Deposition of discrete nanoparticles on an implant surface
First Claim
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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 produce a microscale roughened surface; and
depositing discrete nanoparticles directly on the roughened surface though a one-step process of exposing the roughened surface to a solution including the nanoparticles, the nanoparticles comprising a material having a property that promotes osseointegration, wherein the act of depositing discrete nanoparticles results in deposition covering less than all of the roughened surface such that a portion of the roughened surface is exposed between at least some of the discrete nanoparticles.
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Abstract
A method of forming an implant to be implanted into living bone is disclosed. The method comprises the act of roughening at least a portion of the implant surface to produce a roughened surface. The method further comprises the act of depositing discrete nanoparticles on the roughened surface though a one-step process of exposing the roughened surface to a solution. The nanoparticles comprise a material having a property that promotes osseointegration.
242 Citations
42 Claims
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1. A method of forming an implant to be implanted into living bone, the method comprising the acts of:
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roughening at least a portion of the implant surface to produce a microscale roughened surface; and depositing discrete nanoparticles directly on the roughened surface though a one-step process of exposing the roughened surface to a solution including the nanoparticles, the nanoparticles comprising a material having a property that promotes osseointegration, wherein the act of depositing discrete nanoparticles results in deposition covering less than all of the roughened surface such that a portion of the roughened surface is exposed between at least some of the discrete nanoparticles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of forming an implant to be implanted into living bone, the method comprising the acts of:
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roughening at least a portion of the implant surface to produce a microscale roughened surface; and depositing discrete nanoparticles directly on the roughened surface though a one-step process of exposing the roughened surface to a solution including the nanoparticles and a 2-methoxyethanol solvent, the nanoparticles comprising a material having a property that promotes osseointegration, the nanoparticles including hydroxyapatite, wherein the act of depositing discrete nanoparticles results in deposition covering less than all of the roughened surface. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method of forming a dental implant made of a titanium or titanium alloy, the method comprising the acts of:
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etching at least a threaded bottom portion of the implant to remove a native oxide layer; after the etching, forming a roughened surface on the threaded bottom portion by use of an acid etching process, the roughened surface having an array of microscale irregularities having peak-to-valley heights not greater than about 20 microns; and without pretreating the roughened surface, depositing discrete hydroxyapatite nanocrystals directly on the roughened surface by exposure to a solution comprising 2-methoxyethanol solvent and the hydroxyapatite nanocrystals, wherein the act of depositing discrete hydroxyapatite nanocrystals results in deposition covering less than all of the roughened surface. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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- 35. A method of forming an implant to be implanted into living bone, the method comprising the act of depositing discrete nanoparticles directly on the surface of the implant though a one-step process of exposing the surface to a solution, the nanoparticles comprising a material having a property that promotes osseointegration, wherein the act of depositing discrete nanoparticles results in deposition covering less than all of the surface of the implant such that a portion of the surface is exposed between at least some of the discrete nanoparticles.
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38. A method of forming an implant to be implanted into living bone, the method comprising the acts of:
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providing an implant; depositing discrete nanoparticles directly on the surface of the implant though a one-step process of exposing the surface to a solution, the nanoparticles comprising a material having a property that promotes osseointegration; rinsing the implant; and drying the implant, wherein the act of depositing discrete nanoparticles results in deposition covering less than all of the surface of the implant such that a portion of the surface of the implant is exposed between at least some of the discrete nanoparticles.
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39. A method of forming a dental implant made of a titanium or titanium alloy, the method comprising the acts of:
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etching at least a threaded bottom portion of the implant to remove a native oxide layer; acid etching the threaded bottom portion to form a roughened surface having microscale irregularities having peak-to-valley heights not greater than about 20 microns; and without pretreating the roughened surface, depositing discrete hydroxyapatite nanocrystals directly on the roughened surface by exposure to a solution comprising 2-methoxyethanol solvent and the hydroxyapatite nanocrystals, wherein the act of depositing discrete hydroxyapatite nanocrystals results in deposition covering less than all of the roughened surface of the implant. - View Dependent Claims (40, 41)
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42. A method of forming an implant to be implanted into living bone, the method comprising the acts of:
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roughening at least a portion of the implant surface to produce a microscale roughened surface; and depositing discrete nanoparticles directly on the roughened surface though a one-step process of exposing the roughened surface to a solution including the nanoparticles, the nanoparticles comprising a material having a property that promotes osseointegration, wherein the act of depositing discrete nanoparticles results in deposition covering less than all of the roughened surface, wherein the implant is made from a material including ceramic.
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Specification