[go: up one dir, main page]

WO2024172192A1 - Procédé de fabrication de blocs de résine composite hybride de coupe dentaire contenant du fluor et de l'acide caprique - Google Patents

Procédé de fabrication de blocs de résine composite hybride de coupe dentaire contenant du fluor et de l'acide caprique Download PDF

Info

Publication number
WO2024172192A1
WO2024172192A1 PCT/KR2023/002400 KR2023002400W WO2024172192A1 WO 2024172192 A1 WO2024172192 A1 WO 2024172192A1 KR 2023002400 W KR2023002400 W KR 2023002400W WO 2024172192 A1 WO2024172192 A1 WO 2024172192A1
Authority
WO
WIPO (PCT)
Prior art keywords
raw material
composite resin
capric acid
hybrid composite
manufacturing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2023/002400
Other languages
English (en)
Korean (ko)
Inventor
송은영
박민주
강홍원
전미진
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2024172192A1 publication Critical patent/WO2024172192A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A61C13/087—Artificial resin teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/831—Preparations for artificial teeth, for filling teeth or for capping teeth comprising non-metallic elements or compounds thereof, e.g. carbon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
    • A61K6/891—Compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/50—Removing moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles

Definitions

  • the present invention relates to a method for manufacturing a hybrid composite resin block for dental cutting processing containing fluorine and capric acid, and more specifically, to a method for manufacturing a hybrid composite resin block for dental cutting processing containing fluorine and capric acid, which has excellent properties and processability and can be used to manufacture dental prosthetics such as inlays, artificial teeth, crowns, and bridges through CAD/CAM processing.
  • Dental prosthetic restorative materials used in dentistry to replace lost teeth or parts of teeth due to caries, fractures, damage, or defects in dentistry, such as inlays, artificial teeth, crowns, and bridges, can be largely divided into resin, ceramic, and metal.
  • composites that are a mixture of organic and inorganic materials have been developed, and they can be broadly divided into four types: metals, ceramics, polymers, and composites.
  • These dental materials are used in dentistry in various ways according to their characteristics, such as aesthetics and physical properties, according to the patient's condition.
  • the resin used in dentistry is made up of numerous monomers formed by covalent bonds between carbon and hydrogen, forming a polymer chain, and after polymerization, forming a polymer.
  • the resin is used for various purposes, such as cavity filling materials, denture bases for complete or partial dentures, artificial teeth, dental adhesives (resin-based cement), sealants, restorative materials, orthodontic appliances, and denture base lining materials.
  • Dental resins can also be classified into heat-polymerizing resins, self-polymerizing resins, and light-polymerizing (composite) resins depending on their composition and polymerization mechanism.
  • composite resin In dentistry, a mixture of organic polymers and inorganic fillers is called a composite resin, and it has been widely used recently because it has excellent aesthetics and properties. Metal materials have excellent properties but are not aesthetically pleasing, and because they do not bond well with teeth, a lot of tooth removal is required to prevent the loss of the restoration, whereas composite resins have the advantage of excellent aesthetics and can reduce tooth removal, strengthening structures vulnerable to defects. Composite resins can be classified into light-curing, self-curing, and dual-curing types depending on the polymerization method.
  • Light-curing types are polymerized by exposing them to light of a specific wavelength depending on the photopolymerization initiator, self-curing types are polymerized by slowly hardening over time, and dual-curing types are methods in which both of these processes occur.
  • the composite material most commonly used as a direct restorative material in dentistry is light-curing composite resin.
  • Light-curing composite resins are generally supplied in a paste state, but they do not harden during storage and must be exposed to light of a specific wavelength that can polymerize the compound in order to polymerize.
  • Light-curing resins have many advantages over self-curing resins. Namely, since no mixing is required, the risk of air inclusion is reduced, so bubble formation is minimized; polymerization of the resin does not begin until it is exposed to light of an appropriate wavelength, so it is easy to store; the practitioner can control the working time and it is easy to give a shape; since the polymerization time is short, the working time is also shortened; and since filler is added, the physical properties are excellent.
  • Ultraviolet rays which were initially adopted as a polymerization light, had disadvantages such as being harmful to the human body and having weak penetrability to composite resins. Therefore, LED light or halogen light in the visible light range, which is safe for the human body and can polymerize more deeply in a shorter period of time than ultraviolet rays, is currently commonly used.
