Claims
- 1. A dental product comprising a lithium disilicate glass ceramic comprising the following components:ComponentWt. %SiO257.0 to 80.0 Al2O30 to 5.0La2O30.1 to 6.0 MgO0 to 5.0ZnO0 to 8.0K2O 0 to 13.5Li2O11.0 to 19.0 P2O5 0 to 11.0Color components0 to 8.0Additional components0 to 6.0whereinAl2O3 + La2O3 equals 0.1 to 7.0 wt. % andMgO + ZnO equals 0.1 to 9.0 wt. %.
- 2. The dental product according to claim 1, wherein the dental product is translucent.
- 3. The dental product according to claim 1, wherein the dental product has the color of a natural tooth.
- 4. The dental product according to claim 1, wherein the dental product has a bending strength of 200 to 400 MPa.
- 5. The dental product according to claim 1, wherein the dental product has an acid resistance below 75 μg/cm2.
- 6. The dental product according to claim 1, wherein the dental product has fracture toughness value of 3 to 4.5 MPam0.5.
- 7. The dental product according to claim 1, further comprising a coating.
- 8. The dental product according to claim 7, wherein the coating is a ceramic, a class ceramic, a glass, a glaze, or a composite.
- 9. The dental product according to claim 1, wherein the dental product has a dimensional stability at up to 900° C.
- 10. The dental product according to claim 1, which is an inlay, an onlay, a bridge, a post construction, a veneer, a crown, or a partial crown.
Priority Claims (2)
Number |
Date |
Country |
Kind |
196 35 940 |
Sep 1996 |
DE |
|
196 47 739 |
Nov 1996 |
DE |
|
Parent Case Info
This is a divisional of U.S. patent application Ser. No. 08/924,232 filed Sep. 5, 1997, now U.S. Pat. No. 5,968,856, which claims the benefit of U.S. Provisional Patent Application Serial No. 60/040,827, filed Mar. 20, 1997.
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Provisional Applications (1)
|
Number |
Date |
Country |
|
60/040827 |
Mar 1997 |
US |