Ceramic dental implant

Patent metadata

Field	Value
Publication number	US-10271927-B2
Application number	US-201113228642-A
Country	US
Kind code	B2
Filing date	Sep 9, 2011
Priority date	Nov 30, 2001
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

A dental implant is disclosed comprising an anchoring part for anchoring within a bone and comprising a mounting part for receiving a prosthetic build-up construction, wherein the anchoring part and the mounting part are configured integrally of a material comprising zirconia, wherein at least the anchoring part is treated at its outer surface at least partially by a subtractive, removing process, such as by sand blasting or is provided with a coating which facilitates an ossification.

First claim

The invention claimed is:

1. A one-part dental implant comprising:
an anchoring part for anchoring within bone and having a threaded section with a longitudinal axis; and
a mounting part having a frustoconical or conical shape and lying in an extension of the longitudinal axis of the threaded section of the anchoring part, the mounting part including a flattened portion that has a smaller outer diameter than a remainder of the one-part dental implant, wherein:
the mounting part is configured to receive an element selected from the group consisting of a crown, a bridge, and a prosthesis;
an upper end of the anchoring part transitions via an enlarged conical section into the mounting part, the enlarged conical section having a larger outer diameter than a remainder of the one-part dental implant;
the anchoring part and the mounting part are integrally made of a material based on zirconia;
the anchoring part at its outer surface is at least partially roughened; and
the one-part dental implant facilitates osteogensis with the bone.

2. The dental implant of claim 1 , wherein the mounting part has a groove at the side opposite the flattened portion.

3. The dental implant of claim 2 , wherein the groove extends from an upper front surface of the mounting part toward a lower side and ends at the enlarged conical section.

4. The dental implant of claim 1 , wherein the anchoring part has an abrasively blasted outer surface.

5. The dental implant of claim 1 , wherein the anchoring part has a sand blasted outer surface.

6. The dental implant of claim 1 , wherein the anchoring part has an etched outer surface.

7. The dental implant of claim 1 , wherein the anchoring part has an abrasively blasted and subsequently etched outer surface.

8. The dental implant of claim 6 , wherein the anchoring part has a surface etched with an etchant comprising at least one component selected from the group consisting, of phosphoric acid, sulphuric acid, hydrochloric acid, and mixtures thereof.

9. The dental implant of claim 6 , wherein the anchoring part has a surface etched with phosphoric acid of 10 to 50 vol. %.

10. The dental implant of claim 1 , wherein an outer surface of the anchoring section is silanated.

11. The dental implant of claim 1 , wherein an outer surface of the anchoring section is hydroxylated.

12. The dental implant of claim 1 , wherein the anchoring part and the mounting part are integrally made of 92.1 to 93.5% by weight ZrO 2 , 4.5 to 5.5% by weight Y 2 O 3 , and 1.8 to 2.2% by weight HfO 2 .

13. The dental implant of claim 1 , wherein at least the threaded section of the anchoring section has a maximum surface roughness between 4 and 20 micrometers.

14. The dental implant of claim 1 , wherein at least the threaded section of the anchoring section has a maximum surface roughness between 4 and 12 micrometers.

Assignees

• Gahlert Michael
• Straumann Holding Ag

Inventors

• Gahlert Michael

Classifications

• A61C8/0022

  Self-screwing (A61C8/0028 takes precedence) · CPC title

• A61C8/0013

  with a surface layer, coating · CPC title

• A61C2008/0046

  Textured surface, e.g. roughness, microstructure (A61C8/0013 takes precedence) · CPC title

• A61C8/0069

  tapered or conical connection · CPC title

• A61C8/0012 Primary

  characterised by the material or composition, e.g. ceramics, surface layer, metal alloy (use of specific materials A61K6/00) · CPC title