  • CAD/CAM digital equipment
  • 3D printers 3D printers
  • CAD/CAM digital equipment
  • 3D printers 3D printers
  • These automated equipment can produce dental prosthesis by cutting, milling, and processing the required prosthesis into the exact shape and form at a faster speed and with less labor than the conventional manual method.
  • Dental prosthesis materials using CAD/CAM typically use mill blanks, i.e., solid blanks from which prosthesis is cut or carved.
  • Various materials such as zirconia, glass ceramics, metals, wax, PMMA, PEEK, and hybrid composites are being applied to dental materials produced using CAD/CAM systems recently.
  • PMMA polymethyl methacrylate
  • PMMA polymethyl methacrylate
  • restorative materials such as temporary dentures, denture bases, implant superstructures, and splints for temporomandibular joint patients.
  • problems such as polymerization shrinkage and moisture absorption of denture base resin, volume change due to thermal expansion, low wear resistance and strength, discoloration, and allergic reactions to unreacted monomers have been pointed out.
  • PEEK material is also a material widely used in orthopedics due to its excellent properties, and research is being conducted for dental CAD/CAM cutting processing, but it has unclear shortcomings.
  • aesthetic CAD/CAM cutting processing prosthetic restorative materials in dentistry zirconia blocks are widely used. Although it has many advantages such as excellent aesthetics and properties of ceramics, it is released in a semi-sintered state due to CAD/CAM cutting processing, and it is inconvenient to have to re-sinter it after CAD/CAM cutting processing when manufacturing a prosthesis.
  • ceramic-based cutting processing composite materials have been introduced recently, but they are also very hard, so they have the disadvantage of excessive wear of cutting tools, long production time of dental prosthetics, and damage to opposing teeth due to their high hardness.
  • Vargas MA The spectrum of composites: new techniques and materials. J Am Dent Assoc131(Suppl): (2000) PP.26-30.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a dental hybrid composite resin block that is not in a paste form that requires hardening in a patient's oral cavity, but is completely hardened and can be manufactured into a dental prosthesis through CAD/CAM cutting processing.
  • the present invention provides a method for manufacturing a hybrid composite resin block for dental cutting processing containing fluorine and capric acid, comprising the steps of: preparing raw materials including an organic polymer matrix, an inorganic filler, a photoinitiator, fluorine, and capric acid; mixing the raw materials; putting the mixed raw materials into a mold and centrifugally pressurizing to remove air bubbles inside the raw materials and performing additional mixing; pressing the raw materials contained in the mold to form a mold; light-curing the molded raw materials while contained in the mold; and removing the cured molded product from the mold to obtain a hybrid composite resin block for CAD/CAM cutting processing.
  • the organic polymer matrix comprises one or more of epoxy dimethacrylate Bisphenol A-glycidyl methacrylate, bisphenol A ethoxylated dimethacrylate and urethane dimethacrylate, wherein the epoxy dimethacrylate Bisphenol A-glycidyl methacrylate is included in a range of 7.788 wt.% ⁇ 15% based on the weight of the raw material, and when the epoxy dimethacrylate Bisphenol A-glycidyl methacrylate, bisphenol A ethoxylated dimethacrylate and urethane dimethacrylate are included in an amount of 7.788 wt.% ⁇ 15% based on the weight of the raw material, It is included in the range of 6.780 wt.% ⁇ 15%, and the urethane dimethacrylate is included in the range of 9.800 wt.% ⁇ 15% based on the weight of the raw material.
  • the inorganic filler includes one or more of silicon oxide, silane, dichlorodimethyl-, reaction products with silica, and barium glass.
  • the silicon oxide is included in an amount of 1.500 wt.% ⁇ 15% relative to the weight of the raw material
  • the silane, dichlorodimethyl-, reaction products with silica are included in an amount of 1.500 wt.% ⁇ 15% relative to the weight of the raw material
  • the barium glass is included in an amount of 68.000 wt.% ⁇ 15% relative to the weight of the raw material.
  • the photoinitiator is camphorquinone, and the camphorquinone is included in an amount of 0.080 wt.% ⁇ 15% relative to the weight of the raw material.
  • the fluorine is a fluorine compound such as diphenyliodonium hexafluorophosphate (DIFP), and the diphenyliodonium hexafluorophosphate is included in a range of 0.01 to 0.1 wt.% ⁇ 15% relative to the weight of the raw material, and the capric acid is included in a range of 0.5 to 1.5 wt.% ⁇ 15% relative to the weight of the raw material.
  • DIFP diphenyliodonium hexafluorophosphate
  • the raw material further comprises a retarder for delaying curing, the retarder being butylated hydroxytoluene, and the butylated hydroxytoluene is contained in a range of 0.050 wt.% ⁇ 15% relative to the weight of the raw material.
  • the raw material further includes a pigment for imparting color.
  • the step of mixing the raw materials comprises placing the raw materials into an impeller mixer and mixing them at a temperature range of 30 to 70° C. and a time range of 48 hours ⁇ 15%.
