Method for manufacturing dental restorations
US6648645B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2000 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Mar 7, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2237/341
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A ceramic tape is provided in its green state so that it is malleable and formable to a mold for forming a dental restoration, but will not break or crack as it is applied to the mold. Pressure may be applied to further form or adapt the ceramic tape to the shape of the mold. Heat is applied simultaneously with pressure or in a separate step to achieve high density and strength in the ceramic material. A vacuum atmosphere may be used with the application of pressure and/or heat. One or more layers of surface material such as porcelain or composite resin may be applied to the ceramic to form the dental restoration. The process is useful in the manufacture of dental materials or restorations including but not limited to orthodontic appliances, bridges, space maintainers, tooth replacement appliances, splints, crowns, partial crowns, dentures, posts, teeth, jackets, inlays, onlays, facing, veneers, facets, implants, abutments, cylinders, and connectors.Also provided is a ceramic powder in combination with one or more media materials to form a homogeneous mixture. The mixture may then be used to form a dental restoration as is or may be used to form feedstock such as filaments or wires…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.