, tertiary butyl peroxide, cumene hydroperoxide, 2,5.
- -Organic peroxides such as dimethylhexane, 2,5-dihydroperoxide, methylethylketone peroxide, tertiary butylperoxybenzoade, and azo compounds such as azobisisobutyronitrile, methyl azobisisobutyrate, and azobiscyanovaleric acid. Is preferably used. Among these, in the present invention, it is preferable to select and use benzoyl peroxide, azobisisobutyronitrile, trimethylbarbituric acid, and tributylborane oxide.
- the heating device 17 heats the model 2 in the second cured state and the model 2 in a state of being covered with the film 6. Therefore, the film 6 is made of a heat-resistant material.
- the film 6 may be made of a material that can withstand the heating temperature described above.
- heat-resistant materials include nylon, polyethylene, polystyrene, polyimide, and fluororesin.
- FIG. 17 is a flowchart showing an example of a method for manufacturing a modeled body according to the second embodiment of the present invention. Since steps ST1 to ST6 of the manufacturing method of the second embodiment shown in FIG. 17 are the same as steps ST1 to ST6 of the manufacturing method of the first embodiment shown in FIG. 6, detailed description thereof will be omitted.
- a modeled body in a second cured state is obtained. Specifically, by carrying out steps ST1 to ST3, the modeled body 5 in the first cured state is produced. By carrying out steps ST4 to ST6, a modeled body in a second cured state is produced. The modeled body in the second cured state is in a state of being covered with the model 2 by the film 6. Therefore, the modeled body in the second cured state is in close contact with the model 2.
- Step ST7 is a constant stabilization step (heating step) for stabilizing the modeled body by heating the modeled body in the second cured state in close contact with the model 2.
- the heating device 17 heats the model 2 in the second cured state in a state of being in close contact with the model 2.
- the heating by the heating device 17 stabilizes the modeled body in the second cured state.
- the modeled body in the second cured state is further cured, and the modeled body 3 in the third cured state is obtained, which is harder than the modeled body in the second cured state.
- the constant stabilization step may be referred to as a heating step.
- the constant-stable model 3 can be manufactured by performing steps ST1 to ST7 shown in FIG.
- the manufacturing device 10A further includes a heating device 17 that heats the modeled body in the second cured state cured by the light irradiation device 14 in a state of being in close contact with the model 2.
- the third cured model obtained by further curing the second cured model 5 can be brought into a constant stable state, and changes in the model 3 over time can be suppressed. ..
- the model 3 is in a constant stable state. Therefore, the oral cavity of the patient of the metal casting bed prosthesis device 4 produced by the casting device 20. The compatibility with the inside can be improved.
- the manufacturing method of the prosthetic device 4 in the second embodiment further includes a constant stabilization step (heating step) ST7 in which the modeled body in the second cured state cured by the light irradiation step ST6 is heated in a state of being in close contact with the model 2.
- a constant stabilization step heating step
- ST7 constant stabilization step in which the modeled body in the second cured state cured by the light irradiation step ST6 is heated in a state of being in close contact with the model 2.
- the modeled body 3 in the third cured state can be produced by curing the modeled body in the second cured state.
- the modeled body 3 in the third cured state is in a constant stable state, and therefore, changes over time can be suppressed.
- the prosthetic device 4 according to the second embodiment is further manufactured by the model 3 in a constant stable state, which is stabilized by heating the model 2 in the second cured state in a state of being in close contact with the model 2.
- Such a configuration improves the patient's oral compatibility.
- the modeling data creation device 11, the stereolithography device 12, the vacuum packaging device 13, the light irradiation device 14, and the heating device 17 are separate devices in the production device 10A.
- a plurality of devices may be integrally formed as one device.
- the light irradiation device 14 and the heating device 17 may be integrally formed as one device.
- step ST7 is referred to as a constant stabilization step or a heating step, but steps ST6 and ST7 may be collectively referred to as a curing step. That is, the curing steps include a first curing step (light irradiation step) in which the model 5 in the first cured state is in close contact with the model 2 and light is irradiated, and the model 2 in the second cured state is in close contact with the model 2. It may have a second curing step (heating step) of heating in a state of being made.
- first curing step light irradiation step
- the model 2 in the second cured state is in close contact with the model 2.
- It may have a second curing step (heating step) of heating in a state of being made.
- the first curing step is step ST6, and the model 5 in the first cured state is cured by light irradiation by the light irradiation device 14, to obtain a model in the second cured state.
- the second curing step is step ST7, in which the modeled body in the second cured state is cured by heating by the heating device 17, and the modeled body in the third cured state is obtained.
- the third embodiment mainly describes the differences from the second embodiment.
- the same or equivalent configurations as those in the second embodiment will be described with the same reference numerals. Further, in the third embodiment, the description overlapping with the second embodiment is omitted.
- FIG. 18 is a block diagram showing an example of the manufacturing apparatus 1B of the prosthetic apparatus 4 according to the third embodiment of the present invention.
- the third embodiment is different from the second embodiment in that the light irradiation device 14 is arranged upstream of the vacuum packaging device 13. Further, in the third embodiment, the model 5 in the first cured state is cured by light irradiation without being covered with the film 6, to produce the model in the second cured state, and the model and the model in the second cured state. It differs from the second embodiment in that 2 and 2 are covered with the film 6 and that the cured model is brought into close contact with the model 2.
- the light irradiation device 14 is arranged upstream of the vacuum packaging device 13. That is, in the manufacturing device 10B, the modeling data creating device 11, the optical modeling device 12, the light irradiation device 14, the vacuum packaging device 13, and the constant stabilization device 17 are arranged in this order from upstream to downstream.
- the constant stabilizer 17 is referred to as a heating device 17.
- the semi-cured model 5 produced by the optical modeling device 12 is referred to as a first-cured model
- the model cured by the light irradiation device 14 is referred to as a second-cured model.
- the model body heated by the (heating device) 17 is referred to as a model body in the third cured state.
- the second cured state means a state in which it is more cured than the first cured state.
- the third cured state means a state in which it is more cured than the second cured state.
- the light irradiation device 14 cures the first-cured model 5 by irradiating the semi-cured model 5, that is, the first-cured model 5, and the second-cured model 5. Get the body.
- the light irradiation device 14 irradiates the modeled body 5 in the first cured state, which is not covered with the film 6, with light.
- the second cured state is a state in which it is cured to such an extent that it can be deformed by applying force.
- the vacuum packaging device 13 covers at least a part of the second cured model and the model 2 with the film 6. Further, the exhaust portion 15 of the vacuum packaging device 13 deforms the film 6 by exhausting the air in the portion covered with the film 6, so that the model 2 in the second cured state is brought into close contact with the model 2.
- FIG. 19 is a flowchart showing an example of a method for manufacturing the model 3 according to the third embodiment of the present invention. Since steps ST1 to ST3 and ST7 of the manufacturing method of the third embodiment shown in FIG. 19 are the same as steps ST1 to ST3 and ST7 of the manufacturing method of the second embodiment shown in FIG. 17, the description thereof will be omitted. .. Further, in the manufacturing method of the third embodiment, steps ST24 to ST26 are carried out instead of steps ST4 to ST6 of the manufacturing method of the second embodiment.
- Step ST24 is a first curing step (light irradiation step) in which the first cured model 5 is cured by irradiating the first cured model 5 with light to obtain a second cured model 5.
- the light irradiating device 14 irradiates the modeled body 5 in the first cured state, which is not covered with the film 6, with light.
- the light emitted from the light irradiating device 14 cures the modeled body 5 in the first cured state, and is, for example, ultraviolet light.
- the model 5 in the first cured state is cured to obtain the model in the second cured state.
- Step ST25 is a coating step in which the second cured model is attached to the model 2 and at least a part of the second cured model and the model 2 is covered with the film 6.
- the vacuum packaging device 13 covers at least a part of the model 2 in the second cured state with the film 6.
- Step ST26 is an exhaust step in which the film 6 is deformed by exhausting the air in the portion covered with the film 6, and the model 2 in the second cured state is brought into close contact with the model 2.
- the exhaust portion 15 of the vacuum packaging device 13 exhausts the air in the portion covered by the film 6.
- the inside of the film 6 is made negative pressure, the film 6 is deformed, and the model 2 in the second cured state is pressed against the model 2 by the film 6.
- the modeled body in the second cured state is in close contact with the model 2.
- step ST25 an example in which the vacuum packaging device 13 covers the model 2 in the second cured state and the model 2 with the film 6 has been described, but the present invention is not limited to this.
- the model 2 in the second cured state and the model 2 may be covered with the film 6 by a device separate from the vacuum packaging device 13.
- the method of covering the model 2 in the second cured state with the film 6 may be performed by any method or any device.
- Step ST7 is a second curing step of curing the second cured model by heating the model 2 in the second cured state in close contact with the model 2, as in the second embodiment.
- the second curing step is a heating step (constant stabilization step) for heating the modeled object in the second cured state.
- the heating device 17 heats the model 2 in the second cured state in a state of being in close contact with the model 2.
- the heating by the heating device 17 stabilizes the modeled body in the second cured state.
- the third cured state is a state in which it is more cured than the second cured state.
- the modeled body 3 in a constant stable state can be manufactured by carrying out steps ST1 to ST7 shown in FIG.
- the light irradiation device 14 irradiates the modeled body 5 in the first cured state with light without covering the modeled body 5 in the first cured state with the film 6.
- the model 5 in the first cured state is cured to obtain the model in the second cured state.
- the second cured state is a state in which it is more cured than the first cured state.
- the vacuum packaging device 13 deforms the film 6 by exhausting the air in the portion covered with the film 6, and brings the modeled body in the second cured state into close contact with the model 2. Even in such a configuration, the modeled body 3 can be kept in a constant stable state, and changes over time of the modeled body 3 can be suppressed.
- the model 3 is in a constant stable state. Therefore, the oral cavity of the patient of the metal casting bed prosthesis device 4 produced by the casting device 20. The compatibility with the inside can be improved.
- the manufacturing method of the modeled body 3 in the manufacturing method of the prosthetic device 4 is as follows: acquisition step ST1, modeling data creation process ST2, modeling body manufacturing process ST3, light irradiation process ST24, coating process ST25, exhaust process ST26 and The heating step ST7 is included.
- the acquisition step ST1 acquires scan data of the model 2 that reproduces at least a part of the patient's oral cavity.
- the modeling data creation step ST2 creates modeling data of a dental model based on the scan data.
- the modeled body manufacturing step ST3 manufactures the modeled body 5 in the first cured state based on the modeling data.
- the first cured model 5 is irradiated with light to cure the first cured model 5 to obtain a second cured model 5.
- the model 2 in the second cured state is attached to the model 2, and at least a part of the model 2 in the second cured state and the model 2 is covered with the film 6.
- the film 6 is deformed by exhausting the air in the portion covered with the film 6, and the model 2 in the second cured state is brought into close contact with the model 2.
- the model 3 in the third cured state is obtained by heating the model in the second cured state in close contact with the model 2.
