Ceramic slurry composition for ceramic core of a dental prosthesis
US5975905A · kind A · utility
Inventors
Key dates
| Filing date | Feb 4, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Feb 4, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/80
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An improved method for simplifying a slip casting applied conventional all ceramic core molding process by molding an all ceramic core from a ceramic sheet. In the method, there is prepared a slurry which consists mainly of alumina, spinel, alumina/zirconia powder, by adding thereto a dispersant, a binding agent, a plasticizer, a solvent and the like. The slurry is formed into a sheet having a thickness of 0.1 mm to 1.0 mm for thereby fabricating a tooth molding mass by using a heat hydrostatic pressing at a pressure of 15 Kgf/cm.sup.2 to 150 Kgf/cm.sup.2 at a temperature of 50.degree. C. to 110.degree. C., with slurry composition for fabricating an all ceramic jacket crown applicable to an artificial crown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.