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WO2017005905A1 - Dispositif et procédé pour la fixation de dents prothétiques - Google Patents

Dispositif et procédé pour la fixation de dents prothétiques Download PDF

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Publication number
WO2017005905A1
WO2017005905A1 PCT/EP2016/066290 EP2016066290W WO2017005905A1 WO 2017005905 A1 WO2017005905 A1 WO 2017005905A1 EP 2016066290 W EP2016066290 W EP 2016066290W WO 2017005905 A1 WO2017005905 A1 WO 2017005905A1
Authority
WO
WIPO (PCT)
Prior art keywords
teeth
shrink film
prosthetic teeth
prosthetic
denture
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/EP2016/066290
Other languages
German (de)
English (en)
Inventor
Tim WEITZEL
Yohannes Woldegergis
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.)
Kulzer GmbH
Original Assignee
Heraeus Kulzer GmbH
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 Heraeus Kulzer GmbH filed Critical Heraeus Kulzer GmbH
Publication of WO2017005905A1 publication Critical patent/WO2017005905A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0004—Computer-assisted sizing or machining of dental prostheses
    • 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
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0006—Production methods
    • 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
    • A61C13/12—Tools for fastening artificial teeth; Holders, clamps, or stands for artificial teeth

Definitions

  • the invention relates to a method for the fixation of prefabricated prosthetic teeth, and preferably also for the processing of prefabricated prosthetic teeth.
  • the invention also relates to a set comprising a plurality of prosthetic teeth.
  • the invention thus relates to the manufacture and provision of prefabricated denture teeth for further processing for partial and total dental plastic prostheses, which are produced by machine in the CAM method (CAM - Computer-Aided Manufacturing) and which are computer-aided with CAD- Process (CAD - Computer - Aided Design).
  • the denture teeth can be provided as a semi-finished product for the partial or complete production of dental plastic prostheses with CAM method.
  • the currently common way is the analogous creation of prosthetic teeth.
  • the denture teeth are placed manually and individually on a wax base. This wax prosthesis is embedded in a cuvette with plaster in the next step, and then wash out the wax base with hot water after curing of the gypsum and to create a cavity for the denture plastic.
  • the prosthetic teeth remain in the plaster. A corresponding gypsum is injected into the cavity or "stuffed” and you get after curing of the plastic prosthesis or the finished prosthetic tooth.
  • the disadvantage of this is the positioning of the prosthetic teeth in a prosthesis base plate.
  • a tailor-made trough is prefabricated in a prosthesis base plate in order to then glue in the prefabricated denture teeth. This only works if there is enough space.
  • the prosthetic tooth must be ground for reasons of space.
  • Pre-fabricated prosthetic teeth are usually at least to be worked from basal in the preparation of prosthetic work. In the case of manual conversion, processing takes place individually per denture tooth by the processor. In this case, however, it no longer fits into the pre-produced cavity in the denture baseplate.
  • DE 10 201 1 101 678 A1 proposes that the crown region of a denture tooth is embedded in a carrier layer and that the denture tooth is subsequently processed.
  • This attachment of the prosthetic teeth is done either by wax or other meltable or curable masses. This achieves a firm and precise connection with simultaneously defined positioning of the denture teeth.
  • the disadvantage of this is that the prosthetic tooth must be partially exposed through partially thick layers of material through to edit the embedded crown area.
  • the remainder of the material used for embedding must be removed from the reworked denture teeth before they can be used to make a dental prosthesis.
  • the disadvantages of the method are also in the complex production of the body.
  • the carrier layer must cure before the denture tooth can be processed, since significant forces occur in particular when using automated CAM milling.
  • the position accuracy of the method also suffers from possible deformations of the not yet fully cured carrier layer, so that in extreme cases, the reworked prosthetic tooth is not milled exactly enough and therefore must be disposed of.
  • such a carrier layer can usually only be completely removed from the prosthetic tooth again with a certain expenditure. After use, the remains of the removed backing must be disposed of.
  • the object of the invention is therefore to overcome the disadvantages of the prior art.
  • a method and a set of denture teeth is to be provided, with the simplest possible, complete and inexpensive processing of denture teeth is possible. As few finishing steps as possible should be necessary. As many necessary parts as possible should be reusable to allow serial processing. Furthermore, a cleaning of the ground prosthetic teeth should be reduced or avoided as much as possible.