- the modeled body 3 can be kept in a constant stable state, and changes in the modeled body 3 over time can be suppressed.
- the model 3 is in a constant stable state. Therefore, the oral cavity of the patient of the metal casting bed prosthesis device 4 produced by the casting device 20. The compatibility with the inside can be improved.
- the modeling data creation device 11, the stereolithography device 12, the vacuum packaging device 13, the light irradiation device 14, and the heating device 17 are separate devices in the production device 10B.
- a plurality of devices may be integrally formed as one device.
- the stereolithography device 12 and the light irradiation device 14 may be integrally formed as one device.
- step ST24 is referred to as a first curing step or a light irradiation step, but step ST3 and step ST24 may be collectively referred to as a model manufacturing step. That is, in the modeling body manufacturing step, the first curing is performed by producing the modeled body 5 in the first cured state based on the modeled data (step ST3) and by irradiating the modeled body 5 in the first cured state with light. It may have (step ST24) to produce the modeled body in the second cured state which is hardened from the state.
- Example The manufacturing apparatus and manufacturing method of the prosthetic device 4 will be further described based on the examples, but the present invention is not limited by the examples shown below.
- the devices 10A and 10B for producing the constant-stable model 3 and the constant-stable model 3 produced by the production method were evaluated.
- Standard bag with magic cut Hiryu N-5NP manufactured by Asahi Kasei Pax, material: nylon, polyethylene
- Examples 23-46 and Comparative Example 5-7 were prepared by the following procedure.
- Examples 47-49 are based on Embodiment 1.
- the model 3 in a constant stable state was produced as a conformity evaluation sample using the production device 10.
- the modeling data creation device 11 created modeling data of the dental modeling body 3 according to the model 2.
- the stereolithography device 12 produced a semi-cured model 5 according to the instruction manual or the conditions initially set for each material. After the molding was completed, the semi-cured model 5 was ultrasonically cleaned in ethanol for 5 minutes, and then the support was removed.
- the semi-cured model 5 was attached to the model 2. After that, the semi-cured model 5 and the model 2 are covered with the film 6, and the air in the portion covered with the film 6 is exhausted by the vacuum packaging device 13 to bring the semi-cured model 5 and the model 2 into close contact with each other. It was. After that, while the semi-cured model 5 and the model 2 are in close contact with each other, the light irradiation device 14 irradiates (post-cure) light for 15 minutes, and then the heating device 17 heats the model 2 from room temperature to raise the heating temperature. It was maintained for 20 minutes and slowly cooled at room temperature.
- the semi-cured model 5 was irradiated with light (post-cure) for 15 minutes by the light irradiation device 14. Subsequently, the final cured model and the model 2 were covered with the film 6, and the air in the portion covered with the film 6 was exhausted by the vacuum packaging device 13 to bring the final cured model and the model 2 into close contact with each other. .. Then, while the model 2 in the final cured state was in close contact with the model 2, the model 2 was heated from room temperature by the heating device 17, the heating temperature was maintained for 20 minutes, and the model 2 was slowly cooled at room temperature.
- the model 2 for the metal casting floor shown in FIG. 2 was used to design the dental model 3.
- the model 3A shown in FIG. 14 was designed using the model 2D of the three bridges shown in FIG.
- the model 2B of the resin floor (all floors) shown in FIG. 15 was used to design the model 3B shown in FIG.
- the constant-stable model 3 for the metal casting floor
- the constant-stable model 3 was attached to the model 2 shown in FIG. 3, and the gaps between the major connector, the clasp, and the rest were measured.
- a die-free model manufactured by Daikin Industries, Ltd.
- the measurement location was chemically polymerized using resin cement (Regisem (manufactured by Matsukaze Co., Ltd.)) to measure the thickness of the resin cement. Measurements were taken 10 minutes and 24 hours after the slow cooling was completed and the film was removed. The measurement was performed twice, and the average value was used.
- the major connector, clasp, and rest are all 500 ⁇ m or less, and the more optimal one is clinically optimal if it is 100 ⁇ m or less.
- the modeled body 3A was attached to the model 2D shown in FIG. 13, the conformity of the margin portion of the modeled body 3A was evaluated, and those having a thickness of 100 ⁇ m or less were clinically acceptable. Optimal is 50 ⁇ m or less.
- the model 3B was attached to the model 2B shown in FIG. 15, and the gap between the model 3B and the model 2B was measured.
- a fine checker manufactured by Shofu Inc.
- the gap is clinically acceptable to be 500 ⁇ m or less, more preferably 100 ⁇ m or less.
- the evaluation results are shown in Table 10-19 below.
- the results of the second embodiment are shown in Tables 10-12.
- the results of Embodiment 3 are shown in Tables 13-15.
- the results of Embodiment 1 are shown in Table 16-17.
- the results of Comparative Example 5-7 are shown in Tables 18-19.
- Examples 47, 48, and 49 are the same as Examples 5, 20, and 22 of the first embodiment, respectively.
- Examples 23-26, 35-38, 47 and Comparative Example 5 relating to the model 2 of the metal cast floor and the model 3 in the constant stability state.
- the vacuum packaging device 13 is used to adjust the degree of vacuum
- the heating device 17 is used to adjust the heating temperature.
- Example 47 does not use the heating device 17.
- Comparative Example 5 does not use the vacuum packaging device 13 and the heating device 17.
- the gap after 24 hours is smaller than that in Example 47 and Comparative Example 5. Further, the gap between Examples 23-26 and 35-38 is 100 ⁇ m or less even after 24 hours, which is clinically optimal.
- Example 27-30, 39-42, 48 and Comparative Example 6 relating to the three-bridge model 2D and the model 3A.
- the vacuum packaging device 13 is used to adjust the degree of vacuum
- the heating device 17 is used to adjust the heating temperature.
- Example 48 does not use the heating device 17.
- Comparative Example 6 does not use the vacuum packaging device 13 and the heating device 17.
- Examples 31-34, 43-46, 49 and Comparative Example 7 relating to the resin floor model 2B and the model 3B.
- the vacuum packaging device 13 is used to adjust the degree of vacuum
- the heating device 17 is used to adjust the heating temperature.
- Example 49 does not use the heating device 17.
- Comparative Example 7 does not use the vacuum packaging device 13 and the heating device 17.
- the fourth embodiment mainly describes the differences from the first to third embodiments.
- the same or equivalent configurations as those in the first to third embodiments will be described with the same reference numerals. Further, in the fourth embodiment, the description overlapping with the first to third embodiments is omitted.
- FIG. 20 is a flowchart showing an example of a method for manufacturing the model 3 according to the fourth embodiment of the present invention. As shown in FIG. 20, the method for producing the model 3 of the fourth embodiment includes steps ST31 to ST36.
- Step ST31 is an acquisition step of acquiring scan data of a model that reproduces at least a part of the patient's oral cavity. Since step ST31 is the same as step ST1 of the first to third embodiments, detailed description thereof will be omitted.
- Step ST32 is a modeling data creation step of creating modeling data of a dental model based on scan data. Since step ST32 is the same as step ST2 of the first to third embodiments, detailed description thereof will be omitted.
- Step ST33 is a model body manufacturing step of manufacturing a model body based on the model data.
- Step ST33 includes producing the modeled body 5 in the first cured state based on the modeled data by the stereolithography device 12.
- the first cured model 5 is a semi-cured model produced by the optical modeling device 12, and is cured to such an extent that it deforms when a force is applied. It should be noted that producing the modeled body 5 in the first cured state is the same as in step ST3 of the first to third embodiments.
- Step ST33 further includes producing a second-cured model that is harder than the first-cured state by irradiating the first-cured model 5 with light by the light irradiation device 14. May be good. Producing the modeled body in the second cured state is the same as in step ST24 of the third embodiment.
- Step ST34 is a coating step in which the modeled body is attached to the model 2 and at least a part of the modeled body and the model 2 is covered with the film 6.
- the modeled body in the first cured state may be covered with the film 6, or the modeled body in the second cured state may be covered with the film 6. Since step ST34 is the same as step ST4 of the first and second embodiments or step ST25 of the third embodiment, detailed description thereof will be omitted.
- Step ST35 is an exhaust step in which the film 6 is deformed by exhausting the air in the portion covered with the film 6 to bring the modeled body into close contact with the model. Since step ST35 is the same as step ST5 of embodiments 1 and 2 or step ST26 of embodiment 3, detailed description thereof will be omitted.
- Step ST36 is a curing step of curing the modeled body in a state where the modeled body is in close contact with the model 2.
- the curing step includes at least one of a light irradiation step of irradiating light with the modeled object in close contact with the model 2 and a heating step of heating the modeled object with the modeled object in close contact with the model 2.
- step ST36 when the modeled body in the first cured state is brought into close contact with the model 2, one or both of the light irradiation step and the heating step may be carried out.
- step ST36 when the model 2 in the second cured state is brought into close contact with the model 2, a heating step may be performed.
- the manufacturing method of the prosthetic device 4 includes an acquisition process ST31, a modeling data creation process ST32, a modeled body manufacturing process ST33, a coating process ST34, an exhaust process ST35, and a curing process ST36.
- the acquisition step ST31 acquires scan data of a model that reproduces at least a part of the patient's oral cavity.
- the modeling data creation step ST32 creates modeling data of a dental model based on the scan data.
- the modeled body manufacturing step ST33 manufactures a modeled body based on the modeling data.
- the coating step ST34 the modeled body is attached to the model 2, and at least a part of the modeled body and the model 2 is covered with the film 6.
- the film 6 is deformed by exhausting the air in the portion covered with the film 6, and the modeled body is brought into close contact with the model 2.
- the modeled body is cured in a state where the modeled body is in close contact with the model 2.
- the fifth embodiment mainly describes the differences from the first to fourth embodiments.
- the same or equivalent configurations as those in the first to fourth embodiments will be described with the same reference numerals. Further, in the fifth embodiment, the description overlapping with the first to fourth embodiments is omitted.
- the vacuum packaging device 13 will be described as an example of the covering device used in the first to fourth embodiments.
- FIG. 21 is a perspective view showing an example of the vacuum packaging device 13 according to the fifth embodiment of the present invention.
- FIG. 22 is another perspective view showing an example of the vacuum packaging device 13 according to the fifth embodiment of the present invention.
- FIG. 21 shows a state before the film 6 including the model 2 to which the model 5 is attached is attached to the vacuum packaging device 13.
- FIG. 22 shows a state in which the film 6 is attached to the vacuum packaging device 13 and the air in the film 6 is exhausted.
- the vacuum packaging device 13 has a cover portion 40 and a main body portion 41.
- the cover portion 40 and the main body portion 41 are formed in a plate shape having a longitudinal direction. Further, one end of the cover portion 40 in the lateral direction and one end of the main body portion 41 in the lateral direction are connected by a hinge.
- the cover portion 40 is rotatable with respect to the main body portion 41 about the hinge.
