Implant surface with increased hydrophilicity
View Patent ↗A method of increasing the hydrophilicity of an implant to be implanted into living bone. The method comprises the act of depositing non-toxic salt residuals on the surface of the implant by exposing the surface to a solution including the non-toxic salts. The method further comprises the act of drying the implant.
1. A method of forming an implant to be implanted into living bone, the method comprising the acts of:
roughening at least a portion of the implant surface to form a roughened surface; and
increasing the hydrophilicity of the roughened surface by depositing at least one non-toxic salt residual on the roughened surface, the at least one non-toxic salt residual including sodium lactate.
2. The method of claim 1 , further comprising, prior to the act of roughening, grit blasting at least a portion of the implant surface with a grit blast media.
3. The method of claim 2 , wherein the grit blast media is a resorbable grit blast media.
4. The method of claim 3 , wherein the resorbable grit blast media includes calcium phosphate.
5. A dental implant comprising:
a head portion having a non-rotational feature;
a lowermost end opposing the head portion; and
a threaded bottom portion for engaging bone between the head portion and the lowermost end, the threaded bottom portion having a roughened surface with an array of microscale irregularities, the threaded bottom portion further including at least one non-toxic salt residual located on the roughened surface, the at least one non-toxic salt residual including sodium lactate.
6. The implant of claim 5 , wherein the implant is made of a metal selected from the group consisting of titanium and titanium alloys.
7. The dental implant of claim 5 , wherein the microscale irregularities have peak-to-valley heights not greater than about 20 microns.
8. The dental implant of claim 5 , wherein the at least one non-toxic salt residual is configured to increase the hydrophilicity of the roughened surface.
9. The dental implant of claim 5 , wherein the roughened surface further includes discrete nanoparticles comprising a material having a property that promotes osseointegration.
10. The dental implant of claim 9 , wherein the nanoparticles are hydroxyapatite nanocrystals.
11. The dental implant of claim 5 , wherein a contact angle formed by a deionized water droplet on the surface of the implant ranges from about 5° to about 65°.
12. The dental implant of claim 5 , wherein the roughened surface is a grit blasted surface.
13. A dental implant comprising:
a head portion having a non-rotational feature;
a lowermost end opposing the head portion; and
a threaded bottom portion for engaging bone between the head portion and the lowermost end, the threaded bottom portion having a roughened surface with an array of microscale irregularities, the threaded bottom portion further including discrete non-toxic salt residuals located on the roughened surface, the discrete non-toxic salt residuals including sodium lactate.
14. The dental implant of claim 13 , wherein the implant is made of titanium or titanium alloy.
15. The dental implant of claim 13 , wherein the microscale irregularities have peak-to-valley heights not greater than about 20 microns.
16. The dental implant of claim 13 , wherein the discrete non-toxic salt residuals are configured to increase the hydrophilicity of the roughened surface.
17. The dental implant of claim 13 , wherein the roughened surface further includes discrete nanoparticles comprising a material having a property that promotes osseointegration.
18. The dental implant of claim 17 , wherein the nanoparticles are hydroxyapatite nanocrystals.
19. The dental implant of claim 13 , wherein a contact angle formed by a deionized water droplet on the surface of the implant ranges from about 5° to about 65°.
20. The dental implant of claim 13 , wherein the roughened surface is a grit blasted surface.