  • the centrifugal pressurization is a process of pressurizing while rotating and revolving the mold, with the revolving speed being 500 to 1,000 rpm and the rotational speed being 400 to 600 rpm.
  • the pressure applied during the pressing and molding process is 30 to 300 Bar.
  • the mold includes a bowl-shaped outer mold and a bowl-shaped inner mold that is inserted into the outer mold and can contain a raw material, and the inner mold has a hardness smaller than that of the outer mold, so that after the raw material is hardened, the inner mold can be easily separated from the outer mold, and after being separated from the outer mold, the inner mold can be easily obtained by bending the inner mold to form a hardened molded product.
  • one or more projections protruding outward are formed on the upper edge of the inner mold, and one or more grooves into which the projections can be seated are formed on the outer mold, so that the inner mold rotates together with the outer mold without rotating separately from it during the centrifugal pressurizing process.
  • the inner mold and the outer mold are perforated with microscopic holes that allow air bubbles inside the raw material to be discharged to the outside during the centrifugal pressurization process.
  • the diameter of the pressing surface of the press is smaller than the diameter of the inner mold, and the pressing surface presses only the upper surface of the raw material in a flat range excluding the raised edge of the upper surface after centrifugal pressing, and the density of the remaining portions excluding the side perimeter including the raised edge portion is made the same.
  • the pressurized surface is perforated with a bubble discharge hole capable of discharging bubbles discharged from the upper surface of the raw material to the outside.
  • the present invention further provides a hybrid composite resin block for dental cutting processing manufactured by the above manufacturing method.
  • the present invention has the following excellent effects.
  • the hybrid composite resin block of the present invention has the advantage of being able to manufacture a dental prosthesis and fit it to a patient through CAD/CAM cutting processing without the need for separate curing in the patient's oral cavity.
  • the method for manufacturing a hybrid composite resin block of the present invention has the advantage of imparting an antibacterial function and promoting a polymerization reaction by including fluorine and capric acid in the raw materials, thereby improving physical properties.
  • the mold containing the raw material is doubled to facilitate separation after curing, and even if doubled, the inner and outer molds are prevented from rotating relative to each other, so that centrifugal pressurization can be performed at a desired speed, which has the advantage of being possible.
  • the method for manufacturing a hybrid composite resin block of the present invention has the advantage of improving the density of the product by forming holes for air discharge in the mold and press.
  • the pressing surface of the press is made smaller than the inner diameter of the mold, thereby allowing pressing molding with the same density in the remaining area except for the edge, thereby greatly improving the quality of the product.
  • FIG. 1 is a drawing showing a hybrid composite resin block and a dental prosthetic restoration processed with the block according to one embodiment of the present invention
  • Figure 2 is a drawing for explaining a method for manufacturing a hybrid composite resin block according to one embodiment of the present invention.
  • FIG. 3 is a drawing showing a mold used in manufacturing a hybrid composite resin block according to one embodiment of the present invention
  • FIG. 4 is a drawing for explaining the micro-holes of a mold used in the manufacture of a hybrid composite resin block according to one embodiment of the present invention.
  • FIG. 5 is a drawing for explaining a bubble discharge hole of a press used in manufacturing a hybrid composite resin block according to one embodiment of the present invention.
  • FIG. 6 is a drawing for explaining the size of the pressing surface of a press when manufacturing a hybrid composite resin block according to one embodiment of the present invention.
  • Figure 7 is a drawing for explaining a hybrid composite resin block pressurized by the pressurizing process of Figure 6.
  • FIG. 1 is a drawing showing a hybrid composite resin block and a dental prosthetic restorative material processed with the block according to one embodiment of the present invention.
  • the present invention relates to a method for manufacturing a hybrid composite resin block for dental cutting processing containing fluorine and capric acid.
  • the hybrid composite resin block (1) manufactured by the manufacturing method of the present invention is not in the form of a paste that must be hardened in the oral cavity, but is a block that can be manufactured into a dental prosthetic restorative (2) through CAD/CAM cutting processing after hardening is complete, and then can be immediately fitted to a patient.
  • FIG. 2 is a drawing for explaining a method for manufacturing a hybrid composite resin block according to one embodiment of the present invention.
