Shaded zirconia ceramics
US8173562B2 · kind B2 · utility
9Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2008 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Sep 11, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9661
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to compositions based on Ce-stabilized ZrO2, and single- and multi-colored blanks made from oxide ceramics, and a process for their preparation, in which oxide ceramic powder is coated with a coloring substance, the coated powders are preferably graded and at least one colored powder is filled into a compression mould, the colored powder or powders are compressed to produce a shaped body, and the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations. The compositions exhibit high fracture toughness and high flexural strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.