- the vacuum packaging device 13 can realize a state in which the cover portion 40 and the main body portion 41 are in contact with each other and closed, and a state in which the cover portion 40 and the main body portion 41 are separated and opened. That is, the cover portion 40 can be opened and closed by moving the cover portion 40 with respect to the main body portion 41.
- the cover portion 40 is provided with a first degassing groove 42 for degassing.
- the first degassing groove 42 extends in the longitudinal direction of the cover portion 40.
- a pad 43 for sealing is arranged around the first degassing groove 42.
- the pads 43 are arranged over the entire circumference of the first degassing groove 42.
- the cover portion 40 has a first seal heater 44.
- the first seal heater 44 deforms and seals the film 6 by heat.
- the first seal heater 44 extends in the longitudinal direction of the cover portion 40 and is arranged adjacent to the first degassing groove 42.
- the first seal heater 44 functions as a sealing portion.
- the cover portion 40 is provided with a hole 45 into which the switch 46 of the main body portion 41, which will be described later, is inserted. When the cover portion 40 is closed, the switch 46 is inserted into the hole.
- the main body 41 has a switch 46 that controls the operation of the vacuum packaging device 13.
- the switch 46 can control the start and end of air exhaust.
- the main body 41 is provided with a second degassing groove 47 for degassing.
- the second degassing groove 47 extends in the longitudinal direction of the main body 41.
- a pad 48 for sealing is arranged around the second degassing groove 47.
- the pads 48 are arranged over the entire circumference of the second degassing groove 47.
- the second degassing groove 47 is provided with a degassing port 49.
- the degassing port 49 degass the air in the closed space formed by the first degassing groove 42 and the second degassing groove 47.
- the main body 41 has a second seal heater 50.
- the second seal heater 50 deforms and seals the film 6 by heat.
- the second seal heater 50 extends in the longitudinal direction of the main body 41, and is arranged adjacent to the second degassing groove 47.
- the second seal heater 50 functions as a sealing portion.
- the main body 41 has a clip 51 for fixing the film 6.
- the main body 41 has two clips 51.
- the clip 51 fixes the film 6 by sandwiching the film 6. Specifically, the clip 51 sandwiches the film 6 so that one end of the film 6 provided with the opening 6a is arranged in the first degassing groove 42 and the second degassing groove 47.
- FIG. 23 is a block diagram showing an example of the internal configuration of the vacuum packaging device 13 according to the fifth embodiment of the present invention.
- the vacuum packaging device 13 includes an exhaust unit 15 for exhausting air and an adjusting unit 16 for adjusting the degree of vacuum.
- the exhaust unit 15 has a pump 52.
- the pump 52 is connected to the degassing port 49 and the exhaust port 53 via a pipe.
- the exhaust port 53 is provided on the outside of the main body 41, for example.
- the pump 52 takes in air from the degassing port 49 and exhausts air from the exhaust port 53.
- the pump 52 is closed formed by the first degassing groove 42 and the second degassing groove 47 from the degassing port 49. Degas the air in the space. Since one end of the film 6 provided with the opening 6a is arranged in the space, the air in the film 6 is degassed.
- the adjusting unit 16 has a vacuum sensor 54 and a control unit 55.
- the vacuum sensor 54 detects the degree of vacuum in the film 6.
- the vacuum sensor 54 is arranged in a pipe connecting the pump 52 and the degassing port 49.
- the control unit 55 controls the pump 52 based on the degree of vacuum detected by the vacuum sensor 54. Specifically, the control unit 55 controls the pump 52 so as to obtain a desired degree of vacuum. The control unit 55 preferably adjusts the degree of vacuum of the portion covered with the film 6 to 40% or more and 95% or less.
- control unit 55 controls the seal heaters 44 and 50. Specifically, the control unit 55 generates heat by the seal heaters 44 and 50 after reaching a desired degree of vacuum. As a result, the opening 6a of the film 6 can be closed.
- control unit 55 controls the operation of the vacuum packaging device 13 by turning on / off the switch 46.
- the covering device 13 is a device used for manufacturing the prosthetic device 4, and includes an exhaust unit 15 that exhausts air in the film 6 that covers at least a part of the model and the model 2.
- the exhaust unit 15 deforms the film 6 by exhausting the air in the portion covered with the film 6, and brings the modeled body into close contact with the model 2.
- the modeled body can be brought into close contact with and fixed to the model 2 by such a configuration.
- the compatibility of the model 3 with the model 2 can be improved, so that the compatibility of the prosthetic device 4 with the patient's oral cavity can be improved.
- the covering device 13 may be any device that can exhaust the air in the film 6 and bring the modeled body into close contact with the model 2.
- the covering device 13 includes the vacuum sensor 54
- the present invention is not limited to this.
- the vacuum sensor 54 is not an essential configuration.
- the sixth embodiment mainly describes the differences from the first embodiment.
- the same or equivalent configurations as those in the first embodiment will be described with the same reference numerals. Further, in the sixth embodiment, the description overlapping with the first embodiment is omitted.
- FIG. 24 is a block diagram showing an example of the manufacturing apparatus 1C of the prosthetic apparatus 4D according to the sixth embodiment of the present invention.
- FIG. 25 is a flowchart showing an example of a manufacturing method of the prosthetic device 4D according to the sixth embodiment of the present invention.
- the sixth embodiment is different from the first embodiment in that the manufacturing apparatus 1C includes the bonding apparatus 22 and the processing apparatus 23. Further, the sixth embodiment is different from the first embodiment in that the manufacturing method includes the bonding step ST47 and the processing step ST48.
- the manufacturing device 1C manufactures a denture as a prosthetic device 4D.
- the denture is, for example, an artificial tooth adhered to a denture bed such as a resin bed (see FIG. 30).
- a denture base model 3C is produced (see FIG. 28), and the ready-made artificial tooth 8 is adhered to the denture base model 3C (see FIG. 29). As a result, a denture is manufactured.
- the manufacturing apparatus 1C includes an adhesive apparatus 22 and a processing apparatus 23.
- the adhesive device 22 is a device for adhering artificial teeth to the denture base, which is a model 3C produced by the production device 10.
- the adhesive device 22 may be a dispenser that applies an adhesive that adheres the artificial tooth and the modeled body 3C.
- the adhesive device 22 may be a brush that applies an adhesive material.
- the adhesive device 22 is not limited to the dispenser and the brush.
- the adhesive device 22 may be any device that can apply an adhesive material.
- the adhesive material is not particularly limited, and a curable resin such as a photopolymerizable resin such as a material used for a 3D printer or a powder liquid type room temperature polymerization resin can be used.
- the processing device 23 is a device for processing the modeled body 3C to which artificial teeth are adhered. For example, the processing device 23 performs finishing processing by cutting the modeled body 3C to which artificial teeth are adhered. This completes the denture prosthesis device 4D.
- steps ST41 to ST46 shown in FIG. 25 are the same as steps ST1 to ST6 shown in FIG. 6 of the first embodiment, detailed description thereof will be omitted.
- step ST41 is an acquisition step of acquiring scan data of a model that reproduces at least a part of the patient's oral cavity.
- FIG. 26 is a schematic view showing an example of the model 2E.
- the model 2E shown in FIG. 26 is a model that reproduces the oral cavity of the toothless maxilla.
- the scan data of the model 2E is acquired by the scanning device 21.
- Step ST42 is a modeling data creation step of creating modeling data of a modeled body for a denture based on scan data.
- the modeling data creation device 11 creates modeling data for the denture base.
- the modeling data may include modeling data of artificial teeth in addition to the denture base.
- the modeling data of the artificial tooth for example, the data of the ready-made artificial tooth may be adopted.
- the ready-made artificial tooth is a ready-made artificial tooth whose shape is determined in advance.
- Step ST43 is a model body manufacturing step of manufacturing a model body in a semi-cured state based on the model data.
- the stereolithography apparatus 12 produces a first-cured model, that is, a semi-cured model, based on the denture base modeling data created in step ST42.
- FIG. 27 is a schematic view showing an example of the modeled body 5A in the semi-cured state.
- the example shown in FIG. 27 shows a model 5A of a denture base to which a ready-made artificial tooth is adhered.
- the semi-cured model 5A has the shape of a denture base attached to the model 2E.
- the model 5A is formed with a plurality of recesses 7 in which a plurality of artificial teeth are arranged.
- the plurality of recesses 7 have shapes corresponding to the respective shapes of the plurality of artificial teeth. Specifically, the plurality of recesses 7 are formed as recesses according to the shape of the base portion of the plurality of artificial teeth. Further, the concave portion 7 is formed with a positioning convex portion 7a to be inserted into a positioning hole provided in the base portion of the artificial tooth.
- Step ST44 is a coating step in which the model 5A is attached to the model 2E and the model 5A and the model 2E are covered with the film 6.
- FIG. 28 is a schematic view showing an example of a state in which the semi-cured model 5A is attached to the model 2E.
- the vacuum packaging device 13 covers the model 5A and the model 2E with the film 6 in a state where the model 5A formed in step ST43 is attached to the model 2E.
- Step ST45 is an exhaust step in which the film 6 is deformed by exhausting the air in the portion covered with the film 6, and the model 5A is brought into close contact with the model 2E.
- Step ST45 may include an adjustment step of adjusting the degree of vacuum of the portion covered with the film 6.
- the adjusting unit 16 of the vacuum packaging device 13 adjusts the degree of vacuum of the portion covered with the film 6 to 40% or more and 99.9% or less.
- the degree of vacuum of the portion covered with the film 6 is adjusted to 50% or more and 99.9% or less.
- the degree of vacuum of the portion covered with the film 6 is adjusted to 60% or more and 99.9% or less.
- step ST45 after the air in the portion covered with the film 6 is exhausted, the film 6 is sealed by the sealing portion of the vacuum packaging device 13. As a result, the model 5A and the model 2E are maintained in close contact with each other.
- Step ST46 is a curing step (light irradiation step) of curing the model 5A by irradiating the model 5A with light in a state of being in close contact with the model 2E.
- the light irradiation device 14 irradiates light with the semi-cured model 5A in close contact with the model 2E.
- the semi-cured model 5A is cured.
- the modeled body 3C in the final cured state is produced. That is, a second cured model 3C is produced by further curing the first cured model 5A.
- Step ST47 is an bonding step of adhering artificial teeth to the modeled body 3C.
- FIG. 29 is a schematic view showing an example of a state in which a plurality of artificial teeth 8 are adhered to the model 3C of the denture base.
- the artificial tooth 8 is a ready-made artificial tooth.
- the adhesive device 22 adheres a plurality of artificial teeth 8 to the model 3C.
- the adhesive device 22 applies an adhesive material to a plurality of recesses 7 provided in the modeled body 3C, and arranges a plurality of artificial teeth 8 in the plurality of recesses 7.
- the model 3C to which the artificial tooth is adhered is produced.
- Step ST48 finishes the modeled body 3C to which artificial teeth are adhered.
- the processing apparatus 23 performs processing such as cutting the modeled body 3C produced in step ST47. This completes the denture prosthesis device 4D.
