Device and method for holding prosthetic teeth

Patent metadata

Field	Value
Publication number	US-10537412-B2
Application number	US-201615561863-A
Country	US
Kind code	B2
Filing date	Apr 19, 2016
Priority date	Apr 23, 2015
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

The invention relates to a device for holding prosthetic teeth (2), the device comprising a negative form (1) and at least one clamping unit (6), wherein in the negative form (1), recesses (4) for holding coronal sides (12) of the prosthetic teeth (2) are provided, wherein the recesses (4) are formed in such a manner that the prosthetic teeth (2) can be inserted in an unequivocally position and orientation into the recesses (4), wherein the at least one clamping unit (6) is affixable or is affixed to the negative form (1) with a connecting means (10), and wherein the at least one clamping unit (6) has at least one elastic holding means (8), wherein with the at least one elastic holding means (8), an elastic force is exercisable or is exerted from at least two different directions onto the prosthetic teeth (2) inserted into the negative form (1), while the at least one clamping unit (6) is affixed to the negative form (1), so that the prosthetic teeth (2) are affixed in the device. The invention also relates to a method for affixing, and preferably processing, prosthetic teeth (2) and a set for implementing such a method, having several prefabricated prosthetic teeth (2) and at least one such device.

First claim

The invention claimed is:

1. A device for holding prosthetic teeth ( 2 ), the device comprising a negative form and at least one clamping unit, wherein
recesses for holding coronal sides of the prosthetic teeth are provided in the negative form, wherein the recesses are formed in such a manner that the prosthetic teeth can be inserted in an unequivocal position and orientation into the recesses, wherein
the at least one clamping unit is affixable or is affixed to the negative form with a connecting means, and wherein the at least one clamping unit has at least one elastic holding means, wherein with the at least one elastic holding means, an elastic force is exercisable or is exerted from at least two different directions onto the prosthetic teeth inserted into the negative form, while the at least one clamping unit is affixed to the negative form, such that the prosthetic teeth are affixed in the device.

2. The device according to claim 1 , wherein the at least one clamping unit is affixable on a side of the negative form in which the recesses are arranged.

3. The device according to claim 1 , wherein the recesses form negatives of coronal ends of the prosthetic teeth.

4. The device according to claim 1 , wherein the negative form has an even surface, in which the recesses are arranged.

5. The device according to claim 1 , wherein the device has several prosthetic teeth, wherein the prosthetic teeth are inserted in the recesses and are affixed with the at least one clamping unit on the negative form.

6. The device according to claim 1 , wherein the connecting means comprises at least one pin, at least one bore hole, at least one plug-in connection, at least one groove, at least one tongue, at least one bracket, at least one clamp, at least one threaded rod, at least one screw, at least one threaded bore, at least one latching means, at least one push button, or at least one adhesive, or a combination of these means, with which the at least one clamping unit is affixable or is affixed to the negative form.

7. The device according to claim 1 , wherein the negative form is a single part.

8. The device according to claim 1 , wherein the at least one clamping unit is multi-part, and on the parts of the at least one clamping unit, fastening means are provided via which the parts are to be affixed to each other.

9. The device according to claim 1 , wherein the at least one elastic holding means is a non-plastically deformable material.

10. The device according to claim 1 , wherein the at least one elastic holding means is at least one metal strip.

11. The device according to claim 1 , wherein the basal ends of the prosthetic teeth affixed in the device protrude from the composite device.

12. The device according to claim 1 , wherein the recesses are of such a depth that they extend up to a maximum of a beginning of undercut zones of the prosthetic teeth.

13. The device according to claim 1 , wherein in each recess, at least one through-connection is provided, through which an underpressure is producible in the recess.

14. The device according to claim 1 , wherein the at least one holding means of the at least one clamping unit is applied to tooth necks of the prosthetic teeth.

