Claims
- 1. A cobalt-chromium dental alloy comprising:
about 60 to about 85% cobalt; about 15 to about 30% chromium; about 2 to about 20% manganese; and about 1 to about 15% aluminum, indium, gallium, tin, or germanium, or mixture thereof.
- 2. The cobalt-chromium alloy of claim 1 wherein aluminum is present in an amount of at least about 2%.
- 3. The cobalt-chromium dental alloy of claim 1 further comprising:
up to about 20% iron, nickel, palladium, or platinum, or mixture thereof; up to about 10% gold; up to about 15% tantalum, niobium, molybdenum, tungsten, or vanadium or mixture thereof; up to about 6% iridium, ruthenium, rhenium, titanium, silicon, or copper or mixture thereof; and up to about 5% zirconium, hafnium, boron, yttrium, or a rare earth metal or mixture thereof.
- 4. The cobalt-chromium dental alloy of claim 1 having a coefficient of thermal expansion from about 15 to about 18×10−6/° C. at about room temperature to about 500° C.
- 5. The cobalt-chromium dental alloy of claim 1 having a Vickers Hardness of no greater than about 300 HV5.
- 6. A dental restoration comprising the cobalt-chromium alloy of claim 1.
- 7. The dental restoration of claim 6 further comprising a high-expansion porcelain on the cobalt-chromium alloy.
- 8. The dental restoration of claim 6 wherein the dental restoration comprises a crown, bridge, space maintainer, tooth replacement appliance, orthodontic retainer, denture, post, jacket, inlay, onlay, facing, veneer, facet, implant, abutment, splint, partial crown, teeth, cylinder, pin, connector or combination thereof.
- 9. A cobalt-chromium dental alloy comprising:
about 65 to about 80% cobalt; about 18 to about 25% chromium; about 2 to about 10% manganese; about 2 to about 10%, iron, nickel, palladium, or platinum, or mixture thereof; about 1 to about 7% aluminum, indium, gallium, tin, or germanium, or mixture thereof; about 1 to about 5% gold; and about 0.1 to about 3% iridium, ruthenium, rhenium, titanium, silicon, or copper, or mixture thereof.
- 10. The cobalt-chromium dental alloy of claim 9 further comprising:
up to about 5% tantalum, niobium, molybdenum, tungsten, or vanadium, or mixture thereof; and up to about 1% zirconium, hafnium, boron, yttrium, or a rare earth metal, or mixture thereof.
- 11. The cobalt-chromium dental alloy of claim 9 having a coefficient of thermal expansion from about 15 to about 18×10−6/° C. at about room temperature to about 500° C.
- 12. The cobalt-chromium dental alloy of claim 9 having a Vickers Hardness of no greater than about 300 HV5.
- 13. A dental restoration comprising the cobalt-chromium alloy of claim 9.
- 14. The dental restoration of claim 13 further comprising a high-expansion porcelain on the cobalt-chromium alloy.
- 15. The dental restoration of claim 13 wherein the dental restoration comprises a crown, bridge, space maintainer, tooth replacement appliance, orthodontic retainer, denture, post, jacket, inlay, onlay, facing, veneer, facet, implant, abutment, splint, partial crown, teeth, cylinder, pin, connector or combination thereof.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This is application claims priority to U.S. Provisional Application No. 60/224,306 filed Aug. 10, 2000 and U.S. Provisional Application No. 60/275,539 filed March 13, 2001 which are incorporated herein by reference.
Provisional Applications (2)
|
Number |
Date |
Country |
|
60224306 |
Aug 2000 |
US |
|
60275539 |
Mar 2001 |
US |