Dental materials with nano-sized silica particles
US6899948B2 · kind B2 · utility
88Cited by
145References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2002 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Jun 16, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dental material comprising a hardenable resin and silica particles dispersed within the hardenable resin, wherein the silica particles have an average diameter of less than about 200 nm and are present in an amount greater than about 40 wt % of the weight of the dental material. The dental material may further comprise a heavy metal oxide. The dental material can be used as dental adhesives, artificial crowns, anterior or posterior fillings, casting materials, cavity liners, cements, coating compositions, mill blanks, orthodontic devices, restoratives, prostheses, and sealants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.