15. The device according to claim 1 , wherein a sum of the elastic forces of the at least one holding means applied onto the prosthetic teeth presses the prosthetic teeth in a direction of the recesses of the negative form.

16. A method for affixing, and optionally for processing, prosthetic teeth with a device according to claim 1 , the method having the following method steps:
inserting several prosthetic teeth into recesses of the negative form,
subsequently, applying at least one clamping unit to the inserted prosthetic teeth, wherein the at least one elastic holding means of the at least one clamping unit is applied on at least two directions on tooth necks of the prosthetic teeth, and
affixing the at least one clamping unit on the negative form, so that an elastic force of the at least one elastic holding means acts on the prosthetic teeth from at least two directions, wherein the prosthetic teeth are affixed against the negative form as a result.

17. The method according to claim 16 , wherein when the at least one clamping unit is applied, the at least one holding means encloses the prosthetic teeth on their tooth necks at least in sections, wherein inner areas of the at least one holding means fit at least in sections in an engaging manner to sections of outer areas of the prosthetic teeth.

18. The method according to claim 16 , comprising applying the at least one clamping unit to the prosthetic teeth in such a manner that basal ends of the prosthetic teeth protrude.

19. The method according to claim 16 , comprising affixing the at least one clamping unit and the negative form with the prosthetic teeth affixed in it in a defined position in a holder of a CAM device for removing material of the prosthetic teeth with a CAM method, and processing at least one basal end of at least one prosthetic tooth in a computer-controlled manner using the CAM device.

20. The method according to claim 16 , wherein outer forms of all pre-fabricated prosthetic teeth used are present as a first data set, and a second data set defines precise positions of all affixed pre-fabricated prosthetic teeth in the negative form, comprising conducting a subsequent processing at least of one prosthetic tooth on the basis of the first and second data set.

21. The method according to claim 16 , wherein all pre-fabricated prosthetic teeth can only be inserted in one specified position and orientation respectively into the negative form, and can be affixed with the at least one clamping unit.

22. The method according to claim 16 , comprising before inserting the prosthetic teeth into the negative form, applying a bonding agent to a surface of the recesses and/or to a surface of coronal sides of the prosthetic teeth.

23. A set for implementing a method for affixing, and optionally for processing, prosthetic teeth, the set having several pre-fabricated prosthetic teeth and at least one device according to claim 1 .

24. The set according to claim 23 , wherein the set additionally contains a first data set on an outer form of all pre-fabricated prosthetic teeth, and a second data set on a position of the pre-fabricated prosthetic teeth in a composite device.

25. The device according to claim 4 , wherein the negative form has a standing side or arrangement area opposite the even surface.

26. The device according to claim 25 , wherein the negative form is a plate.

27. The device according to claim 9 , wherein the at least one elastic holding means is a non-plastically deformable material with an elasticity modulus of at least 0.2 GPa.

28. The device according to claim 27 , wherein the at least one elastic holding means is a non-plastically deformable material with an elasticity modulus of 0.2 GPa to 6 GPa.

29. The device according to claim 10 , wherein the at least one elastic holding means is at least one strip made of spring steel.

30. The device according to claim 29 , wherein synthetic coatings are provided on the surfaces of the holding means pointing towards the prosthetic teeth.

31. The method according to claim 19 , wherein the CAM device is a computer-controlled

Assignees

• Kulzer & Co Gmbh

Inventors

• Woldegergis Yohannes

Classifications

• B25B1/06

  Arrangements for positively actuating jaws · CPC title

• A61C13/12 Primary

  Tools for fastening artificial teeth; Holders, clamps, or stands for artificial teeth {(A61C8/0089 takes precedence)} · CPC title

• B25B5/06

  Arrangements for positively actuating jaws · CPC title

• B25B1/20

  Vices for clamping work of special profile, e.g. pipes · CPC title

• B25B5/14

  Clamps for work of special profile {(using chains or strips B25B1/205)} · CPC title