Claims
- 1. A tool comprising:a continuous abrasive polycrystalline diamond layer deposited on a portion of the surface of the tool by chemical vapor deposition, the abrasive layer comprising at least one cutting surface; and a protective coating encapsulating the entire abrasive layer; wherein the protective coating is unaffected by the temperature, pressure and solution pH of sterilization process steps; and wherein the protective coating is removable by abrasive forces between the at least one cutting surface and another surface.
- 2. The tool of claim 1, wherein said another surface is a dental surface selected from the group consisting of: a tooth surface, a bone surface, and a ceramic dental crown previously cast and fired.
- 3. The tool of claim 1, wherein said protective coating is from about 10 μm to about 200 μm tick.
- 4. The tool of claim 1 wherein said protective coating comprises a polymer selected from the group consisting of: a polyurethane compound, a derivative of a polyurethane compound, a polyacrylic resin curable by light, and a derivative of an acrylic resin curable by light.
- 5. The tool of claim 4, wherein said protective coating further comprises less than about 40 percent by weight ceramic particles having a particle size of less than about 5 μm.
- 6. The tool of claim 4, wherein said protective coating is formed by a method selected from the group consisting of: dipping said abrasive layer covering said portion of said surface of said tool into an organic solution, and painting said coating over said abrasive layer.
- 7. The tool of claim 1, wherein said protective coating comprises a metal selected from the group consisting of: nickel and nickel alloys thereof, a copper-tin alloy, a copper-tin-titanium alloy, a copper-tin-iron-titanium alloy, copper-tin-cobalt-titanium alloy, and a copper-tin-chromium-titanium alloy.
- 8. The tool of claim 7, wherein said protective coating is formed by suspending fine metal particles in an organic solution, and firing said suspension at a high temperature to provide a continuous, solid metal bearing coating over said abrasive layer.
- 9. The tool of claim 1, wherein said tool is a dental tool.
- 10. The tool of claim 9, wherein said tool has at least one cutting edge.
Parent Case Info
This application claims the benefit of U.S. Provisional Application No.: 60/247,039, filed Nov. 13, 2000.
US Referenced Citations (9)
Non-Patent Literature Citations (1)
Entry |
Borges, C.F.M. etal, “Dental diamond burs made with new technology” Journal of Prosthetic Dentistry, V 82, No. 1, p. 74-79. Orlando, Florida. USA. |
Provisional Applications (1)
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Number |
Date |
Country |
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60/247039 |
Nov 2000 |
US |