  • a method for manufacturing a hybrid composite resin block first prepares a raw material (100) used in manufacturing (S1000).
  • the above raw materials basically include an organic polymer matrix (110), an inorganic filler (120), and a photoinitiator (130), and fluorine and capric acid may be further added.
  • a retarder to control the speed of curing and a pigment to express color may be added.
  • the organic polymer matrix (110) may be a monomer, an oligomer, a crosslinking agent, etc. for a crosslinking reaction, and may include, for example, one or more of epoxy dimethacrylate Bisphenol A-glycidyl methacrylate (Bis-GMA), bisphenol A ethoxylated dimethacrylate (Bis-EMA), and urethane dimethacrylate (UDMA).
  • Bis-GMA Bisphenol A-glycidyl methacrylate
  • Bis-EMA bisphenol A ethoxylated dimethacrylate
  • UDMA urethane dimethacrylate
  • composition may include one or more selected from the group consisting of ethylene glycol dimethacrylate (TGDMA), dipentaerythritol pentaacrylate monophosphate (PENTA), 2-hydrozyethyl methacrylate (HEMA), polyalkenic acid, biphenyl dimethacrylate (BPDM), and glycerol phosphate dimethacrylate (GPDM).
  • TGDMA ethylene glycol dimethacrylate
  • PENTA dipentaerythritol pentaacrylate monophosphate
  • HEMA 2-hydrozyethyl methacrylate
  • BPDM biphenyl dimethacrylate
  • GPDM glycerol phosphate dimethacrylate
  • the epoxy dimethacrylate A-glycidyl methacrylate is included in a range of 7.788 wt.% ⁇ 15% relative to the weight of the raw material
  • the bisphenol A ethoxylated dimethacrylate is included in a range of 6.780 wt.% ⁇ 15% relative to the weight of the raw material (100)
  • the urethane dimethacrylate is included in a range of 9.800 wt.% ⁇ 15% relative to the weight of the raw material.
  • the aforementioned monomers play an important role in the dispersion of the composition during subsequent photopolymerization, which affects the operability during dental treatment, and after treatment, affects physical properties such as wear resistance and durability.
  • the composition and content of the monomers can be used within an appropriate range depending on the method, part, and purpose of use. However, if the content of the monomers is too low, polymerization may not occur properly or it may be difficult to expect the desired strength after the procedure, and on the other hand, if it is included in excessive amounts, the procedureability may be reduced during dental treatment due to increased flowability.
  • the inorganic filler (120) is included to improve wear resistance and reduce shrinkage during curing, and includes one or more of silicon oxide, silane, dichlorodimethyl-, reaction products with silica, and barium glass, and preferably, all of the silicon oxide, silane, dichlorodimethyl-, reaction products with silica, and barium glass may be included.
  • the silicon oxide is included in an amount of 1.500 wt.% ⁇ 15% relative to the weight of the raw material
  • the silane, cyclohexane, and reaction product with silica are included in an amount of 1.500 wt.% ⁇ 15% relative to the weight of the raw material
  • the barium glass is included in an amount of 68.000 wt.% ⁇ 15% relative to the weight of the raw material.
  • the photoinitiator (130) is an initiator for polymerizing a plurality of monomers, and depending on the type of catalyst used in the polymerization reaction, the reaction may proceed by a cation formation mechanism, an anion formation mechanism, a radical formation mechanism, etc.
  • camphorquinone was used as the photoinitiator (130), and it is preferable that the camphorquinone is included in a range of 0.080 wt.% ⁇ 15% relative to the weight of the raw material.
  • the fluorine is added for antibacterial properties of the polymer, and the capric acid promotes photopolymerization reaction and facilitates mixing when mixing raw materials.
  • the above fluorine is a fluorine compound such as diphenyliodonium hexafluorophosphate (DIFP), and the diphenyliodonium hexafluorophosphate is included in a range of 0.01 to 0.1 wt.% ⁇ 15% relative to the weight of the raw material, and the capric acid is included in a range of 0.5 to 1.5 wt.% ⁇ 15% relative to the weight of the raw material.
  • DIFP diphenyliodonium hexafluorophosphate
  • the retarder performs the function of controlling the curing speed
  • the retarder is butylated hydroxytoluene, and it is preferable that the butylated hydroxytoluene is included in a range of 0.050 wt.% ⁇ 15% based on the weight of the raw material.
  • the pigment may be used by appropriately mixing bismuth vanadium oxide (YELLOW (4.8%) V1010: Bismuth vanadium oxide), C.I. (color index) pigment yellow 53/antimony nickel titanium oxide yellow (YELLOW (9.6%) K1011: C.I. Pigment Yellow 53 or Antimony nickel titanium oxide (Yellow)), and di-iron trioxide (RED (4.8%)/B.RED110: Iron (III) oxide) considering the patient's tooth color.
  • YELLOW bismuth vanadium oxide
  • K1011 C.I. Pigment Yellow 53 or Antimony nickel titanium oxide (Yellow)
  • di-iron trioxide RED (4.8%)/B.RED110: Iron (III) oxide
  • the mixing of the above raw materials (100) can be performed, for example, through an impeller mixer (10), and when the impeller mixer (10) is used, mixing is performed for 48 hours ⁇ 15% in a temperature range of 30 to 70°C so that all raw materials are evenly mixed.
