Body made of a ceramic material

Patent metadata

Field	Value
Publication number	US-9649407-B2
Application number	US-201214124627-A
Country	US
Kind code	B2
Filing date	Jun 22, 2012
Priority date	Jun 24, 2011
Publication date	May 16, 2017
Grant date	May 16, 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 calcium 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 comprising zirconia; wherein
the body is an implant and comprises as an integral part thereof a surface region reaching from the surface of the body down to a predetermined depth,
the surface region of the body is enriched with a calcium component thereby forming a hydrophilic surface area,
the surface region reaches down to a depth of 1 μm at most,
the ceramic material in the surface region comprises a calcium containing crystalline phase, where the crystalline phase is a Ca—Zr—O containing phase, 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 calcium component is integrated in the ceramic material of the surface region.

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

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

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

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

7. The implant system according to claim 1 , wherein the ceramic material comprises yttria-stabilized zirconia.

8. The implant system according to claim 1 , wherein the Ca—Zr—O containing phase is selected from the group consisting of: a CaO—ZrO 2 phase, a monoclinic CaZr 4 O 9 phase, a cubic CaZrO 3 phase, and an orthorhombic CaZrO 3 phase.

9. 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, said surface roughness being increased with respect to a non-treated surface area of the hydrophilic surface area.

10. The implant system according to claim 1 , wherein
the implant system is a one-part dental implant system, and
the implant is a dental implant.

11. The implant system according to claim 1 , wherein
the implant is a dental implant, and
the implant system is a two-part dental implant system that further comprises an abutment for the dental implant.

12. The implant system according to claim 1 , wherein
the implant system is a one-part dental implant system, and
the implant is a dental implant comprising:
an anchoring part configured to be anchored in the bone, and
a mounting part configured to be a base for the direct or indirect attachment of a suprastructure selected from the group consisting of a crown or a bridge.

13. The implant system according to claim 1 , wherein
the implant system is a two-part dental implant system;
the implant is a dental implant; and
the two-part dental implant system further comprises an abutment configured to serve as mounting part for the dental implant and serves to connect the dental implant that is anchored in the bone to a suprastructure selected from the group consisting of a crown or a bridge; wherein
the abutment is made of a ceramic material comprising zirconia,
the abutment comprising as an integral part thereof a surface region reaching from the surface of the abutment down to a predetermined depth, wherein
the surface region of the abutment is enriched with a calcium component thereby forming a hydrophilic surface area,
the surface region reaches down to a depth of 1 μm at most, and
the ceramic material in the surface region comprises a calcium containing crystalline phase, where the crystalline phase is a Ca—Zr—O containing phase.

14. The implant system according to claim 1 , wherein the surface region reaches down to a depth of 500 nm at most.

15. The implant system according to claim 1 , wherein the surface region reaches down to a depth of 200 nm at most.

16. The implant system according to claim 1 , wherein the hydrophilic surface area is defined by a contact angle of less than 30°.

17. The implant system according to claim 1 , wherein the hydrophilic surface area is defined by a contact angle of less than 10°.

18. An implant system in contact with a soft tissue, the implant system comprising:
a body made of a ceramic material comprising zirconia; wherein
the body is an implant and comprises as an integral part thereof a surface region reaching from the surface of the body down to a predetermined depth,
the surface region of the body is enriched with a calcium component thereby forming a hydrophilic surface area,
the surface region reaches down to a depth of 1 μm at most,
the ceramic material in the surface region comprises a calcium containing crystalline phase, where the crystalline phase is a Ca—Zr—O containing and
the hydrophilic surface area is formed at least on the portion of the body in direct contact with the soft tissue.

19. The implant system according to claim 18 , wherein the hydrophilic surface area is formed on the entire surface of the body.

20. The implant system according to claim 18 , wherein the surface region reaches down to a depth of 500 nm at most.

21. The implant system according to claim 18 , wherein the hydrophilic surface area is defined by a contact angle of less than 90°.

22. The implant system according to claim 18 , wherein
the implant system is a two-part dental implant system;
the implant is a dental implant; and
the two-part dental implant system further comprises an abutment configured to serve as mounting part for the dental implant and serves to connect the dental implant that is anchored in a bone to a suprastructure selected from the group consisting of a crown or a bridge; wherein
the abutment is made of a ceramic material comprising zirconia,
the abutment comprising as an integral part thereof a surface region reaching from the surface of the abutment down to a predetermined depth, wherein
the surface region of the abutment is enriched with a calcium component thereby forming a hydrophilic surface area,
the surface region reaches down to a depth of 1 μm at most, and
the ceramic material in the surface region comprises a calcium containing crystalline phase, where the crystalline phase is a Ca—Zr—O containing phase.

Assignees

• Berner Simon
• Bibus Joachim
• Bieli Heiner
• Kounga Alain
• Straumann Holding Ag

Inventors

• Berner Simon
• Bibus Joachim
• Bieli Heiner
• Kounga Alain

Classifications

• A61L27/30 Primary

  Inorganic materials · CPC title

• A61L27/50

  Materials characterised by their function or physical properties {, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials} · CPC title

• C04B41/4556

  coating or impregnating with a product reacting with the substrate, e.g. generating a metal coating by surface reduction of a ceramic substrate · CPC title

• C04B2235/75

  Products with a concentration gradient · CPC title

• C04B41/85

  with inorganic materials · CPC title