Artificial teeth
US4969817A · kind A · utility
28Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1988 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Sep 30, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C19/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An artificial tooth has a basal plane in which an areal ratio of a labial or buccal subplane to a lingual subplane is in a range of 10:1 to 1:10, and an angle that both subplanes make with a dental axis, i.e., an angle of retention, assumes a concave shape and is in a range equal to or larger than 45.degree. to less than 180.degree.. A retaining hole can be provided in the basal plane of the artificial tooth so as to further improve its performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.