Threaded dental anchor
US4917606A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 9, 1988 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | May 9, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C5/35
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A self-threading dental anchor for insertion into a blind channel extending from an excavated surface of a tooth, the channel having a tapered seat portion of predetermined degrees, the dental anchor including an upper retention section to provide retention of a superstructure formed on the tooth, and a lower anchoring section connected thereto for engagement in the tooth channel to threadingly anchor the dental anchor to the tooth, the anchoring section having a helical buttress-type thread thereon. The buttress-type thread has a substantially planar lower surface facing towards a distal insertion end of the anchoring section, and an angled upper surface tapering inwardly towards the upper retention section to provide a crest therebetween, the crest having a knife-like cutting edge. The distal insertion end of the anchoring section is tapered to provide a slope thereon equal to the predetermined degrees of the tapered seat portion of the tooth channel to provide a mating angled configuration therebetween. Preferably, a depth-limiting stop member is disposed between the retention section and the anchoring section. The retention section can have a variety of different configurations…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.