  • the method should be as cost effective and quickly implemented and the set to be produced as inexpensively. In addition, the milling or reworking of the prosthetic teeth should be possible as quickly and inexpensively. Furthermore, modern computer-controlled manufacturing processes with the method and the set to be implemented and the greatest possible automation can be achieved.
  • the objects of the invention are achieved by a method for the fixation of prefabricated prosthetic teeth, and preferably also for the processing, of prefabricated prosthetic teeth, comprising the following method steps:
  • the at least one shrink film is then shrunk and thereby fixes the prosthetic teeth in their position and orientation to each other.
  • the prefabricated prosthetic teeth are positioned in a predetermined position and / or orientation relative to each other and are brought into contact with the at least one shrink film.
  • the film is thermally shrunk.
  • the denture teeth are fixed.
  • Polyethylene films are preferably used as shrink films. Alternatively, polyolefin films may also be used.
  • the denture teeth may also be made for the denture teeth to be inserted into a template or a negative mold such that at least the basal or coronal ends protrude from the template or the negative mold, the denture teeth being in their position and orientation through the template or the negative mold be set to each other and wherein the at least one shrink film is placed at least on the basal or coronal ends of the denture teeth before the prosthetic teeth with the at least one shrink film are fixed, wherein preferably the basal and the coronal ends protrude from the template.
  • the positioning of the prosthetic teeth to each other can be achieved in a simple and easy to be carried out with the template or the negative mold.
  • the template or the negative mold With a suitable shape of the template or the negative mold, it can be fixed together with the denture teeth in the at least one shrink film for stable fixation of the denture teeth.
  • the template and the negative mold can also be multi-part.
  • the template or the negative mold consists of a non-plastically deformable material, preferably of a material having a modulus of elasticity of at least 0.2 GPa, more preferably from 0.2 GPa to 6 GPa.
  • the material in this case is preferably a plastic.
  • the at least one shrink film is heated, around which the denture teeth inserted into the template or the negative mold are placed, and then the at least one shrink film is shrunk onto the denture teeth with a pressure difference and the denture teeth in the prosthesis teeth Stencil or negative mold fixed.
  • the thus fixed prosthetic teeth can then easily withstand the mechanical stresses during milling of the denture teeth, without being moved or twisted unintentionally.
  • the pressure differential can be created by applying a vacuum on one side which sucks the shrink film onto the denture teeth and / or by applying an overpressure on one or the other side which presses the shrink film onto the denture teeth. It can be provided that between the template or the female mold and the denture teeth, the at least one shrink film is arranged and the denture teeth are fixed by shrinking the at least one shrink film, while they are positioned by the template or the negative mold.
  • the template or the negative mold after fixing the denture teeth with the at least one shrink film of the prosthetic teeth and the at least one shrink film is solved or separated.
  • the positioning is simplified without the template or the negative mold must then be used together with the denture teeth therein or for further processing.
  • the template or negative mold can be reused to position a new set of prefabricated denture teeth.
  • in the template passages are provided for enclosing a central circumference of the prosthetic teeth or in the female mold recesses for receiving coronal or basal ends of the denture teeth are provided, wherein the passages or recesses are formed such that the prosthetic teeth in a clear position and orientation in the bushings or wells are to be used.
  • the cervical or medial circumference of a denture tooth is the circumference of the denture tooth between the coronal end and the basal end.
  • the lead-throughs form negatives of the medial peripheries of the denture teeth between the basal and coronal ends of the denture teeth, or that the depressions form negatives of the coronal or basal ends of the denture teeth.
  • the negatives produce accurate fits so that the denture teeth can only be positioned in one orientation and position in the template or negative mold or are well defined.
  • the template or female mold is used to hold the teeth during milling, that is, when the template or female mold is fixed together with the denture teeth with the at least one shrink film, the denture teeth fixed therein are kept more stable.
