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US 5,074,790 AGranted
Screw implant for a jawbone
OwnerErnst Bauerinventor
Life of this patent
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Abstract
A screw implant for a jawbone has a conical threaded implant body with an implant neck and a conical implant post to accept a replacement tooth or a substructure. The thread of the implant body is a compression thread with concave thread turns. The implant neck preferably defines a bending zone wherein the ratio of the diameter D.sub.B to the length L.sub.B of the bending zone is in the range of 1:1.5 to 1:3. The bending angle is up to 30 degrees and the number of bendings of the bending zone is 3 to 4, when the implant post is bent back and forth. The implant neck has broadening transition sections.
Claims13
A screw implant for a jawbone comprising:
- a threaded conical implant body adapted to be screwed into a jawbone;
- and
- an attachment defining an implant neck and a conical implant post to accept a replacement tooth or substructure;
- said implant body comprising a compression thread comprising concave thread turns;
- and
- said compression thread defining an outer boundary cone having an angle of opening .varies..sub.1 and a core having a core angle .varies..sub.2, the ratio .alpha..sub.1 :.alpha..sub.2 being in the range of 1:0.6 to 1:1.
3 more elements
Dependencies are inferred from the claim text.