Implant surface preparation utilizing acid treatment
AssigneeInnovative Implants, Inc.
InventorKeith D. Beaty
Life of this patent
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Abstract
The surface of a device that is surgically implantable in living bone is prepared. The device is made of titanium with a native oxide layer on the surface. The method of preparation comprises the steps of removing the native oxide layer from the surface of the device and performing further treatment of the surface substantially in the absence of unreacted oxygen.
Claims15
A method of preparing the surface of a device that is surgically implantable in living bone and that is made of titanium having a native oxide layer on the surface thereof, said method comprising the steps of
- grit blasting the surface of said device to roughen the surface,
- etching the grit blasted surface with hydrofluoric acid to remove the native oxide layer, and
- etching the resulting surface with a mixture of sulfuric and hydrochloric acids to produce a uniformly roughened surface.
A method of preparing the surface of a dental implant made of titanium having on the surface thereof a native oxide layer having a thickness between about 70 and about 150 Angstroms, said method comprising the steps of
- removing the native oxide layer from the surface of the implant by immersing the implant in hydrofluoric acid of sufficient strength to etch the native oxide layer at a rate of at least 100 Angstroms per minute,
- removing the implant from the hydrofluoric acid after removal of the native oxide layer, and before re-oxidation of the etched surface, immersing the implant in a mixture of sulfuric acid and hydrochloric acid for about 3 to about 10 minutes to produce a uniformly etched surface.
Dependencies are inferred from the claim text.