  • the depressions in the negative mold are so deep that they extend to at most the beginning of undercut regions of the prosthetic teeth.
  • the depressions are so deep that they absorb at least 10% of the height of the denture teeth, preferably that they absorb at least 25% of the height of the denture teeth.
  • the height of the prosthetic teeth is the length of the denture teeth from the basal end of the denture teeth to the coronal end of the denture teeth.
  • each recess at least one continuous connection is provided, through which a negative pressure in the recess is to be generated.
  • the at least one continuous connection may, for example, be a continuous bore which extends from the depression to a surface of the negative mold outside the depression and which may be connected to a vacuum source or is connected.
  • the denture teeth can be sucked into the wells and thereby secure in the wells or on the negative mold.
  • the denture teeth are sucked in the correct position and orientation with the appropriate shape of the wells.
  • the depressions are negatives of the coronal sides of the prosthetic teeth, the effect is particularly strong.
  • the heated shrink film can be sucked onto the prosthetic teeth with the vacuum applied via the continuous bore.
  • the denture teeth no longer need to be sucked with the vacuum or the negative pressure in the wells.
  • the connection to the vacuum source is released after the at least one shrink film has been connected to the prosthetic teeth.
  • the negative mold can be detached from the prosthesis teeth fixed with the at least one shrink film, or it can be fixed with the prosthesis teeth with the at least one shrink film.
  • the invention proposes that the prosthetic teeth are positioned within a frame and / or a holder before they are fixed with the at least one shrink film, preferably by shrinking the at least one shrink film of the frame and / or the holder with the denture teeth get connected.
  • the shrinkage of the at least one shrink film is preferably carried out by applying the heated shrink film (s) to the surfaces of the denture teeth with a pressure difference, for example by sucking the at least one heated shrink film with a negative pressure.
  • a subsequent attachment in a milling machine can be simplified.
  • a fastening means such as a bayonet closure or a detent, be provided, with which the frame or the holder is to be attached to a milling cutter.
  • the denture teeth remain stable even if, in the subsequent processing of the denture teeth, or at least one denture tooth, the at least one shrunken shrink film is partially milled or opened.
  • the prosthesis teeth fixed with the at least one shrink film are fastened in a defined position in a holder of a CAM device for removing material of the denture teeth by a CAM method and at least one basal end at least one denture tooth is computer-controlled with the CAM device, the CAM device being preferably a computer-controlled milling device, more preferably a computer-controlled four-axis milling machine or five-axis milling machine.
  • the method for fixation is used beneficially for processing the denture teeth or at least one denture tooth.
  • the Fixation with the at least one shrink film is inexpensive feasible and sufficiently stable for processing with a CAM device.
  • This step makes use of the advantages that a device according to the invention and the method according to the invention offer for positioning, for automated methods in which the exact positioning according to the invention and the good accessibility of the area of the prosthetic teeth to be machined have a particularly advantageous effect.
  • the outer forms of all prefabricated prosthetic teeth used are present as the first data set and a second data set defines the exact positions and orientations of all fixed prefabricated prosthetic teeth in the at least one shrink film, wherein a subsequent processing of at least one denture tooth based on the first and of the second data set is carried out, preferably a subsequent processing with a CAD / CAM method based on the first and the second data set is performed.
  • fixation As a result, a complete automation of the method can be achieved.
  • advantages of fixation are made available for fully automated post-processing procedures, for which they are particularly well suited. Only by the claimed fixation namely a simple and inexpensive deployment of denture teeth in a high accuracy and positional fidelity is possible.
  • Preferred methods according to the invention may also be distinguished by the fact that during processing of the prosthetic teeth fixed in the at least one shrink film, the shrink film resting against the denture teeth is opened, preferably opened with the same tool with which the denture teeth are also machined.
  • the advantage offered by the at least one shrink film is used particularly well.
