Dental implant having a topographic surface
AssigneeStraumann Holding AG
InventorsFrank Homann, Philippe Habersetzer
Life of this patent
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Abstract
A dental implant having a surface made of a ceramic material. At least a part of the surface includes recesses and cavities formed by removal of discrete grains having an average grain size from 0.1 μm to 0.6 μm and/or agglomerates of these grains from the ceramic material.
Claims14
A dental implant comprising a body having a surface made of a ceramic material comprising yttria-stabilized zirconia, at least a part of said surface comprising:
- a macroscopic roughness formed by a mechanical process and/or injection molding, and
- recesses and cavities formed by removal of discrete grains having an average grain size from 0.1 μm to 0.6 μm and/or agglomerates of these grains from the ceramic material, wherein the recesses and cavities are formed in the surface by etching at least a part of the surface with an etching solution comprising hydrofluoric acid at a temperature of at least 70° C., and
- wherein the surface has a topography having a Core Roughness Depth Sk of less than 1 μm.
A dental implant comprising a body having a surface made of a ceramic material comprising yttria-stabilized zirconia, at least a part of said surface comprising:
- a macroscopic roughness formed by a mechanical process and/or injection molding, and
- recesses and cavities formed by removal of discrete grains having an average grain size from 0.1 μm to 0.6 μm and/or agglomerates of these grains from the ceramic material, wherein the recesses and cavities are formed in the surface by etching at least a part of the surface with an etching solution comprising hydrofluoric acid at a temperature of at least 70° C., and
- wherein the surface has a topography having a negative Skewness Ssk.
A dental implant comprising a body having a surface made of yttria-stabilized zirconia, at least a part of the surface including:
- a macroscopic roughness formed by a mechanical process and/or injection molding, and
- recesses and cavities formed by removal of discrete grains having an average grain size in a range of from 0.1 μm to 0.6 μm and/or agglomerates thereof from the yttria-stabilized zirconia, the at least part of the surface having a topography having a Core Roughness Depth Sk in a range of from 0.4 μm to less than 1 μm, and a negative Skewness Ssk.
Dependencies are inferred from the claim text.