Artificial tooth
US4957437A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Feb 16, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C8/0068
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An artifical tooth comprises a contacting member formed of a composite material having compatibility with living tissues and diaposed at an outer portion of the artificial tooth to be contacted with alveolar bone, a metal base member having an opening therein and disposed inside of and attached to the contacting member, a metal post inserted into the opening of the metal base member and at least two elastic buffer members disposed in a space between the metal base member and the metal post. The composite material having compatibility with living tissues contains 40 to 95% by weight of a calcium phosphate compound and 60 to 5% by weight of an organic polymer. Each of the elastic buffer members is spaced apart for movably receiving the metal post by which pressure imposed upon the artificial tooth is transmitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.