  • the at least one shrink film can namely be easily removed in areas without the stability of the structure would be too much affected, that is, without the fixation of the prosthetic teeth would be completely eliminated.
  • the fixed prosthetic teeth can also be used if the position and / or the orientation of the prosthetic teeth changes during the thermal shrinkage of the at least one shrink film.
  • a subsequent processing of at least one prosthetic tooth is carried out on the basis of the second data set, preferably a subsequent processing with a CAD / CAM method on the basis of the second data set.
  • the objects underlying the present invention are also achieved by a set for processing a plurality of prosthetic teeth having a plurality of prosthetic teeth, which are fixed in position and orientation relative to each other with at least one shrink film.
  • the shrink film is preferably thermally shrunk. Most preferably, the shrink wrap has first been heated and then applied to the denture teeth with a pressure differential. The denture teeth are preferably not heated.
  • the set comprises a template, a negative mold, a holder and / or a frame, which is or is connected via the at least one shrink film with the prosthetic teeth or are fixed in particular with the prosthetic teeth or are.
  • the set can also have a data carrier or a data packet with at least one data record relating to the shape of the prosthetic teeth and / or the position and / or orientation of the prosthetic teeth relative to one another. Furthermore, it can be provided that the set is produced by a method according to the invention.
  • the invention is based on the surprising finding that denture teeth are to be fixed in a unique position and orientation relative to one another via a shrink film so that the denture teeth can be processed with a fully automatic CAM method with the aid of a computer-controlled milling cutter.
  • the shrink film offers the surprising advantage that, even if it completely encloses the denture teeth, it can be easily opened in the places, at which a processing of the denture teeth should take place.
  • the opening of the at least one shrink film can be done with the same tools that are also used for processing the denture teeth.
  • the areas of the denture teeth to be treated may also be left free from the shrink film, in particular the basal ends of the denture teeth may be left exposed, that is, not covered by shrink film.
  • either a plurality of shrink films can be used one above the other or with the at least one shrink film, a template or a negative mold is additionally fixed, with which the prosthetic teeth are held in the desired position and orientation.
  • a method according to the invention it is possible with a method according to the invention to be able to machine the basal and coronal ends of the denture teeth with a milling cutter.
  • the method and set are particularly well suited for use with CAD / CAM methods, especially with CAM-controlled or computer-controlled milling.
  • the retouched denture teeth can be easily removed without residue by loosening the shrink film after processing and are immediately available for the treatment of a patient.
  • the attachment of denture teeth is fast and easy to carry out.
  • An elaborate production of the holder, as is necessary with wax holders, is omitted in the set according to the invention and the method according to the invention. In addition, it is not necessary to wait until the wax has solidified.
  • Shrink films are inexpensive to purchase and easy to use.
  • the great advantage of the method according to the invention lies in the very fast and almost tool-free and tool-free implementation. As a result, it is possible to dispense with the provision of larger storage quantities and order-related packaging can be carried out. Also eliminates the otherwise necessary for wax cleaning by brewing or brushing the denture teeth.
  • contact means in the template or negative mold can still improve the connection of the template or negative mold to the denture teeth.
  • polyvinyl alcohol can be used, which forms an adhesive bonding layer after solvent contained by evaporation.
  • the invention may provide, for example, that the denture teeth are provided fixed as a set with the at least one shrink film in the desired or known position and orientation so that they can be directly machined basal and / or coronal in the CAM process, in particular milled, can and Thus, the individual situation of the patient can be adjusted.
  • the prefabricated denture teeth must be positioned and held in a predefined position within the set that can be clamped in the machine.
  • a holder or a frame can be used which is expediently adapted to the receiving mechanism of the respective CAM machine.
  • the frame and / or the holder is or are contained in the set and is fixed to the denture teeth with the at least one shrink film.
