Shaded zirconium oxide articles and methods
US8178012B1 · kind B1 · utility
28Cited by
12References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2007 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Jul 7, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9661
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A dental article includes yttria stabilized tetragonal zirconia polycrystalline ceramic, and no more than about 0.15 wt. % of one or more coloring agents of one or more of: Pr, Tb, Cr, Nd, Co, oxides thereof, and combinations thereof, whereby the dental article is provided with a color corresponding to a natural tooth shade; and wherein the dental article has a flexural strength of at least about 800 MPa. Corresponding methods are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.