Artificial dental root
US5205745A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1991 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Jun 11, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C8/0022
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to an artificial ceramic dental root, wherein the outer circumference portion of the main body of the artificial dental root which has been implanted in the jaw bone is integrally formed of ceramic material; the diameter of a dental neck-corresponding portion of the artificial dental root extending from a part inserted into the top of the jaw bone to at least a part of the dental neck is made larger than that of a base; and a tapered portion is provided between said base and the dental neck-corresponding portion, whereby stress concentration is relieved and the artificial dental root is obtained which is highly resistant to outer forces, especially a force in an oblique direction. Even when a ceramic coated layer is layered over a metallic core to form a layer structure, the ceramic layer is prevented from coming off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.