  • any mixer can be used to mix the above raw materials (100) as long as the raw materials can be evenly mixed.
  • the mixed raw material (100a) is put into a mold (200) and centrifugally pressurized to remove air bubbles inside the raw material (100a) and allow additional mixing to take place (S3000).
  • the centrifugal pressurization is a process of removing air bubbles by simultaneously rotating the mold (100) around the rotation axis (a) and the rotation axis (b), and the rotation speed is preferably 500 to 1,000 rpm and the rotation speed is preferably 400 to 600 rpm.
  • the mold (200) is intended to contain mixed raw materials (100a), pressurize and then light-cure them, and is made of transparent or translucent resin, and includes a hard outer mold (210) and a soft inner mold (220).
  • the inner mold (220) is combined with the inside of the outer mold (210) so that the raw material (100a) is actually contained therein.
  • the outer mold (210) is made of polycarbonate (PC)
  • the inner mold (220) is made of polyethylene terephthalate (PET).
  • the inner mold (220) can be used for a single use, has a hardness lower than that of the outer mold (210), can be easily removed from the outer mold (210) after the subsequent hardening process, and can obtain a hardened molded product by bending, there are no special restrictions on the material.
  • outer mold (210) and the inner mold (220) are each manufactured in a circular, flat bowl shape.
  • one or more protrusions (221) protruding outward are formed on the upper edge of the inner mold (220), and one or more grooves (221) that can be combined in correspondence with the protrusions (221) are formed in the outer mold (210).
  • the protrusion (221) may be formed in the outer mold (210) and the groove (221) may be formed in the inner mold (220).
  • the inner mold (220) and the outer mold (210) do not rotate separately but rotate together during the centrifugal pressurization process, thereby allowing the raw material to rotate and revolve at a desired rotation speed and discharge air bubbles.
  • the inner mold (220) and the outer mold (210) are each perforated with a number of micro-holes (212, 222), and the micro-holes (222) of the inner mold (220) and the micro-holes (212) of the outer mold (210) are connected to each other, so that when centrifugal pressure is applied, air bubbles inside the raw material (110a) are discharged not only from the upper surface of the raw material (110a) but also from the side and lower surface.
  • the mold (220) can effectively discharge air bubbles inside the raw material (110a) to prevent deterioration of physical properties after curing.
  • centrifugally pressurized raw material (100b) is compressed and molded using a press (30) (S4000).
  • the pressure of the press (30) is preferably 30 to 300 Bar. If the pressure is less than 30 Bar, the density of the raw material is low, resulting in a deterioration of physical properties after hardening. If the pressure is more than 300 Bar, the mold (200) is damaged, so care must be taken.
  • the diameter of the pressure surface (31) of the press (30) is a size that is inserted to fit exactly into the inner diameter of the inner mold (220), and it is preferable that a bubble discharge hole (32) is formed in the pressure surface (310) so that bubbles inside the raw material (100b) can be discharged to the upper surface during the pressure molding process.
  • the diameter of the pressure surface (31) of the press (30) is used to a size that exactly matches the inner diameter of the inner mold (220), there may be a limit to the discharge of bubbles even if the bubble discharge hole (32) is formed.
  • the diameter (d1) of the pressing surface (31) of the press (30) can be made smaller than the inner diameter (d2) of the inner mold (220) so that bubbles can be discharged to the upper edge of the raw material.
  • the upper edge (100d) of the raw material forms a height (h1) that is slightly raised compared to the height (h1) of the raw material that is pressed by the pressurizing surface (31).
  • the remaining portion (1a) can be processed, excluding the side circumference (1b) including the raised edge, to produce a dental prosthesis.
  • the diameter of the pressure surface (31) of the press (30) is made smaller than the inner diameter of the inner mold (220), there is a disadvantage in that the side edge (1b) cannot be used, but there is an advantage in that the properties of the usable portion (1a) can be consistently manufactured to a desired value by effectively discharging air bubbles within the raw material.
  • the quality of the product can be improved by easily discharging the bubbles in the remaining usable portion (1a) to keep the density constant.
  • the pressurized raw material (100c) is put into a light curing device and the LED module (40) is operated to harden the raw material (100c) (S5000).
  • the LED module (40) can produce a wavelength of 420 to 490 nm (peak wavelength 460 nm) and an output of up to 2,000 to 4,000 mW/cm2.
  • the wavelength and maximum output of the LED module (40) may vary depending on the type of raw material and the size and thickness of the raw material after pressure molding.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dentistry (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Dental Preparations (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