  • the negative mold or the template and optionally the frame and / or the holder are preferably made of deformation-resistant material, for example an elastic plastic material such as polymethyl methacrylate (PMMA) or polyurethane (PU) or other plastics with filler or of metallic materials.
  • PMMA polymethyl methacrylate
  • PU polyurethane
  • the negative mold or the template is preferably produced by milling, but can also be produced by injection molding or sintering.
  • FIG. 1 shows a schematic cross-sectional view of a set according to the invention with a negative mold
  • FIG. 2 is a schematic cross-sectional view of an alternative set according to the invention
  • FIG. 3 shows a schematic cross-sectional view of a further alternative set according to the invention in a negative mold
  • FIG. 4 shows a schematic plan view of an inventive set with a frame
  • FIG. 5 shows a schematic cross-sectional view of a further alternative set according to the invention with a template.
  • FIG. 1 shows a schematic cross-sectional view of a set according to the invention.
  • the kit comprises a shrink film 1 which has been thermally shrunk and has been applied to the surfaces of a plurality of denture teeth 2.
  • the shrink film 1 is heated and then placed on the positioned prosthetic teeth 2. Subsequently, the heated shrink film 1 is sucked on the prosthetic teeth 2 with a negative pressure.
  • the set has a negative mold 6 in the form of a plate (bottom in Figure 1), in which the prosthetic teeth 2 (of which only one can be seen in the cross-sectional view of Figure 1) are arranged.
  • the prosthetic teeth 2 are inserted into matching recesses 8 in the female mold 6.
  • the negative mold 6 consists of a dimensionally stable material, such as a not too soft metal, such as brass or steel, but not lead, or of a hard plastic such as PMMA.
  • the negative mold 6 according to FIG. 1 can both belong to the set by being fixed with the shrink film 1 with the prosthetic teeth 2, as well as separately, so that the prosthetic teeth 2 with the shrink film 1 form the set and are removed from the negative mold 6 can.
  • the negative mold 6 with the recesses 8 then serves exclusively to position the prosthetic teeth 2 in a predetermined position and orientation relative to each other.
  • the prosthetic teeth 2 have a coronal side 12 and a coronal end 12 (bottom in Figure 1), a basal side 14 and a basal end 14 (in Figure 1 above) and a circumferential tooth neck between the coronal side 12 and the basal side 14 of Denture teeth 2 on.
  • the recesses 8 form a negative of the coronal sides 12 of the prosthetic teeth 2, so that the prosthetic teeth 2 with the coronal side 12 flush in the Wells 4 can be used. In addition to a slight hold, the position of the denture teeth 2, which differ from one another, is thus uniquely predetermined.
  • a bore 18 is provided, through which a negative pressure in the recess 8 can be generated, so that the denture tooth 2 is sucked into the recess 8 and thereby held there until the shrink film 1 to the prosthetic teeth 2 or to the Prosthetic teeth 2 and the female mold 6 is attached.
  • the negative pressure is used to absorb the shrink film 1 on the prosthetic teeth 2 and on the upper surface of the female mold 6.
  • the recesses 8 form a negative of the basal sides 14 of the denture teeth 2. Then the basal ends 14 of the prosthetic teeth 2 are exposed and can be processed without the shrink film 1 would have to be opened.
  • the circumferential tooth neck between the basal side 14 and the coronal side 12 should be enclosed by the shrink wrap 1 to prevent the denture teeth 2 from simply falling out of the shrunken shrink wrap 1.
  • the shrink film 1 Due to the thermal shrinkage of the shrink film 1, an elastic force is exerted on the prosthetic teeth 2, which fixes the denture teeth 2 on the female mold 6.
  • the position and orientation of the prosthetic teeth 2 is determined by the unique shape of the recesses 8.
  • the shrink film 1 When the shrink film 1 is closed around the female mold 6 (not shown in FIG. 1), the shrink film 1 exerts such an elastic force on the denture teeth 2 that the denture teeth 2 are pressed into the recesses 8. For firmer fixation of the prosthetic teeth 2 and several shrink films 1 can be superimposed and shrunk.
  • the negative pressure at the bore 18 can be removed, that is, the vacuum source to be separated.
  • the set of fixed denture teeth 2 is then inserted into a computer-controlled milling machine (not shown) and the denture teeth 2 are machined on the basal side 14 with the mill. If the female mold 6 is not part of the set, the coronal side 12 of the denture teeth 2 can also be processed.
  • a computer-controlled milling machine not shown
  • the coronal side 12 of the denture teeth 2 can also be processed.
  • a known form of the set and in known prefabricated prosthetic teeth 2 whose shape, position and Position or orientation can be used as a record is calculated on the basis of a CAM program in the computer by known methods, at which points basal material must be removed from the prosthetic teeth 2.
