Non-rotational prosthodontic restoration
US5108288A · kind A · utility
Inventor
Key dates
| Filing date | Jun 14, 1991 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Jun 14, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C8/0054
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental prosthodontic restoration includes at least one implant fixture adapted to be implanted in a jawbone of a patient. The implant fixture has a threaded bore axially disposed therethrough and opening centrally through its gingival end. In one embodiment, the restoration includes a standard abutment having an abutment base having a fitting at its inferior end, a socket at its superior end, and a bore axially disposed through the base and opening centrally through the fitting and the socket. The abutment base is supported on the implant fixture, preferably in a non-rotational manner. The restoration further includes an abutment screw having an externally-threaded shaft for mating with the threaded bore of the implant fixture, a male fitting at its superior end having a polygonal cross-section, and a secondary bore opening through the superior end coaxial with and extending toward the shaft. Preferably, a locking sleeve is provided and has an outer periphery formed in a predetermined shape for mating with the superior socket of the abutment base. A bore is axially disposed through the sleeve and has the same polygonal cross-section as the male fitting at the superior end of the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.