La présente invention concerne un procédé de fabrication de blocs de résine composite hybride de coupe dentaire contenant du fluor et de l'acide caprique et, plus particulièrement, un procédé de fabrication de blocs de résine composite hybride de coupe dentaire contenant du fluor et de l'acide caprique, les blocs présentant d'excellentes propriétés physiques et une excellente aptitude au traitement, permettant ainsi de fabriquer des prothèses dentaires, telles que des inlays, des dents artificielles, des couronnes et des bridges à l'aide d'un traitement CAO/FAO.
PCT/KR2023/002400 2023-02-17 2023-02-20 Procédé de fabrication de blocs de résine composite hybride de coupe dentaire contenant du fluor et de l'acide caprique Ceased WO2024172192A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020230021318A KR102589939B1 (ko) 2023-02-17 2023-02-17 불소 및 카프르산이 포함된 치과 절삭가공용 하이브리드 복합 레진블록의 제조방법
KR10-2023-0021318 2023-02-17

Publications (1)

Publication Number Publication Date
WO2024172192A1 true WO2024172192A1 (fr) 2024-08-22

Family

ID=88506190

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2023/002400 Ceased WO2024172192A1 (fr) 2023-02-17 2023-02-20 Procédé de fabrication de blocs de résine composite hybride de coupe dentaire contenant du fluor et de l'acide caprique

Country Status (2)

Country Link
KR (1) KR102589939B1 (fr)
WO (1) WO2024172192A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102756773B1 (ko) * 2024-06-24 2025-01-21 주식회사 이노메디 치과용 수지 블록의 제조방법 및 치과용 수지 블록

