DENTAL BLANK WITH AN INSERT

Abstract

A dental blank for the manufacture of a dental restoration. The dental blank comprises a dental block and an insert with an opening facing toward an outer surface of the dental blank. The insert comprises at least one positioning element for the positioning of an abutment.

Claims

1. A dental blank for the manufacturing of a dental restoration comprising: a dental block, and an insert with an opening facing towards an outer surface of the dental blank. wherein the insert comprises at least one positioning element for the positioning of an abutment.

2. The dental blank according to claim 1, wherein the insert is configured to receive an abutment essentially by form-locking.

3. The dental blank according to claim 1, wherein the insert has a translucency of <5%.

4. The dental blank according to claim 1, wherein the insert comprises or is made of ceramic or composite.

5. The dental blank according to claim 1, wherein the insert is integrally attached with the dental block.

6. The dental blank according to claim 1, wherein the insert is affixed in the dental block by a fastening material.

7. The dental blank according to claim 1, wherein the material of the dental block is made from composite material.

8. The dental blank according to claim 7, wherein the material of the dental block has a translucency of 10%-40%.

9. The dental blank according to claim 1, wherein the insert does not extend over an outer surface of the dental block.

10. The dental blank according to claim 1, wherein a support element, preferably a holder for placement in a CAD/CAM machine, is attached to a surface of the dental blank.

11. The dental blank according to claim 1, wherein an access path for a fastening element is located within tho dental blank the access path has an opening facing towards the outer surface of the dental blank, wherein the access path is configured to fasten a dental restoration made from the dental blank to an abutment by use of a fastening element.

12. The dental blank according to claim 11, wherein the opening of the path and the opening of the insert are on opposing faces of the dental blank.

13. A dental restoration made from a dental blank according to claim 1.

14. A method for production of a dental blank comprising a dental block and an insert comprising the step of affixing the insert in the dental block.

15. A method of producing an insert for use in the dental blank according to claim 1, wherein the insert is produced by an injection molding process.

16. The method according to claim 14, wherein the insert is produced by an injection molding process.

17. The method of producing an insert for use in the dental blank according to claim 1, wherein the insert is produced by an injection molding process, and, subsequent sintering.

18. The method of producing the dental blank according to claim 14, wherein the insert is produced by an injection molding process, and subsequent sintering.

Description

[0052] The invention will be further outlined in the following reference to preferred embodiments with examples and drawings, without being limited thereto.

[0053] FIG. 1: shows a schematic drawing of a dental blank according to the present invention.

[0054] FIG. 2: shows a sectional view along the axis X-X of the dental blank in FIG. 1.

[0055] FIG. 3: shows a top view on the B surface of the dental blank from FIG. 2.

[0056] FIG. 4: shows a sectional view of the dental blank with contour of a dental restoration.

[0057] FIG. 5: shows a prosthetic implant with a dental restoration made from a dental blank according to the invention.

[0058] FIG. 1 shows a dental blank 1 according to the invention. The dental blank 1 has the shape of a cube with the dimensions 1.61.61.6 cm. The dental blank 1 comprises a dental block 2 and has an outer surface A with an opening 3 providing access to an access path (not shown). The dental blank 1 has a further outer surface B.

[0059] FIG. 2 shows a sectional view of the dental blank 1 along the X-X axis from FIG. 1. The opening 3 is facing towards the outer surface A. The opening 3 gives access to an access path 5. A further opening 6 of an insert 4 is facing towards the outer surface B. The insert 4 is designed as a sleeve and is in linear progression with the access path 5. The insert is made of ceramic. The opening 3 of the access path 5 and the opening 6 of the insert 4 are on opposing faces A and B of the dental blank.

[0060] FIG. 3 provides a top view on the outer surface B. The opening 6 is in the center of the dental block 2. The insert 4 is affixed to the dental block 2. The insert 4 does not extend over the outer surface B of the dental block 2. The insert 4 comprises a recess 7 that can interact with a protrusion in an abutment (not shown).

[0061] FIG. 4 shows the sectional view of FIG. 2 with a contour of dental restoration 8. The dental restoration will be obtained by milling of the dental blank.

[0062] FIG. 5 shows an implanted device 12 with a dental restoration 8 according to the invention obtained from a dental blank 1 by milling. A fixture 10 is secured in the jawbone 11. An abutment 9 connects the fixture 10 with the dental restoration 8. The abutment 9 is fully surrounded by the insert 4. The opening 3 of the access path 5 provides access for fastening means such as a screw (not shown). The screw may fasten the fixture 10, the abutment 9 and the dental restoration 8 together. The access path 5 may than be closed by filling and sealing material known in the art.