  • the stabilization and fixation of the prosthetic teeth 2 with the shrink film 1 and the negative mold 6 is so stable that a basal processing of the prosthetic teeth 2 with a milling machine is possible, without affecting the position and position of the prosthetic teeth 2 in the device due to mechanical stress changes.
  • the denture teeth 2 After the denture teeth 2 have been processed, they can be easily removed from the negative mold 6 or the shrink film 1 by loosening the shrink film 1 from the female mold 6 and glued into a prosthesis base (not shown) for producing a dental prosthesis.
  • FIG. 2 shows a schematic cross-sectional view of an alternative set according to the invention.
  • the set comprises a first shrink film 1, which has been thermally shrunk and thereby has been applied to the surfaces of a plurality of prosthetic teeth 2.
  • the prosthetic teeth 2 have a coronal side 12 and a coronal end 12 (in Figure 2 below), a basal side 14 and a basal end 14 (in Figure 2 above) and a circumferential tooth neck between the coronal side 12 and the basal side 14 of Denture teeth 2 on.
  • the first (upper) shrink film 1 encloses the basal sides 14 of the denture teeth 2.
  • the set has on the bottom side (in Figure 2 below), a second shrink film 20, which encloses the coronal sides 12 of the prosthetic teeth 2.
  • the two shrink films 1, 20 enclose the denture teeth 2 on all sides, or envelop them. In this case, the position and orientation of the prosthetic teeth 2 is fixed to each other.
  • a frame and / or a holder may also be enclosed in the shrink-films 1, 20 with the prosthetic teeth.
  • the frame and / or the bracket then serve to stabilize the set and can also be used to attach the set to or in the mill for machining the denture teeth 2.
  • the prosthetic teeth 2 can be processed in the set shown in Figure 2 on both sides, ie coronal and basal. Due to the thermal shrinkage of the shrink films 1, 20, an elastic force is exerted on the prosthetic teeth 2, which fixes the denture teeth 2. The position and orientation of the prosthetic teeth 2 is clearly defined relative to each other.
  • the set of fixed denture teeth 2 can be inserted into a computer-controlled milling machine (not shown).
  • the denture teeth 2 are processed on the basal side 14 and possibly also on the coronal side 12 with the milling cutter.
  • their shape, position and position or orientation can be used as a dataset, on the basis of which a CAM program is calculated in the computer by known methods, at which points basal material from the prosthetic teeth 2 must be removed.
  • the stabilization and fixation of the prosthetic teeth 2 with the shrink films 1, 20 is sufficiently stable, so that a basal processing of the prosthetic teeth 2 with a milling machine is possible without changing the position and the position of the prosthetic teeth 2 in the device due to the mechanical load , for more stable fixation of the prosthetic teeth 2, even more layers of the shrink film 1, 20 can be used.
  • the denture teeth 2 After the denture teeth 2 have been processed, they can be removed from the shrink film 1, 20 by loosening the shrink film 1 and glued into a denture base (not shown) for the production of a dental prosthesis.
  • FIG. 3 shows in a schematic cross-sectional view how the prosthetic teeth 2 can be positioned when the shrink films 1, 20 are applied.
  • a negative mold 26 is used, in which recesses 28 are present, in which the prosthetic teeth 2 can be placed in a unique position and orientation with the second shrink film 20 in between.
  • the shrink films 1, 20 may also be formed by a single shrink film which encloses the female mold 26 with the denture teeth 2 in a tubular manner.
  • the negative mold 26 is made of a dimensionally stable material, such as a not too soft metal, such as brass or steel, but not lead, or of a hard plastic such as PMMA.
  • Prosthetic teeth 2 is fixed, as well as separately, so that the prosthetic teeth 2 with the shrink films 1, 20 form the set (as shown in Figure 2) and can be removed from the female mold 26.
  • the negative mold 26 with the recesses 28 then serves exclusively to position the prosthetic teeth 2 in a predetermined position and orientation relative to each other.
  • the thickness of the shrink film 20 is taken into account in the size of the recesses 28.
  • FIG. 4 shows a schematic plan view of a set according to the invention.
  • At least one shrink film 1 covers a plurality of different prosthetic teeth 2 and a frame 40 in which a plurality of compartments for the prosthetic teeth 2 are contained.
  • the reference numeral of the at least one shrink film 1 is directed only to the shrink film 1 within the compartments of the frame 40, as hide at this point no other objects, so no denture teeth 2 and no frame 40, under the at least one shrink film 1.
  • a template or a negative mold could be arranged there.