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101870500B1 (ko) * 2013-09-24 2018-06-22 가부시키가이샤 지씨 치과용 레진 블록의 제조 방법
KR20190000631A (ko) * 2017-06-23 2019-01-03 (주) 덴바이오 카프르산이 포함된 치과수복용 복합레진의 제조방법 및 이를 통해 제조된 치과수복용 복합레진
KR20190080807A (ko) * 2017-12-28 2019-07-08 (주) 베리콤 치과용 컴포지트 블랭크 및 그의 제조방법
KR102121353B1 (ko) * 2018-12-28 2020-06-10 (주) 베리콤 복수층을 갖는 갖는 치과용 컴포지트 블랭크 및 그의 제조 방법
KR20220066478A (ko) * 2020-11-16 2022-05-24 주식회사 바이오덴 치과용 하이브리드 레진 블록 조성물 및 이를 이용한 치과용 하이브리드 레진 블록의 제조 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101870500B1 (ko) * 2013-09-24 2018-06-22 가부시키가이샤 지씨 치과용 레진 블록의 제조 방법
KR20190000631A (ko) * 2017-06-23 2019-01-03 (주) 덴바이오 카프르산이 포함된 치과수복용 복합레진의 제조방법 및 이를 통해 제조된 치과수복용 복합레진
KR20190080807A (ko) * 2017-12-28 2019-07-08 (주) 베리콤 치과용 컴포지트 블랭크 및 그의 제조방법
KR102121353B1 (ko) * 2018-12-28 2020-06-10 (주) 베리콤 복수층을 갖는 갖는 치과용 컴포지트 블랭크 및 그의 제조 방법
KR20220066478A (ko) * 2020-11-16 2022-05-24 주식회사 바이오덴 치과용 하이브리드 레진 블록 조성물 및 이를 이용한 치과용 하이브리드 레진 블록의 제조 방법

Also Published As

Publication number Publication date
KR102589939B1 (ko) 2023-10-16

Similar Documents

Publication Publication Date Title
Rueggeberg From vulcanite to vinyl, a history of resins in restorative dentistry
AU635809B2 (en) Semi-thermoplastic molding composition having heat-stable custom shape memory
EP0630641B1 (fr) Méthode et distributeur pour la fabrication de produits dentaires
US5709548A (en) Dental crown liner composition and methods of preparing provisional applications
CA2664786C (fr) Procede de fabrication de couronnes et de bridges dentaires provisoires et a long terme
EP2642967B1 (fr) Substance dentaire à haute résistance mécanique
EP0742001B1 (fr) Matériaux de restauration dentaire de couleur stable
US5171147A (en) Dental bridge
US20130101778A1 (en) Block body for producing denture base
US20040241609A1 (en) Method of manufacturing high strength dental restorations
JPH07145018A (ja) 歯科組成物、補てつ物、および歯科補てつ物の製法
GB2182853A (en) Method of preparing plated dentures
WO2024172192A1 (fr) Procédé de fabrication de blocs de résine composite hybride de coupe dentaire contenant du fluor et de l'acide caprique
US4940676A (en) Ceramic compositions and methods employing same
WO2023080303A1 (fr) Procédé destiné à la préparation de résines médicales dentaires et totales destiné à l'impression en 3d à l'aide de xylitol et de propolis
WO1995035071A1 (fr) Compostion de renforcement pour couronne dentaire et procedes de preparation de restaurations provisoires
US9925124B2 (en) Dental composition suitable for grinding with automatic grinding apparatus
KR20220096250A (ko) 고강도 및 고심미성의 치아 수복용 강화 복합소재 및 그 제조방법
WO2023158154A1 (fr) Prothèse dentaire en céramique hybride de type fabrication additive
KR101613097B1 (ko) 치과용 간접 수복을 위한 중공 기둥 형태의 컴포지트 블랭크
EP0358713B1 (fr) Compositions ceramiques ameliorees et procedes d'utilisation de celles-ci
US20220071746A1 (en) Dental mill blank with optimized color tone
KR101689535B1 (ko) 복합레진 및 그 제조방법
WO2021206288A1 (fr) Bloc prothétique intégré, à butée découpable et son procédé de fabrication
Shabana et al. The Outcome of 3D printing and CAD-CAM Techniques on Marginal Accuracy of Provisional Crowns

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23922994

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE