Body made of ceramic material

Patent metadata

Field	Value
Publication number	US-9724274-B2
Application number	US-201214124542-A
Country	US
Kind code	B2
Filing date	Jun 22, 2012
Priority date	Jun 24, 2011
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

Body made of a ceramic material, the body having as an integral part thereof a surface region reaching from the surface of the body down to a predetermined depth. According to the invention, the surface region is enriched with a magnesium component thereby forming a hydrophilic surface area.

First claim

The invention claimed is:

1. An implant system in contact with a bone, the implant system comprising a body made of a ceramic material, wherein
the body comprises as an integral part thereof a surface region reaching from a surface of the body down to a predetermined depth;
the surface region is enriched with a magnesium component thereby forming a hydrophilic surface area; and
the hydrophilic surface area is formed at least on the portion of the body in direct contact with the bone.

2. The implant system according to claim 1 , wherein the magnesium component is integrated in the ceramic material of the surface region.

3. The implant system according to claim 1 , wherein the magnesium component is magnesium ions or magnesium oxide.

4. The implant system according to claim 1 , wherein the surface region reaches down to a depth of 10 μm at most.

5. The implant system according to claim 1 , wherein the proportion of the magnesium component increases continuously from the predetermined depth towards the surface of the body.

6. The implant system according to claim 1 , wherein the hydrophilic surface area is defined by a contact angle of less than 90°.

7. The implant system according to claim 1 , wherein the body is a dental implant.

8. The implant system according to claim 1 , wherein the hydrophilic surface area is formed on an entire surface of the body.

9. The implant system according to claim 1 , wherein the ceramic material comprises zirconia.

10. The implant system according to claim 9 , wherein the ceramic material comprises yttria-stabilized zirconia.

11. The implant system according to claim 1 , wherein at least a part of the hydrophilic surface area has a surface roughness obtainable by a surface roughness treatment.

12. An implant system in contact with a soft tissue, the implant system comprising a body made of ceramic material, wherein
the body comprises as an integral part thereof a surface region reaching from a surface of the body down to a predetermined depth;
the surface region is enriched with a magnesium component thereby forming a hydrophilic surface area; and
the hydrophilic surface area is formed at least on the portion of the body in direct contact with the soft tissue.

13. The implant system according to claim 12 , wherein the magnesium component is integrated in the ceramic material of the surface region.

14. The implant system according to claim 12 , wherein the surface region reaches down to a depth of 10 μm at most.

15. A method for producing the implant system according to claim 1 , said method comprising
a) applying at least one magnesium compound selected from the group consisting of a magnesium salt, magnesium oxide, magnesium hydroxide, metallic magnesium and a magnesium containing gel onto the surface of a basic ceramic body, and
b) thermally treating the basic ceramic body with the magnesium compound applied thereon at a temperature higher than 200° C., whereby a magnesium component based on the magnesium compound diffuses into the ceramic material.

16. The method according to claim 15 , wherein the magnesium compound of step a) is selected from the group consisting of MgCO 3 , Mg(NO 3 ) 2 , MgCl 2 , MgSO 4 , Mg-acetate, and combinations thereof.

17. The method according to claim 15 , wherein after step b) residual magnesium compound is removed from the surface of the body by rinsing with a liquid, air streaming, brushing acid washing or polishing.

18. The method according to claim 17 , wherein the liquid used for rinsing is pure water or an aqueous solution.

Assignees

• Berner Simon
• Straumann Holding Ag

Inventors

• Berner Simon

Classifications

• A61K6/818 Primary

  comprising zirconium oxide · CPC title

• A61L27/10 Primary

  Ceramics or glasses · CPC title

• A61L27/306

  Other specific inorganic materials not covered by A61L27/303 - A61L27/32 · CPC title

• A61L2430/12

  for dental implants or prostheses · CPC title

• A61C8/0012

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