  • the frame 40 is used to stabilize the set and can be clamped in a computer-controlled 4-axis or 5-axis milling machine as a CAM device to edit the denture teeth 2. Otherwise, the structure corresponds to that of Figures 1 to 3.
  • a negative mold or a stencil to be included in the at least one shrink film 1 and thus secured.
  • FIG. 5 shows a schematic cross-sectional view of a further alternative set according to the invention.
  • the kit comprises a first shrink film 1 that has been thermally shrunk to a pressure differential and has been applied to the surfaces of a plurality of denture teeth 2.
  • the prosthetic teeth 2 have a coronal side 12 and a coronal end 12 (bottom in Figure 5), a basal side 14 and a basal end 14 (in Figure 5, top) and a circumferential tooth neck between the coronal side 12 and the basal side 14 of Denture teeth 2 on.
  • the set comprises a template 46 in the form of a plate with several feedthroughs, in which the prosthetic teeth 2 (of which only one can be seen in the cross-sectional view according to FIG. 5) are arranged.
  • the denture teeth 2 are inserted in the passages in the template 46.
  • a second shrink film 20 is applied over the coronal sides 12 of the prosthetic teeth 2.
  • the two shrink films 1, 20 include the template 46 with the denture teeth therein.
  • the template 46 is made of a dimensionally stable material, such as a not too soft metal, such as brass or steel, but not lead, or of a hard plastic such as PMMA.
  • the template 46 according to FIG. 5 belongs to Set, since it is fixed to the shrink-foils 1, 20 with the prosthetic teeth 2.
  • the template 46 with the passages therein serves to position and hold the prosthetic teeth 2 in a predetermined position and orientation relative to one another.
  • the bushings form a negative of a region of the circumferential tooth neck of the prosthetic teeth 2, so that the prosthetic teeth 2 can be used with the tooth neck flush in the bushings.
  • the position of the denture teeth 2, which differ from one another, is thus uniquely predetermined.
  • the set of fixed denture teeth 2 can be inserted into a computerized milling machine (not shown) and the denture teeth 2 become on the basal side 14 and, if desired, on the coronal side 12 worked with the milling machine.
  • a computerized milling machine not shown
  • the denture teeth 2 become on the basal side 14 and, if desired, on the coronal side 12 worked with the milling machine.
  • the set and in known prefabricated prosthetic teeth 2 whose shape, position and position or orientation can be used as a record, is calculated on the basis of a CAM program in the computer by known methods, at which points basal and possibly also coronal material must be removed from the denture teeth 2.
  • the stabilization and fixation of the prosthetic teeth 2 with the shrink film 1, 20 and the template 46 is so stable that a processing of Prosthetic teeth 2 is possible with a mill, without changing the position and the position of the prosthetic teeth 2 in the device due to the mechanical load.
  • the denture teeth 2 After the denture teeth 2 have been processed, they can be easily removed from the template 46 or the shrink films 1, 20 by loosening the shrink films 1, 20 from the template 46 and glued into a prosthesis base (not shown) for producing a dental prosthesis.
  • the processing of the prosthetic teeth 2 can be carried out on the basis of data previously recorded in the oral cavity of a patient in order to adapt the denture teeth 2 to the oral cavity situation.
  • the denture teeth 2 are especially processed basal.
  • Such methods are known and for details, reference is made to WO 201 1/066 895 A1.
  • the set is removed from the milling machine and the shrink film (s) 1, 20 and optionally the negative mold 6, 26, the frame 40 or the template 46 are separated from the denture teeth.
  • the shrink films 1, 20 can be cut open or torn open.
  • the denture teeth 2 are then isolated and can be used in the denture base.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Dental Prosthetics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un procédé pour la fixation de dents prothétiques (2) préalablement confectionnées et elle concerne de préférence également l'agencement de dents prothétiques (2) préalablement confectionnées. Ce procédé présente les étapes suivantes consistant à positionner plusieurs dents prothétiques (2) préalablement confectionnées et amenées en contact avec au moins un film thermorétractable (1), le ou les films rétractables (1) se rétractant ensuite pour fixer les dents prothétiques (2) dans leur position et selon leur orientation les unes par rapport aux autres. L'invention concerne également un ensemble pour agencer plusieurs dents prothétiques (2) présentant une pluralité de dents prothétiques (2) qui sont fixées, à l'aide d'au moins un film thermorétractable, dans leur position et selon leur orientation les unes par rapport aux autres.
PCT/EP2016/066290 2015-07-08 2016-07-08 Dispositif et procédé pour la fixation de dents prothétiques Ceased WO2017005905A1 (fr)

