Dental implant fixture
US5816812A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1994 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Jul 22, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C13/2656
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A self-tapping dental prosthetic implant has a blunt leading end, a tapered first section which has a uniform minor diameter and a uniformly increasing major diameter, a second section having uniform minor and major thread diameters, a third section with a uniform major thread diameter and a outwardly tapering minor diameter and a fourth section which has a diameter larger than any other segment and a relatively low profile (i.e., short axial length). A thread-cutting groove extends over a substantial portion of the threaded length of the implant. A stepped drill with a tip having a large included angle is used to drill a pilot hole permitting anchoring in the proximate and distal portions of cortical bone by the threaded implant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.