Anchoring member
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United States of America Patent
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-
Dec 14, 1993
Grant Date -
N/A
app pub date -
Aug 27, 1992
filing date -
Aug 27, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A screw-shaped titanium anchoring member for permanent anchorage in bone tissue, specifically permanent anchorage of artificial teeth or tooth bridges in the jaw-bone, comprises at least one cavity located at the forward tip of the screw, the edges of the at least one cavity on the outer threaded cylindrical surface forming cutting tooth with cutting edge to provide self-tapping when the anchoring member is screwed into a bored hole in the bone tissue and the total volume of the at least one cavity being adapted to contain the scraped-off bone tissue material. The anchoring member on the outer cylindrical surface of the cutting tooth, a short distance behind its cutting edge, is provided with a clearance surface defined on the outer surface of the anchoring member, which when seen in a cross-section through the cutting part of the anchoring member, is slightly bevelled a short distance behind the threaded cutting edge.
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