- FIG. 30 is a schematic view showing an example of the denture prosthetic device 4D. As shown in FIG. 30, the prosthetic device 4D for the denture is completed by removing the prosthetic device 4D from the model 2E after the finishing process.
- the denture prosthesis device 4D can be manufactured by carrying out steps ST41 to ST48.
- the denture prosthesis device 4D can be manufactured by manufacturing the denture base model 3C and adhering the artificial tooth 8 to the manufactured model 3C. Further, according to the manufacturing apparatus 1C and the manufacturing method, the residual monomer can be reduced and the compatibility of the denture prosthetic apparatus 4D can be improved.
- the semi-cured denture base model 5A is cured to the final cured model 3C in a state of being in close contact with the model 2E, warpage and deformation due to shrinkage can be suppressed.
- the air in the film 6 is exhausted by the vacuum packaging device 13 with the model 5A and the model 2E covered with the film 6.
- the polymerization is carried out in a state in which oxygen, which is a polymerization inhibitor, is removed together with air, so that the polymerization can be promoted and the residual monomer can be reduced.
- the manufacturing device 1C and the manufacturing method manufacture a denture for the maxilla as the prosthetic device 4D
- the present invention is not limited to this.
- the manufacturing apparatus 1C and the manufacturing method the prosthetic device 4D may be used to manufacture a denture for the mandible.
- the artificial tooth 8 is an off-the-shelf artificial tooth
- the artificial tooth 8 may be a modeled tooth 8 rather than an off-the-shelf product.
- the artificial tooth 8 may be a modeling artificial tooth modeled by the modeling data creation device 11 and the stereolithography device 12.
- the modeling artificial tooth may be modeled by a device different from the manufacturing device 10C.
- the modeling data creation device 11 may create modeling data for the modeling artificial tooth.
- the modeling data creating device 11 may create modeling data of an artificial tooth having a shape suitable for the oral cavity of a patient.
- the stereolithography device 12 may model the modeling artificial tooth based on the modeling data of the artificial tooth created by the modeling data creating device 11. As a result, the finishing process of the artificial tooth by the processing device 23 can be omitted.
- the manufacturing method of the prosthetic device 4D may include a step of manufacturing a modeling artificial tooth. With such a configuration, the denture base and the artificial tooth can be manufactured, so that the denture prosthesis device 4D can be easily manufactured.
- a plurality of artificial teeth 8 may be connected.
- FIG. 31 is a schematic view showing an example of a connected artificial tooth 9 in which a plurality of shaped artificial teeth 8a are connected.
- FIG. 31 shows a connected artificial tooth 9 in which 6 teeth, which are front teeth, are connected.
- the anterior teeth include central incisors, lateral incisors and canines.
- a plurality of modeling artificial teeth 8a may be connected by a connecting portion 8b.
- the connecting portion 8b is formed between two adjacent modeling artificial teeth 8a.
- the connecting portion 8b is formed together when a plurality of modeling artificial teeth 8a are formed. Therefore, the plurality of modeling artificial teeth 8a and the connecting portion 8b are integrally formed. Further, the connecting portion 8b defines an arrangement of a plurality of modeling artificial teeth 8a.
- the plurality of modeling artificial teeth 8a are connected by the connecting portion 8b in an arched state.
- a connecting artificial tooth 9 By using such a connecting artificial tooth 9, a plurality of modeling artificial teeth 8a can be easily arranged and adhered to the modeling body 3C which is a denture base.
- the convex portion 7a is provided in each of the plurality of concave portions 7 of the modeled body 3C
- the present invention is not limited to this.
- the concave portion 7 of the modeled body 3C may not be provided with the convex portion 7a.
- the present invention is not limited to this.
- the plurality of recesses 7 may be changed according to the shape of the plurality of artificial teeth to be arranged.
- the plurality of recesses 7 may have a shape corresponding to the shape of the base portion of the plurality of modeling artificial teeth 8a.
- the plurality of recesses 7 may have a shape corresponding to the shape of the base portion of the connecting artificial tooth 9 in which the plurality of modeling artificial teeth 8a are connected.
- FIG. 32 is a schematic view showing another example of the modeled body of the denture base.
- FIG. 32 shows a modeled body 3D of the denture base to which the connecting artificial tooth 9 is adhered.
- the recess 7A in which the connecting artificial tooth 9 is arranged in the modeled body 3D has a shape corresponding to the shape of the base portion of the connecting artificial tooth 9.
- the recess 7A is recessed according to the shape of the base portion and the connecting portion 9b of the plurality of modeling artificial teeth 8a.
- the modeled body 3D of the denture base may have a recess 7A corresponding to the connecting artificial tooth 9.
- step ST48 which is a finishing step
- the adhesive device 22 is a device different from the manufacturing device 10 has been described, but the present invention is not limited to this.
- the bonding device 22 may be included in the manufacturing device 10.
- step ST47 which is an bonding step, is performed after producing the modeled body 3C has been described, but the present invention is not limited to this.
- FIG. 33 is a block diagram showing another example of the manufacturing apparatus 1D of the prosthetic apparatus 4D according to the sixth embodiment of the present invention.
- the manufacturing apparatus 10C may include the bonding apparatus 22.
- the adhesive apparatus 22 may adhere a plurality of artificial teeth to the semi-cured modeled body produced by the stereolithography apparatus 12.
- FIG. 34 is a flowchart showing another example of the manufacturing method of the prosthetic device according to the sixth embodiment of the present invention. Steps ST41 to ST46 and ST48 shown in FIG. 34 are the same as steps ST41 to ST46 and ST48 shown in FIG. 25. As shown in FIG. 34, step ST47A, which is an bonding step for adhering artificial teeth, may be performed after step ST43 and before step ST44.
- FIG. 35 is a schematic view showing an example of a state in which artificial teeth are adhered to a semi-cured model 5A.
- a plurality of artificial teeth 8 may be adhered to the semi-cured model 5A produced in step ST43.
- the model 3D finally produced by the production device 10C is a denture such as a resin denture. It becomes.
- the denture model 3D is finished by the processing device 23. This completes the denture prosthesis device 4D. Even in such a configuration, the residual monomer can be reduced and the compatibility of the denture prosthetic device 4D can be improved.
- the denture prosthetic device 4D may be manufactured by using any of the manufacturing methods of Embodiments 1 to 4.
- ⁇ Materials that form the model> As a material for forming a modeled body for a denture base, Base (manufactured by Nextdent, material: acrylate-based resin) was used.
- ⁇ Artificial teeth> As the artificial tooth, a ready-made artificial tooth 8 which is a ready-made product and a modeling artificial tooth 8a which is modeled by a stereolithography device were used.
- As the ready-made artificial tooth 8 Berasia SA Anteria (color tone: A3, form: ST5) and Berasia SA posteria (color tone: A3, form: S30) manufactured by Shofu Inc. were used.
- As the modeling artificial tooth 8a a modeling artificial tooth formed into a Berasia SA shape manufactured by SHOFU INC. Using C & B (manufactured by Nextdent, material: acrylate-based resin), which is a C & B material for a stereolithography apparatus, was used.
- Standard bag with magic cut Hiryu N-5NP manufactured by Asahi Kasei Pax, material: nylon, polyethylene
- Evaluation samples of Examples 50-58 and Comparative Example 8-10 were prepared by the following procedure.
- Example 50 a denture base-shaped model 3C was produced as a conformity evaluation sample using the production device 10C of the sixth embodiment.
- the model 3C was produced by carrying out steps ST41 to ST46 shown in FIG.
- the modeling data creation device 11 creates modeling data of the modeled body for the denture according to the model 2E. Based on the created modeling data, the stereolithography apparatus 12 modeled the semi-cured model 5A shown in FIG. 27 based on the instruction manual or the conditions initially set for each material.
- the semi-cured model 5A was ultrasonically washed in isopropyl alcohol. For ultrasonic cleaning, primary cleaning and secondary cleaning were performed for 5 minutes each.
- the support was removed, and as shown in FIG. 28, the semi-cured model 5A was attached to the model 2E.
- the semi-cured model 5A and the model 2E were covered with the film 6, and the air in the portion covered with the film 6 was exhausted by the vacuum packaging device 13 to bring the semi-cured model 5A and the model 2E into close contact with each other. ..
- Light irradiation post-cure was performed for 15 minutes by the light irradiation device 14 with the semi-cured model 5A and the model 2E in close contact with each other.
- the modeled body 3C irradiated with light was taken out from the film 6, and the back surface (mucosal surface) of the modeled body 3C was further irradiated with light for 15 minutes to prepare the modeled body 3C of the denture base.
- Example 51 a denture to which the ready-made artificial tooth 8 was adhered was produced by carrying out steps ST41 to ST48 shown in FIG.
- a denture base model 3C for the ready-made artificial tooth 8 was produced in the same manner as in Example 50, and the denture was produced by adhering the ready-made artificial tooth to the produced model 3C.
- a powder-liquid mixture of SHOFU INC. Provinice Co., Ltd. was applied as an adhesive to the plurality of recesses 7 of the produced model 3C.
- Berasia SA manufactured by Shofu Inc. which is a ready-made artificial tooth, was pressed into the plurality of recesses 7 and cured at room temperature to prepare a denture to which the ready-made artificial tooth 8 was adhered.
- Example 52 a denture to which the modeling artificial tooth 8a was adhered was produced by carrying out steps ST41 to ST48 shown in FIG.
- a denture base 3D for the artificial denture 8a was produced in the same manner as in Example 50, and the denture was produced by adhering the artificial denture to the produced 3D.
- the 3D printer liquid "Base (manufactured by Nextdent)" was applied to a plurality of recesses 7A of the produced modeled body 3D. Subsequently, the artificial tooth 8a was pressed against the plurality of recesses 7A and irradiated with light for 5 minutes to prepare a denture to which the artificial tooth 8a was adhered.
- Example 53 In Example 53, except that the initially set overcure value of the stereolithography apparatus 12 was changed from 100% to 80% to perform modeling, and the semi-cured model 5A shown in FIG. 27 was modeled. , A denture to which the ready-made artificial tooth 8 was adhered was produced in the same manner as in Example 51.
- the overcure value is a set value of D30 (manufactured by Rapidhape).
- the polymerization time can be changed by changing the overcure value. The larger the overcure value, the longer the polymerization time. The smaller the overcure value, the shorter the polymerization time. In Example 53, the polymerization time is shortened as compared with Example 51 by changing the overcure value from 100% to 80%.
- Example 54 In the 54th embodiment, the ready-made denture 8 is similar to the 53rd embodiment except that the initially set overcure value of the stereolithography apparatus 12 is changed from 100% to 120% for modeling. A glued denture was made. In Example 54, the polymerization time is lengthened as compared with Example 51 by changing the overcure value from 100% to 120%.
- Example 55 a denture to which the ready-made artificial tooth 8 was adhered was produced in the same manner as in Example 51 except that the degree of vacuum of the vacuum packaging device 13 was set to 50%.
