Claims
- 1. A method of producing a uniformly roughened surface on Ti 6/4 alloy for contact with living bone comprising:
(a) removing the native oxide from said Ti 6/4 alloy to expose metal; (b) contacting said exposed metal with an aqueous solution of hydrofluoric acid and hydrochloric acid for a suitable period of time to create the desired surface topography.
- 2. A method of claim 1 wherein said desired surface topography is a roughened surface having irregularities with peak-to-valley heights of less than 10 microns.
- 3. A method of claim 1, wherein roughened surface has peak-to-peak distances of about 1-3 μm.
- 4. A method of claim 1, wherein said native oxide is removed by contacting said Ti 6/4 alloy with an aqueous solution of hydrofluoric acid for a suitable period of time.
- 5. A method of claim 4 wherein said aqueous solution contains about 7.9 to 9.0 wt % hydrofluoric acid.
- 6. A method of claim 5 wherein said aqueous solution contains about 0.005 to 1.0 wt % hydrofluoric acid and about 10 to 30 wt % hydrochloric acid.
- 7. A method of claim 6 wherein said aqueous solution contains about 0.0845 wt % hydrofluoric acid and about 20 wt % hydrochloric acid.
- 8. A method of producing a uniformly roughened surface on Ti 6/4 alloy for contact with living bone comprising:
(a) removing the native oxide from said Ti 6/4 alloy to expose metal by contacting said alloy with an aqueous solution of hydrofluoric acid for a suitable period of time; (b) rinsing said alloy after said native oxide removal of (a); (c) contacting said exposed metal in an aqueous solution of hydrofluoric acid and hydrochloric acid at room temperature for a suitable period of time to create the desired surface topography; (d) rinsing the surface produced in step (c) to remove the residual aqueous solution of (c).
- 9. A method of claim 8 wherein said aqueous solution of step (a) contains about 7.9 to 9.0 wt % hydrofluoric acid.
- 10. A method of claim 9 wherein said aqueous solution of step (a) contains about 8.45 wt % hydrofluoric acid.
- 11. A method of claim 8 wherein said aqueous solution of step (c) contains about 0.005 to 1.0 wt % hydrofluoric acid and about 10 to 30 wt % hydrochloric acid.
- 12. A method of claim 11 wherein said aqueous solution of step (c) contains about 0.053 to 0.105 wt % hydrofluoric acid and about 19 to 21 wt % hydrochloric acid.
- 13. A method of claim 12 wherein said aqueous solution of step (c) contains about 0.0845 wt % hydrofluoric acid and about 20 wt % hydrochloric acid.
- 14. A dental implant of Ti 6/4 alloy for contact with living bone comprising:
a. a head section for mounting dental prosthesis components; b. a threaded section for engaging said living bone; c. a neck section disposed between said head section and said threaded section; wherein at least a portion of said threaded section has a desired roughened surface topography created by etching said threaded portion with an aqueous solution of hydrofluoric acid and hydrochloric acid.
- 15. A dental implant of claim 14 wherein native oxide is removed from said threaded portion prior to said etching with an aqueous solution of hydrofluoric acid and hydrochloric acid.
- 16. A dental implant of claim 15 wherein said native oxide is removed by contacting said threaded portion with an aqueous solution of hydrofluoric acid.
- 17. A dental implant of claim 16 wherein said aqueous solution contains about 7.9 to 9.0 wt % hydrofluoric acid.
- 18. A dental implant of claim 14 wherein said aqueous solution contains about 0.005 to 1.0 wt % hydrofluoric acid and about 10 to 30 wt % hydrochloric acid.
- 19. A dental implant of claim 18 wherein said aqueous solution contains about 0.0845 wt % hydrofluoric acid and about 20 wt % hydrochloric acid.
- 20. A method of producing a uniformly roughened surface of Ti 6/4 alloy for contact with living bone comprising:
a. removing the native oxide from said Ti 6/4 alloy to produce an exposed metal surface; and b. etching said exposed metal surface with Keller's Solution to create the desired surface topography.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority of provisional patent application 60/471,463, filed May 16, 2003.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60471463 |
May 2003 |
US |