Denture and method of producing a denture

Patent metadata

Field	Value
Publication number	US-10182893-B2
Application number	US-201314365138-A
Country	US
Kind code	B2
Filing date	Dec 17, 2013
Priority date	Dec 17, 2012
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

The invention relates to a denture, made of teeth, in particular prefabricated teeth, and of a denture base made of a gingival material, comprising cavities for teeth in which cavities for the teeth are mounted, in particular attached by bonding, characterized in that the denture base (12) is produced by a CAD/CAM process forming the cavities (20) for the teeth (14), and in that cervical areas (40a) of the teeth (14) extending through the basal surface (16, 18) of the denture base (12) are removed, in particular abraded or milled.

First claim

The invention claimed is:

1. A semi-finished denture comprising
prefabricated teeth, and
a denture base made of a gingival material,
wherein the denture base comprises cavities configured for receiving the the prefabricated teeth,
wherein the prefabricated teeth have cervical areas, and
wherein the prefabricated teeth are mounted in and attached to the cavities by adhesive bonding,
wherein one or more cervical areas of the prefabricated teeth extend through a basal surface of the denture base after the prefabricated teeth are adhesively bonded, wherein the prefabricated teeth are mounted in and attached to the cavities by an adhesive in an unshortened manner regarding the masticating surface of the denture base.

2. The semi-finished denture according to claim 1 ,
wherein the teeth, after having been attached to the cavity of the denture base, are shortened, in such a manner that the basal surface of the denture ends flush with the basal surface of the tooth.

3. The semi-finished denture according to claim 1 ,
wherein at least one tooth of the denture is held in the associated cavity of the denture base exclusively in the cervical circumference, and
wherein the basal surface of the at least one tooth is exposed.

4. The denture according to claim 3 ,
wherein at least one tooth of the denture is held in by gluing, polymerizing, snapping or screwing the denture into the associated cavity.

5. The denture according to claim 1 ,
wherein the position of height of each tooth is determined by a position calculated by the CAD/CAM software, with regard to the chewing surfaces of molars and premolars or the cutting edges of anterior teeth, and
wherein a prefabricated tooth extends through the denture, predefined by the position of height.

6. The denture according to claim 1 ,
wherein each tooth is positioned spatially at the position calculated by the CAD/CAM software and
wherein the cavities for the teeth are each produced in a manner fitting the teeth in the denture base.

7. The denture according to claim 1 ,
wherein an exposed cervical area of a denture tooth is surrounded by the basal surface of the denture at the basal surface of the denture tooth and is machined, and
wherein the exposed area produced extends flush with the basal surface of the denture.

8. The denture according to claim 7 ,
wherein machined comprises milling or abrading.

9. The denture according to claim 1 ,
wherein at least one tooth extends through the denture at least partially and is abraded or milled in the area of penetration according to the layout of the basal surface of the denture.

10. The denture according to claim 1 ,
wherein the cavities for receiving the teeth are formed without undercuts from the masticating side of the denture base, by CAD/CAM milling.

11. The denture according to claim 1 ,
wherein the basal surfaces of the teeth are provided with a coating, at least partially on exposed areas, which coating extends at least partially from the basal surface of the tooth to the surrounding basal surface of the denture.

12. The denture according to claim 11 ,
wherein the coating comprises varnish.

13. The denture according to claim 1 ,
wherein at least one cavity for receiving a tooth comprises an excess receiving space at the cavity base in which excess glue in the adhesive gap between cavity and tooth is receivable.

14. The denture according to claim 1 ,
wherein the teeth comprise prefabricated teeth and wherein the cervical areas of the teeth are removed by abrading or milling.

Assignees

• Ivoclar Vivadent Ag

Inventors

• Baaske Thomas
• Hagenbuch Konrad
• Frei Christian
• Heinz Markus
• Watzke Ronny

Classifications

• Y10T29/49567

  Dental appliance making · CPC title

• A61C19/045

  for recording mandibular movement, e.g. face bows · CPC title

• A61C13/12

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

• A61C13/1016

  Methods or apparatus for mounting, holding or positioning a set of teeth · CPC title

• A61C13/01

  Palates or other bases or supports for the artificial teeth; Making same · CPC title