Applications Claiming Priority (2)

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DE102015111048.2A DE102015111048B4 (de) 2015-07-08 2015-07-08 Vorrichtung und Verfahren zur Halterung von Prothesenzähnen
DE102015111048.2 2015-07-08

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WO2017005905A1 true WO2017005905A1 (fr) 2017-01-12

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PCT/EP2016/066290 Ceased WO2017005905A1 (fr) 2015-07-08 2016-07-08 Dispositif et procédé pour la fixation de dents prothétiques

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WO (1) WO2017005905A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020057872A1 (fr) 2018-09-21 2020-03-26 Kulzer Gmbh Demi-produit pour la fabrication de dents prothétiques et procédé pour sa fabrication et son traitement
EP3845197A1 (fr) 2020-01-03 2021-07-07 Kulzer GmbH Procédé de fabrication d'un rail de guidage destiné au traitement des dents prothétiques
WO2022043201A1 (fr) 2020-08-25 2022-03-03 Kulzer Gmbh Procédé et dispositif de raccourcissement de dents artificielles pour prothèses dentaires

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JPS5962046A (ja) * 1982-09-02 1984-04-09 アイザツク・シヨハ− 歯科コーピング用金属箔
WO2009124869A1 (fr) * 2008-04-11 2009-10-15 Wdt-Wolz-Dental-Technik Gmbh Procédé de fabrication de prothèses dentaires par électrophorèse
WO2012155161A1 (fr) * 2011-05-16 2012-11-22 Amann Girrbach Ag Support de dents prothétiques
WO2015074897A1 (fr) * 2013-11-19 2015-05-28 Heraeus Kulzer Gmbh Procédé et dispositif de maintien de dents prothétiques préfabriquées

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Publication number Priority date Publication date Assignee Title
DE112007003610B4 (de) 2007-08-08 2014-05-22 Kabushiki Kaisha Shofu Verpackungsbehälter für künstliche Zähne
DE102009056752C5 (de) 2009-12-04 2024-04-04 Kulzer Gmbh Herstellung individueller dentaler Prothesen via CAD/CAM und Rapid Manufacturing/Rapid Prototyping aus Daten der digitalen Abdrucknahme
WO2013124452A1 (fr) 2012-02-22 2013-08-29 3Shape A/S Réduction et fraisage virtuels de dents artificielles

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Publication number Priority date Publication date Assignee Title
JPS5962046A (ja) * 1982-09-02 1984-04-09 アイザツク・シヨハ− 歯科コーピング用金属箔
WO2009124869A1 (fr) * 2008-04-11 2009-10-15 Wdt-Wolz-Dental-Technik Gmbh Procédé de fabrication de prothèses dentaires par électrophorèse
WO2012155161A1 (fr) * 2011-05-16 2012-11-22 Amann Girrbach Ag Support de dents prothétiques
WO2015074897A1 (fr) * 2013-11-19 2015-05-28 Heraeus Kulzer Gmbh Procédé et dispositif de maintien de dents prothétiques préfabriquées

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020057872A1 (fr) 2018-09-21 2020-03-26 Kulzer Gmbh Demi-produit pour la fabrication de dents prothétiques et procédé pour sa fabrication et son traitement
DE102018123318A1 (de) * 2018-09-21 2020-03-26 Kulzer Gmbh Vorprodukt zur Herstellung von Prothesenzähnen und Verfahren zu dessen Herstellung und Verarbeitung
EP3845197A1 (fr) 2020-01-03 2021-07-07 Kulzer GmbH Procédé de fabrication d'un rail de guidage destiné au traitement des dents prothétiques
US11826213B2 (en) 2020-01-03 2023-11-28 Kulzer Gmbh Method for producing a guide rail for machining prosthetic teeth
WO2022043201A1 (fr) 2020-08-25 2022-03-03 Kulzer Gmbh Procédé et dispositif de raccourcissement de dents artificielles pour prothèses dentaires
DE102020122214A1 (de) 2020-08-25 2022-03-03 Kulzer Gmbh Verfahren und Vorrichtung zum Kürzen von Prothesenzähnen für Dentalprothesen

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DE102015111048B4 (de) 2024-10-31

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