- Example 56 a denture to which the ready-made artificial tooth 8 was adhered was produced in the same manner as in Example 55, except that the degree of vacuum of the vacuum packaging device 13 was set to 80%.
- Example 57 a denture to which the ready-made artificial tooth 8 was adhered was produced in the same manner as in Example 55, except that the degree of vacuum of the vacuum packaging device 13 was set to 99.9%.
- Example 58 a denture to which the ready-made artificial tooth 8 was adhered was produced by carrying out steps ST41 to ST48 shown in FIG. Specifically, the modeling data creation device 11 created modeling data of a modeled body for a denture according to the model 2E. Based on the created modeling data, the stereolithography apparatus 12 modeled the semi-cured model 5A shown in FIG. 27 based on the instruction manual or the conditions initially set for each material. The semi-cured model 5A was ultrasonically washed in isopropyl alcohol. For ultrasonic cleaning, primary cleaning and secondary cleaning were performed for 5 minutes each. A powdery liquid mixture of SHOFU INC. Provinice Co., Ltd.
- the semi-cured model 5A to which the ready-made artificial tooth 8 was adhered was attached to the model 2E.
- the semi-cured model 5A and the model 2E were covered with the film 6, and the air in the portion covered with the film 6 was exhausted by the vacuum packaging device 13 to bring the semi-cured model 5A and the model 2E into close contact with each other.
- Light irradiation post-cure was performed for 15 minutes by the light irradiation device 14 with the semi-cured model 5A and the model 2E in close contact with each other.
- the modeled body 3E irradiated with light was taken out from the film 6, and the back surface (mucosal surface) of the modeled body 3E was further irradiated with light for 15 minutes to prepare the modeled body 3E of the denture base.
- Comparative Example 8 a denture to which the ready-made artificial tooth 8 was adhered was produced in the same manner as in Example 51, except that the vacuum packaging device 13 was not used.
- Comparative Example 8 in a state where the semi-cured model 5A was attached to the model 2E, light irradiation (post-cure) was performed for 15 minutes by the light irradiation device 14 without covering with the film 6. Different from 51.
- Comparative Example 9 a denture to which the ready-made artificial tooth 8 was adhered was produced in the same manner as in Example 58, except that the vacuum packaging device 13 was not used.
- the light irradiation post-cure is performed by the light irradiation device 14 without covering with the film 6. It differs from Example 58 in that it was carried out for a minute.
- Comparative Example 10 a denture to which the modeling artificial tooth 8a was adhered was produced in the same manner as in Example 52, except that the vacuum packaging device 13 was not used.
- Comparative Example 10 in a state where the semi-cured model 5A was attached to the model 2E, light irradiation (post-cure) was performed for 15 minutes by the light irradiation device 14 without covering with the film 6. Different from 52.
- the polymerization rate evaluation sample and the residual monomer extraction rate evaluation sample in the final cured state had the same shape and were prepared by the following method.
- the back surface of the round plate (the surface not directly irradiated with light) is irradiated with light for another 15 minutes, and this is evaluated for the polymerization rate of the final cured model. Alternatively, it was used as a sample for evaluating the residual monomer extraction rate.
- PS1 indicates the peak intensity of the modeled body
- PS2 indicates the peak intensity of the resin liquid material
- Mg1 indicates the amount of extraction (g)
- Mg2 indicates the weight of the modeled body (g).
- Example 51 and Comparative Example 8 Example 58 and Comparative Example 9, and Example 52 and Comparative Example 10 differ only in whether or not a vacuum device is used.
- the gap in the central part of the palate is within the clinically preferable range, whereas Comparative Examples 1, 2, and 3 exceed the clinically acceptable range. ing.
- Example 50 which is a denture base before adhering an artificial tooth
- Example 51 which is a denture to which a ready-made artificial tooth is adhered
- Example 52 which is an artificial tooth to which a modeling artificial tooth is adhered
- Example 51 Focusing on Example 51 and Example 58, the order of the steps of adhering the artificial tooth is compared.
- Example 51 in which the artificial tooth was adhered after the post-cure of the denture base
- Example 58 in which the artificial tooth was adhered to the denture base before the post-cure and then the post-cure was performed, there was a gap in the central part of the palate. It is comparable and is within the clinically more favorable range.
- Example 53 was 67%, Example 51 was 75%, and Example 54 was 80%, regardless of the polymerization rate of the semi-cured modeled product.
- the gap in the central part of the palate is comparable and within the clinically more preferred range.
- Example 55 having a vacuum degree of 50%, Example 51 having a vacuum degree of 65%, Example 55 having a vacuum degree of 80%, and Example 57 having a vacuum degree of 99.9% are all clinically more preferable. Alternatively, it is within the clinically acceptable range, but a higher degree of vacuum is more preferable because the gap in the central part of the palate is small.
- the degree of vacuum was made smaller than 40%, the amount of air discharged from the film 6 was small, and it was difficult to bring the semi-cured model 5A into close contact with the model 2E.
- Examples 50-58 and Comparative Example 8-10 Focusing on Examples 50-58 and Comparative Example 8-10, the polymerization rates of the shaped products in the final cured state are compared.
- the polymerization rate of the final-cured model of Examples 50-58 is 94 to 97%, and the polymerization rate of the final-cured model of Comparative Example 8-10 is 89 to 91%.
- the polymerization rate is improved as compared with Comparative Examples 8-10.
- Examples 50-58 and Comparative Example 8-10 Focusing on Examples 50-58 and Comparative Example 8-10, the extraction rates of the shaped objects in the final cured state are compared.
- the extraction rate of Examples 50-58 is 0.009 to 0.020%, and the extraction rate of Comparative Example 8-10 is 0.079 to 0.094%.
- the extraction rate was reduced to 1/4 or less as compared with Comparative Examples 8-10.
- the seventh embodiment mainly describes the differences from the sixth embodiment.
- the same or equivalent configurations as those in the sixth embodiment will be described with the same reference numerals. Further, in the sixth embodiment, the description overlapping with the sixth embodiment is omitted.
- FIG. 36 is a block diagram showing an example of the manufacturing apparatus 1E of the prosthetic apparatus 4E according to the seventh embodiment of the present invention.
- FIG. 37 is a flowchart showing an example of a manufacturing method of the prosthetic device 4E according to the seventh embodiment of the present invention.
- the manufacturing apparatus 1E is not provided with the adhesive device 22 for adhering the artificial tooth, and the denture model 3F is produced by producing and curing the denture model in a semi-cured state.
- the seventh embodiment is different from the first embodiment in that the manufacturing method does not include the bonding step of adhering the artificial tooth, and the model body manufacturing step ST53 prepares the modeled body of the denture in a semi-cured state.
- the modeling data creating device 11 creates modeling data of a denture in which an artificial tooth and a denture base are integrally formed.
- the stereolithography apparatus 12 forms a modeled body of a semi-cured denture based on the modeling data created by the modeling data creating device 11.
- FIG. 38 is a schematic view showing an example of a modeled body 5B of a semi-cured denture.
- the model 5B is a denture model in which the denture base model 5a and the artificial tooth model 8c are integrally formed.
- steps ST51 to ST57 shown in FIG. 37 are the same as steps ST41 to ST46 and ST48 shown in FIG. 25 of the sixth embodiment, except that a semi-cured denture model 5B is produced. A detailed description will be omitted.
- step ST51 is an acquisition step of acquiring scan data of a model that reproduces at least a part of the patient's oral cavity.
- Step ST52 is a modeling data creation step of creating modeling data of a denture model based on scan data. Specifically, in step ST52, the modeling data creation device 11 creates modeling data for a denture in which the denture base and the artificial tooth are integrated.
- Step ST53 is a model manufacturing process for producing a semi-cured denture model 5B based on the model data.
- the stereolithography apparatus 12 prepares the semi-cured denture model 5B shown in FIG. 38 based on the denture modeling data created in step ST52.
- Step ST54 is a coating step in which the model 5B is attached to the model 2E and the model 5B and the model 2E are covered with the film 6.
- Step ST55 is an exhaust step in which the film 6 is deformed by exhausting the air in the portion covered with the film 6, and the model 5B is brought into close contact with the model 2E.
- Step ST55 may include an adjusting step of adjusting the degree of vacuum of the portion covered with the film 6.
- the adjusting unit 16 of the vacuum packaging device 13 adjusts the degree of vacuum of the portion covered with the film 6 to 40% or more and 99.9% or less.
- the degree of vacuum of the portion covered with the film 6 is adjusted to 50% or more and 99.9% or less. More preferably, in the adjusting step, the degree of vacuum of the portion covered with the film 6 is adjusted to 60% or more and 99.9% or less.
- Step ST56 is a curing step (light irradiation step) of curing the model 5B by irradiating the model 5B with light in a state of being in close contact with the model 2E.
- the light irradiating device 14 irradiates the model 2E with the semi-cured denture model 5B in close contact with the model 2E.
- the semi-cured denture model 5B is cured.
- a modeled body 3F of the denture in the final cured state is produced.
- Step ST57 finishes the modeled body 3F. This completes the denture prosthesis device 4E.
- the denture prosthesis device 4E can be manufactured by carrying out steps ST51 to ST57.
- the denture prosthesis device 4E is manufactured by manufacturing the denture model 3F in which the denture base and the artificial tooth are integrated.
- the bonding device 22 and the bonding step can be omitted as compared with the sixth embodiment.
- Example 59 a denture prosthesis device 4E in which an artificial tooth and a denture base were integrated was produced as a conformity evaluation sample using the manufacturing device 1E of the seventh embodiment.
- the modeling data creation device 11 created modeling data of the modeled body of the denture according to the model 2E.
- the stereolithography device 12 was used to model the semi-cured denture model 5B shown in FIG. 38 in the semi-cured state according to the instruction manual or the conditions initially set for each material.
- the semi-cured model 5B was ultrasonically washed in isopropyl alcohol. For ultrasonic cleaning, primary cleaning and secondary cleaning were performed for 5 minutes each.
- the support was removed, and the semi-cured model 5B was attached to the model 2E.
- the semi-cured model and the model 2E were covered with the film 6, and the air in the portion covered with the film 6 was exhausted by the vacuum packaging device 13, so that the semi-cured model 5B and the model 2E were brought into close contact with each other.
- Light irradiation (post-cure) was performed for 15 minutes by the light irradiation device 14 with the semi-cured model 5B and the model 2E in close contact with each other.
- a denture was prepared by taking out the modeled body 3F irradiated with light from the film 6 and further irradiating the back surface (mucosal surface) of the modeled body 3F with light for 15 minutes.
- Example 59 The gap in the central part of the palate in Example 59 is 130 ⁇ m, which is within a clinically preferable range. Therefore, in Example 59 as well, the compatibility with the model is improved as in Examples 50-58.
- the polymerization rate of the final-cured model of Example 59 is 96%, and the polymerization rate of the final-cured model of Comparative Example 8-10 is 89 to 91%. Therefore, in Example 59 as well, the polymerization rate is improved as in Examples 50-58.
- Example 59 The extraction rate of the modeled body in the final cured state in Example 59 is 0.015%. Therefore, in Example 59, the extraction rate is reduced as in Examples 50-58.
- Example 59 As described above, in Example 59 as well as in Examples 50-58, it is possible to have excellent compatibility with the model and reduce the amount of residual monomer.
- the present invention is useful, for example, in the field of manufacturing a prosthetic device with improved compatibility.
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Abstract
Description
歯科用の補綴装置を製造する方法であって、
患者の口腔内の少なくとも一部を再現した模型のスキャンデータを取得する取得工程、
前記スキャンデータに基づいて、歯科用の造形体の造形データを作成する造形データ作成工程、
前記造形データに基づいて、造形体を作製する造形体作製工程、
前記半硬化状態の造形体を前記模型に取り付け、前記造形体と前記模型との少なくとも一部をフィルムによって覆う被覆工程、
前記フィルムで覆われた部分の空気を排気することによって、前記フィルムを変形させ、前記造形体を前記模型に対して密着させる排気工程、
前記造形体を前記模型に密着させた状態で、前記造形体を硬化させる硬化工程、
を含む。
補綴装置を製造するために用いられる被覆装置であって、
造形体と模型との少なくとも一部を覆うフィルム内の空気を排気する排気部を備え、
前記排気部は、前記フィルムで覆われた部分の空気を排気することによって、前記フィルムを変形させ、前記造形体を前記模型に対して密着させる。
患者の口腔内を再現した模型のスキャンデータに基づいて作製した造形体と前記模型とを密着させて硬化することによって歯科用の補綴装置を製造する装置であって、前記態様の被覆装置を備える。
造形体と模型との少なくとも一部をフィルムによって覆った状態で、前記フィルムで覆われた部分の空気を排気することによって、前記造形体を前記模型に対して密着させ、前記造形体を前記模型に密着させた状態で硬化させた造形体によって作製される。
3Dプリンターで作製した造形体は、ポストキュア装置で光重合する前で十分に硬化していない状態、即ち「半硬化状態」となる場合がある。この場合、半硬化状態の造形体に対して、例えば、350~500nmの波長域の光(紫外線など)を照射するポストキュア装置でポストキュアを行う。この際に積層した半硬化状態の造形体は、未重合であるため、1~5%程度の線収縮が起きる。この際に重合収縮が起きて、最終硬化状態の造形体が変形しやすいという問題がある。
歯科用の補綴装置を製造する方法であって、
患者の口腔内の少なくとも一部を再現した模型のスキャンデータを取得する取得工程、
前記スキャンデータに基づいて、歯科用の造形体の造形データを作成する造形データ作成工程、
前記造形データに基づいて、造形体を作製する造形体作製工程、
前記造形体を前記模型に取り付け、前記造形体と前記模型との少なくとも一部をフィルムによって覆う被覆工程、
前記フィルムで覆われた部分の空気を排気することによって、前記フィルムを変形させ、前記造形体を前記模型に対して密着させる排気工程、
前記造形体を前記模型に密着させた状態で、前記造形体を硬化させる硬化工程、
を含む。
前記造形体を前記模型に密着させた状態で光を照射する光照射工程と、
前記造形体を前記模型に密着させた状態で加熱する加熱工程と、
のうち少なくとも一方を有していてもよい。
前記造形データに基づいて第1硬化状態の造形体を作製すること、
前記第1硬化状態の造形体に光を照射することによって、前記第1硬化状態より硬化した第2硬化状態の造形体を作製すること、
を有し、
前記硬化工程は、前記第2硬化状態の造形体を前記模型に密着させた状態で加熱する加熱工程を有していてもよい。
前記フィルムは、波長100nm以上780nm以下の光を透過してもよい。
硬化された前記造形体を鋳造用パターンとして用いて、補綴装置製造用の鋳型を作製する鋳型作製工程、
前記鋳型に溶融金属を導入する鋳込み工程、
前記鋳型を壊して鋳物を取り出す掘り出し工程、
前記鋳物を研削材及び研磨材で調整し、補綴装置に仕上げる仕上げ工程、
を含んでもよい。
前記造形体に人工歯を接着する接着工程、
を含んでもよい。
補綴装置を製造するために用いられる被覆装置であって、
造形体と模型との少なくとも一部を覆うフィルム内の空気を排気する排気部を備え、
前記排気部は、前記フィルムで覆われた部分の空気を排気することによって、前記フィルムを変形させ、前記造形体を前記模型に対して密着させる。
患者の口腔内を再現した模型のスキャンデータに基づいて作製した造形体と前記模型とを密着させて硬化することによって歯科用の補綴装置を製造する装置であって、前記態様の被覆装置を備える。
患者の口腔内を再現した模型のスキャンデータを取得し、前記スキャンデータに基づいて、歯科用の造形体の造形データを作成する造形データ作成装置、
前記造形データに基づいて、造形体を作製する光造形装置、
前記造形体を前記模型に密着させた状態で、前記造形体を硬化させる硬化装置、
を備えていてもよい。
前記造形体を前記模型に密着させた状態で光を照射する光照射装置と、
前記造形体を前記模型に密着させた状態で加熱する加熱装置と、
のうち少なくとも一方を有していてもよい。
前記製造装置は、更に、前記第1硬化状態の造形体に光を照射することによって、前記第1硬化状態より硬化した第2硬化状態の造形体を作製する光照射装置を備え、
前記硬化装置は、前記第2硬化状態の造形体を前記模型に密着させた状態で加熱する加熱装置を有していてもよい。
歯科用の補綴装置を製造する方法であって、
歯科用の造形体を作製する造形体作製工程、
患者の口腔内の少なくとも一部を再現した模型に前記造形体を取り付け、前記造形体と前記模型との少なくとも一部をフィルムによって覆う被覆工程、
前記フィルムで覆われた部分の空気を排気することによって、前記フィルムを変形させ、前記造形体を前記模型に対して密着させる排気工程、
前記造形体を前記模型に密着させた状態で、前記造形体を硬化させる硬化工程、
を含む。
実施の形態1では、金属鋳造床パターンを有する造形体を作製し、当該造形体を用いて金属鋳造床の補綴装置を製造する例について説明する。なお、本発明に係る補綴装置の製造装置及び製造方法は、これに限定されない。
図1は、本発明に係る実施の形態1の補綴装置の製造装置1の一例を示すブロック図である。図1に示すように、補綴装置の製造装置1は、模型2に基づいて金属鋳造床パターンを有する造形体3を作製する作製装置10と、造形体3を用いて金属鋳造床の補綴装置4を作製する鋳造装置20と、を備える。なお、図1には、製造装置1の他、スキャン装置21が示されている。
図1に示すように、作製装置10は、造形データ作成装置11、光造形装置12、真空包装装置13及び光照射装置14を備える。実施の形態1では、真空包装装置13は被覆装置の一例として説明する。また、光照射装置14は硬化装置の一例として説明する。
造形データ作成装置11は、患者の口腔内を再現した模型2のスキャンデータを取得し、スキャンデータに基づいて歯科用の造形体3の造形データを作成する。
光造形装置12は、造形データに基づいて、半硬化状態の造形体を作製する。光造形装置12は、例えば、3Dプリンターである。ここで、半硬化状態の造形体とは、造形体データに基づいて作製されるものであるが、ポストキュア装置である光照射装置14で光重合する前で十分に硬化していない状態の造形体を意味する。
真空包装装置13は、半硬化状態の造形体5と模型2との少なくとも一部をフィルムによって覆った状態で、フィルム内の空気を排気する。これにより、半硬化状態の造形体5を模型2に対して密着させることができる。真空包装装置13は、造形体5と模型2との少なくとも一部をフィルム6で覆い、フィルム6で覆われた部分の空気を排気することによって、フィルム6を変形させ、造形体5を模型2に対して密着させる被覆装置である。
光照射装置14は、半硬化状態の造形体5を模型2に密着させた状態で光を照射する。これにより、半硬化状態の造形体5を硬化させ、最終硬化状態の造形体3を完成する。光照射装置14は、造形体5に光を照射することによって造形体5を硬化させる硬化装置である。光照射装置14は、半硬化状態の造形体5をポストキュア処理する。なお、最終硬化状態の造形体は、一部が硬化されていなくてもよい。最終硬化状態の造形体とは、例えば、造形体が全体として未重合モノマーが0.1~20重量%であることが好ましい。
造形体3を形成する材料は、光造形装置12のSLA方式及び/又はDLP方式で使用できるものであればよい。具体的には、造形体3を形成する材料は、(メタ)アクリレート系樹脂など光硬化性を有するものであればよく、重合収縮が少ないものが好ましい。
鋳造装置20は、作製装置10によって作製された造形体3を用いて金属鋳造床の補綴装置4を鋳造する装置である。鋳造装置20は、例えば、ロストワックス製法により鋳造を実施する設備を備えていればよい。
次に、製造装置1によって実施される補綴装置4の製造方法について説明する。実施の形態1では、補綴装置4の製造方法は、作製装置10によって作製された歯科用の造形体3を用いて、鋳造装置20によって金属鋳造床の補綴装置4を作製する。このため、補綴装置4の製造方法として、歯科用の造形体3を作製する方法と、造形体3を用いて金属鋳造床の補綴装置4を作製する方法と、を説明する。
まず、造形体3の作製方法について図6を用いて説明する。図6は、本発明に係る実施の形態1の造形体3の作製方法の一例を示すフローチャートである。なお、図6に示すステップST1~ST6は、作製装置10によって実施される。
次に、造形体3を用いて、金属鋳造床の補綴装置4を作製する方法について図7を用いて説明する。なお、図7に示すステップST11~ST15は、鋳造装置20によって実施される。
本発明に係る実施の形態1によれば、以下の効果を奏することができる。
実施例に基づき、補綴装置4の製造装置及び製造方法を更に説明するが、本発明は、以下に示す実施例により制限されない。なお、実施例においては、造形体3の作製装置10及び作製方法により作製した造形体3を評価した。
<光造形装置>
光造形装置12として、DLP方式のD30(Rapidshape製)及びSLA方式のDIGITAL WAX 020D(DWS製)を使用した。
DLP方式対応のCast(Nextdent製、材料:アクリレート系樹脂)、Base(Nextdent製、材料:アクリレート系樹脂)及びSLA方式対応のRF080 RESIN(DWS製、材料:アクリレート系樹脂)を使用した。
マジックカット付規格袋 飛竜 N-5NP(旭化成パックス製、材質:ナイロン、ポリエチレン)を使用した。
LC-3Dprint Box(Nextdent製)を使用した。
実施の形態1の作製装置10を用いて適合評価サンプルとして造形体3を作製した。具体的には、造形データ作成装置11によって、模型2に合わせて歯科用の造形体3の造形データを作成した。作製した造形データに基づき、光造形装置12によって、各材料に使用説明書もしくは初期設定されている条件により半硬化状態の造形体5を作製した。造形完了後、半硬化状態の造形体5をエタノール中で5分間超音波洗浄を行った後、サポートを取り除き、模型2に取り付けた。その後、フィルム6で半硬化状態の造形体5と模型2を覆い、真空包装装置13によって、フィルム6で覆った部分の空気を排気し、半硬化状態の造形体5と模型2とを密着させた。その後、半硬化状態の造形体5と模型2とを密着させた状態のまま、光照射装置14によって15分間、光を照射(ポストキュア)した。
適合評価サンプル作製時に取り除いたサポートの一部を重合評価サンプルとした。
適合評価用として、図2に示す金属鋳造床用の模型2を使用し、歯科用の造形体3を設計した。また、図13に示す3本ブリッジの模型2Dを用い、図14に示す造形体3Aを設計した。また、図15に示すレジン床(全部床)の模型2Bを用い、図11に示す造形体3Bを設計した。
フーリエ変換赤外分光光度計 FT-IR 6300(日本分光社製)を使用し、造形前の造形体3の樹脂材料と半硬化状態の造形体(サポートの一部)及び最終硬化状態の造形体(サポートの一部)について、6000cm-1のC=C帰属されるピーク強度を測定した。ピーク強度の減少率の割合から重合率を算出した。ただし、最終硬化状態の造形体の重合率を100%とし、半硬化状態の造形体の重合率を算出した。
本発明に係る実施の形態2の補綴装置の製造装置及び製造方法について説明する。
恒安定装置17は、光照射装置14によって硬化された第2硬化状態の造形体を模型2に密着させた状態で加熱する。これにより、第2硬化状態の造形体を更に硬化させて第3硬化状態の造形体3とすることによって、恒安定状態の造形体3を得る。実施の形態2では、恒安定装置17は、光照射装置14の下流に配置されている。恒安定装置17は、光照射装置14によって作製した第2硬化状態の造形体を、模型2に密着させた状態で加熱する。
本発明に係る実施の形態2によれば、以下の効果を奏することができる。
本発明に係る実施の形態3の補綴装置の製造装置及び製造方法について説明する。
本発明に係る実施の形態3によれば、以下の効果を奏することができる。
実施例に基づき、補綴装置4の製造装置及び製造方法を更に説明するが、本発明は、以下に示す実施例により制限されない。なお、実施例においては、恒安定状態の造形体3の作製装置10A,10B及び作製方法により作製した恒安定状態の造形体3を評価した。
<光造形装置>
光造形装置12として、DLP方式のD30(Rapidshape製)を使用した。
DLP方式対応のCast(Nextdent製、材料:アクリレート系樹脂)、Base(Nextdent製、材料:アクリレート系樹脂)を使用した。
マジックカット付規格袋 飛竜 N-5NP(旭化成パックス製、材質:ナイロン、ポリエチレン)を使用した。
LC-3DPrint Box(Nextdent製)を使用した。
PHH-101(エスペック製)を使用した。
作製装置10を用いて適合評価サンプルとして恒安定状態の造形体3を作製した。具体的には、造形データ作成装置11によって、模型2に合わせて歯科用の造形体3の造形データを作成した。作製した造形データに基づき、光造形装置12によって、各材料に使用説明書もしくは初期設定されている条件により半硬化状態の造形体5を作製した。造形完了後、半硬化状態の造形体5をエタノール中で5分間超音波洗浄を行った後、サポートを取り除いた。
適合評価用として、図2に示す金属鋳造床用の模型2を使用し、歯科用の造形体3を設計した。また、図13に示す3本ブリッジの模型2Dを用い、図14に示す造形体3Aを設計した。また、図15に示すレジン床(全部床)の模型2Bを用い、図11に示す造形体3Bを設計した。
本発明に係る実施の形態4の補綴装置の製造装置及び製造方法について説明する。
本発明に係る実施の形態4によれば、以下の効果を奏することができる。
本発明に係る実施の形態5の被覆装置について説明する。
カバー部40を閉じたとき、フィルム6は、カバー部40の第1シールヒータ44と本体部41の第2シールヒータ50とに挟まれる。これにより、フィルム6内部の空気を排気した後、フィルム6の開口6aをシールしながら、熱によりフィルム6の開口6aを閉じる。
本発明に係る実施の形態5によれば、以下の効果を奏することができる。
本発明に係る実施の形態6の補綴装置の製造装置及び製造方法について説明する。
本発明に係る実施の形態6によれば、以下の効果を奏することができる。
実施例に基づき、補綴装置4Dの製造装置1C及び製造方法を更に説明するが、本発明は、以下に示す実施例により制限されない。
<光造形装置>
光造形装置12として、DLP方式のD30(Rapidshape製)を使用した。
義歯床用の造形体を形成する材料は、Base(Nextdent製、材料:アクリレート系樹脂)を使用した。
人工歯として、既製品である既製人工歯8と、光造形装置によって造形される造形人工歯8aと、を用いた。既製人工歯8として、株式会社松風製のベラシアSAアンテリア(色調:A3、形態:ST5)、ベラシアSAポステリア(色調:A3、形態:S30)を使用した。造形人工歯8aとして、光造形装置用C&B材料であるC&B(Nextdent製、材料:アクリレート系樹脂)を用いて株式会社松風製のベラシアSA形状に造形した造形人工歯を使用した。
人工歯と義歯床の造形体とを接着する接着材は、株式会社松風製のプロビナイス(色調:3S)を使用した。
マジックカット付規格袋 飛竜 N-5NP(旭化成パックス製、材質:ナイロン、ポリエチレン)を使用した。
LC-3Dprint Box(Nextdent製)を使用した。
SUC-70(株式会社松風製)を使用した。
<実施例50>
実施例50においては、実施の形態6の作製装置10Cを用いて適合評価サンプルとして義歯床形状の造形体3Cを作製した。実施例51では、図25に示すステップST41~ST46を実施することによって造形体3Cを作製した。
実施例51においては、図25に示すステップST41~ST48を実施することによって既製人工歯8が接着された義歯を作製した。実施例51においては、実施例50と同様にして既製人工歯8用の義歯床の造形体3Cを作製し、作製した造形体3Cに既製人工歯を接着することによって義歯を作製した。具体的には、作製した造形体3Cの複数の凹部7に接着材として、株式会社松風製プロビナイスの粉液混合物を塗布した。続いて、複数の凹部7に既製品人工歯である株式会社松風製のベラシアSAを圧接し、室温で硬化させることで既製人工歯8が接着した義歯を作製した。
実施例52においては、図25に示すステップST41~ST48を実施することによって造形人工歯8aが接着された義歯を作製した。実施例52においては、実施例50と同様にして造形人工歯8a用の義歯床の造形体3Dを作製し、作製した造形体3Dに造形用人工歯を接着することによって義歯を作製した。具体的には、作製した造形体3Dの複数の凹部7Aに3Dプリンタ液「Base(Nextdent製)」を塗布した。続いて、複数の凹部7Aに造形人工歯8aを圧接し、光照射を5分間行うことで造形人工歯8aが接着した義歯を作製した。
実施例53においては、光造形装置12の初期設定されたオーバーキュア値を100%から80%に変更して造形を行い、図27に示す半硬化状態の造形体5Aを造形した点を除いて、実施例51と同様の方法で既製人工歯8が接着した義歯を作製した。なお、オーバーキュア値とは、D30(Rapidshape製)の設定値である。オーバーキュア値を変更することによって、重合の時間を変更することができる。オーバーキュア値が大きくなると、重合の時間が長くなる。オーバーキュア値が小さくなると、重合の時間が短くなる。実施例53では、オーバーキュア値を100%から80%に変更することによって、実施例51と比べて、重合時間を短くしている。
実施例54においては、光造形装置12の初期設定されたオーバーキュア値を100%から120%に変更して造形を行った点を除いて、実施例53と同様にして、既製人工歯8が接着した義歯を作製した。実施例54では、オーバーキュア値を100%から120%に変更することによって、実施例51と比べて、重合時間を長くしている。
実施例55においては、真空包装装置13の真空度を50%に設定している点を除いて、実施例51と同様の方法で既製人工歯8が接着した義歯を作製した。
実施例56においては、真空包装装置13の真空度を80%に設定している点を除いて、実施例55と同様の方法で既製人工歯8が接着した義歯を作製した。
実施例57においては、真空包装装置13の真空度を99.9%に設定している点を除いて、実施例55と同様の方法で既製人工歯8が接着した義歯を作製した。
実施例58においては、図34に示すステップST41~ST48を実施することによって既製人工歯8が接着された義歯を作製した。具体的には、造形データ作成装置11によって、模型2Eに合わせて義歯用の造形体の造形データを作成した。作成した造形データに基づいて、光造形装置12によって、各材料に使用説明書もしくは初期設定されている条件に基づいて、図27に示す半硬化状態の造形体5Aを造形した。半硬化状態の造形体5Aをイソプロピルアルコール中で超音波洗浄した。超音波洗浄は、1次洗浄、2次洗浄をそれぞれ5分間行った。半硬化状態の造形体5Aの複数の凹部7に接着材として、株式会社松風製プロビナイスの粉液混合物を塗布した。続いて、複数の凹部7に既製品人工歯である株式会社松風製のベラシアSAを圧接し、室温で硬化させることで、図35に示す既製人工歯8を接着した半硬化状態の造形体5Aを作製した。
比較例8においては、真空包装装置13を使用していない点を除いて、実施例51と同様にして既製人工歯8が接着された義歯を作製した。比較例8においては、半硬化状態の造形体5Aを模型2Eに取り付けた状態で、フィルム6によって覆わずに光照射装置14によって、光照射(ポストキュア)を15分間行った点で、実施例51と異なる。
比較例9においては、真空包装装置13を使用していない点を除いて、実施例58と同様にして既製人工歯8が接着された義歯を作製した。比較例9においては、既製人工歯8が接着された半硬化状態の造形体5Aを模型2Eに取り付けた状態で、フィルム6によって覆わずに光照射装置14によって、光照射(ポストキュア)を15分間行った点で、実施例58と異なる。
比較例10おいては、真空包装装置13を使用していない点を除いて、実施例52と同様にして造形人工歯8aが接着された義歯を作製した。比較例10においては、半硬化状態の造形体5Aを模型2Eに取り付けた状態で、フィルム6によって覆わずに光照射装置14によって、光照射(ポストキュア)を15分間行った点で、実施例52と異なる。
光造形装置12を用いて、φ15mm×1mmの丸板を造形した。半硬化状態の造形体をイソプロピルアルコール中で超音波洗浄した。超音波洗浄は、1次洗浄、2次洗浄をそれぞれ5分間行った。サポートを取り除き、これを半硬化状態の造形体の重合率評価に用いた。
最終硬化状態の重合率評価サンプルおよび残留モノマー抽出率評価サンプルは、同一形状とし、下記の方法にて作製した。
半硬化状態の重合率評価が終了したサンプルをそのまま用いた。40mm×40mm×10mmの寸法に調整した石膏に半硬化状態の重合率評価が終了した丸板サンプルを置いた。石膏および丸板をフィルム6で覆い、真空包装装置13によってフィルム6で覆った部分の空気を排気し、石膏と丸板とを密着させた。その後、石膏と丸板とを密着させた状態のまま、光照射装置14によって光照射(ポストキュア)を15分間行った。フィルム6から光照射した造形体を取り出した後、丸板の裏面(光が直接照射されていない面)に対して、さらに15分間光照射し、これを最終硬化状態の造形体の重合率評価または残留モノマー抽出率評価サンプルに用いた。
半硬化状態の重合率評価が終了したサンプルをそのまま用いた。40mm×40mm×10mmの寸法に調整した石膏に半硬化状態の重合率評価が終了した丸板サンプルを置いた。光照射装置14によって光照射(ポストキュア)を15分間行った。その後、丸板の裏面(光が直接照射されていない面)に対して、さらに15分間光照射し、これを最終硬化状態の造形体の重合率評価または残留モノマー抽出率評価サンプルに用いた。
実施例50-58及び比較例8-10で作製した義歯及び義歯床をそれぞれ図26に示す模型2Eに取り付け、義歯及び義歯床と模型2Eとの隙間を測定した。間隙はファインチェッカー(株式会社松風製)を用い、全部床義歯の間隙を測定し、中央の部位の測定値で最も数字の大きいものを測定した。隙間は500μm以下であることが臨床的に許容でき、200μm以下がより好ましい。
フーリエ変換赤外分光光度計 FT-IR 6300(日本分光社製)を使用し、造形前の造形体の樹脂材料と半硬化状態の造形体5A及び最終硬化状態の造形体3C,3Dについて、6150cm-1付近のC=C帰属されるピーク強度を測定した。造形体と樹脂液材料のピーク強度の比率から重合率を算出した。重合率は下記の式により算出した。
あらかじめ造形体およびガラス容器を秤量した。造形体1枚をガラス容器に入れ、ガラス容器に造形体1gあたり10mLとなるようにアセトンを加えた後、振とう器を用いて室温で100rpmの速度で24時間振とうした。振とう終了後、ガラス容器から造形体を取り除き、ガラス容器内に残った液体を抽出液とした。ガラス容器に入った抽出液を70℃の乾燥機で24時間乾燥した後、室温まで放冷した。乾燥させた抽出液及びガラス容器の総重量を乾燥重量とし、ガラス容器の重量を風袋重量とする。乾燥重量と風袋重量の差から抽出量を算出し、下記の式より抽出率を求めた。
本発明に係る実施の形態7の補綴装置の製造装置及び製造方法について説明する。
本発明に係る実施の形態7によれば、以下の効果を奏することができる。
実施例に基づき、補綴装置4Eの製造装置1E及び製造方法を更に説明するが、本発明は、以下に示す実施例により制限されない。
実施例59においては、実施の形態7の製造装置1Eを用いて適合評価サンプルとして人工歯と義歯床が一体となった義歯の補綴装置4Eを作製した。具体的には、造形データ作成装置11によって、模型2Eに合わせて義歯の造形体の造形データを作成した。作成した造形データに基づいて、光造形装置12により、各材料に使用説明書もしくは初期設定されている条件により半硬化状態の図38に示す半硬化状態の義歯の造形体5Bを造形した。半硬化状態の造形体5Bをイソプロピルアルコール中で超音波洗浄した。超音波洗浄は、1次洗浄、2次洗浄をそれぞれ5分間行った。
2,2A,2B,2C,2D,2E 模型
3,3A,3B,3C,3D,3E,3F 造形体
4,4A,4B,4C,4D,4E 補綴装置
5,5A,5B 半硬化状態の造形体
5a 義歯床の造形体
6 フィルム
7,7A 凹部
7a 凸部
8 既製人工歯
8a 造形人工歯
8b 連結部
8c 人工歯の造形体
9 連結人工歯
10,10A,10B,10C 作製装置
11 造形データ作成装置
12 光造形装置
13 真空包装装置(被覆装置)
14 光照射装置
15 排気部
16 調節部
17 恒安定装置(加熱装置)
20 鋳造装置
21 スキャン装置
22 接着装置
23 加工装置
30 リング
31 埋没材
32 鋳型
33 溶融金属
34 鋳物
40 カバー部
41 本体部
42 第1脱気溝
43 パッド
44 第1シールヒータ
45 穴
46 スイッチ
47 第2脱気溝
48 パッド
49 脱気口
50 第2シールヒータ
51 クリップ
52 ポンプ
53 排気口
54 真空センサ
55 制御部
Claims (20)
- 歯科用の補綴装置を製造する方法であって、
患者の口腔内の少なくとも一部を再現した模型のスキャンデータを取得する取得工程、
前記スキャンデータに基づいて、歯科用の造形体の造形データを作成する造形データ作成工程、
前記造形データに基づいて、造形体を作製する造形体作製工程、
前記造形体を前記模型に取り付け、前記造形体と前記模型との少なくとも一部をフィルムによって覆う被覆工程、
前記フィルムで覆われた部分の空気を排気することによって、前記フィルムを変形させ、前記造形体を前記模型に対して密着させる排気工程、
前記造形体を前記模型に密着させた状態で、前記造形体を硬化させる硬化工程、
を含む、補綴装置の製造方法。 - 前記硬化工程は、
前記造形体を前記模型に密着させた状態で光を照射する光照射工程と、
前記造形体を前記模型に密着させた状態で加熱する加熱工程と、
のうち少なくとも一方を有する、
請求項1に記載の補綴装置の製造方法。 - 前記造形体作製工程は、
前記造形データに基づいて第1硬化状態の造形体を作製すること、
前記第1硬化状態の造形体に光を照射することによって、前記第1硬化状態より硬化した第2硬化状態の造形体を作製すること、
を有し、
前記硬化工程は、前記第2硬化状態の造形体を前記模型に密着させた状態で加熱する加熱工程を有する、
請求項1に記載の補綴装置の製造方法。 - 前記加熱工程の加熱温度は、50℃以上130℃以下である、
請求項2又は3に記載の補綴装置の製造方法。 - 前記排気工程は、前記フィルムで覆われた部分の真空度を40%以上99.9%以下に調節する調節工程を含む、
請求項1~4のいずれか一項に記載の補綴装置の製造方法。 - 前記造形体作製工程で作製される前記造形体の重合率は、50%以上98%以下である、
請求項1~5のいずれか一項に記載の補綴装置の製造方法。 - 前記フィルムの伸び率は、50%以上500%以下であり、
前記フィルムは、波長100nm以上780nm以下の光を透過する、
請求項1~6のいずれか一項に記載の補綴装置の製造方法。 - 前記造形体作製工程は、デジタルライトプロセッシング方式の光造形装置によって前記造形体を作製する、
請求項1~7のいずれか一項に記載の補綴装置の製造方法。 - 前記造形体は、クラウン、ブリッジ、レジン床、レジン床義歯及び矯正用スプリントのうちのいずれかである、
請求項1~8のいずれか一項に記載の補綴装置の製造方法。 - 更に、
硬化された前記造形体を鋳造用パターンとして用いて、補綴装置製造用の鋳型を作製する鋳型作製工程、
前記鋳型に溶融金属を導入する鋳込み工程、
前記鋳型を壊して鋳物を取り出す掘り出し工程、
前記鋳物を研削材及び研磨材で調整し、補綴装置に仕上げる仕上げ工程、
を含む、請求項1~9のいずれか一項に記載の補綴装置の製造方法。 - 更に、
前記造形体に人工歯を接着する接着工程、
を含む、請求項1~9のいずれか一項に記載の補綴装置の製造方法。 - 補綴装置を製造するために用いられる被覆装置であって、
造形体と模型との少なくとも一部を覆うフィルム内の空気を排気する排気部を備え、
前記排気部は、前記フィルムで覆われた部分の空気を排気することによって、前記フィルムを変形させ、前記造形体を前記模型に対して密着させる、被覆装置。 - 更に、
前記フィルムで覆われた部分の真空度を40%以上99.9%以下に調節する調節部を備える、
請求項12に記載の被覆装置。 - 患者の口腔内を再現した模型のスキャンデータに基づいて作製した造形体と前記模型とを密着させて硬化することによって歯科用の補綴装置を製造する装置であって、請求項12又は13に記載の被覆装置を備える、補綴装置の製造装置。
- 更に、
患者の口腔内を再現した模型のスキャンデータを取得し、前記スキャンデータに基づいて、歯科用の造形体の造形データを作成する造形データ作成装置、
前記造形データに基づいて、造形体を作製する光造形装置、
前記造形体を前記模型に密着させた状態で、前記造形体を硬化させる硬化装置、
を備える、請求項14に記載の補綴装置の製造装置。 - 前記硬化装置は、
前記造形体を前記模型に密着させた状態で光を照射する光照射装置と、
前記造形体を前記模型に密着させた状態で加熱する加熱装置と、
のうち少なくとも一方を有する、
請求項15に記載の補綴装置の製造装置。 - 前記光造形装置は、前記造形データに基づいて第1硬化状態の造形体を作製し、
前記製造装置は、更に、前記第1硬化状態の造形体に光を照射することによって、前記第1硬化状態より硬化した第2硬化状態の造形体を作製する光照射装置を備え、
前記硬化装置は、前記第2硬化状態の造形体を前記模型に密着させた状態で加熱する加熱装置を有する、
請求項15に記載の補綴装置の製造装置。 - 前記加熱装置の加熱温度は、50℃以上130℃以下である、
請求項16又は17に記載の補綴装置の製造装置。 - 造形体と模型との少なくとも一部をフィルムによって覆った状態で、前記フィルムで覆われた部分の空気を排気することによって、前記造形体を前記模型に対して密着させ、前記造形体を前記模型に密着させた状態で硬化させた造形体によって作製される補綴装置。
- 歯科用の補綴装置を製造する方法であって、
歯科用の造形体を作製する造形体作製工程、
患者の口腔内の少なくとも一部を再現した模型に前記造形体を取り付け、前記造形体と前記模型との少なくとも一部をフィルムによって覆う被覆工程、
前記フィルムで覆われた部分の空気を排気することによって、前記フィルムを変形させ、前記造形体を前記模型に対して密着させる排気工程、
前記造形体を前記模型に密着させた状態で、前記造形体を硬化させる硬化工程、
を含む、補綴装置の製造方法。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1038195S1 (en) | 2021-10-27 | 2024-08-06 | Sprintray, Inc. | Post-curing chamber |
| JP7430746B2 (ja) | 2022-05-31 | 2024-02-13 | 株式会社医科歯科技研 | 入れ歯の成形方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US12194684B2 (en) | 2025-01-14 |
| CN114423591A (zh) | 2022-04-29 |
| JP7557474B2 (ja) | 2024-09-27 |
| EP4032690A1 (en) | 2022-07-27 |
| EP4032690B1 (en) | 2025-05-28 |
| KR20220092855A (ko) | 2022-07-04 |
| JPWO2021054400A1 (ja) | 2021-03-25 |
| US20220347927A1 (en) | 2022-11-03 |
| EP4032690A4 (en) | 2023-09-20 |
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