Dentistry – Method or material for testing – treating – restoring – or... – Crown
Patent
1988-04-04
1989-07-25
Peshock, Robert
Dentistry
Method or material for testing, treating, restoring, or...
Crown
A61C 506
Patent
active
048508730
ABSTRACT:
In a dental post and coping combination in which the coping is a tubular envelope open at one end, a shoulder around the base of the post which has an annular surface on the locus of a first curvilinear surface, and an annular meeting surface around the open end of the coping which is on the locus of a second shallower curvilinear surface cone, so that when the two parts are assembled the two surfaces meet on the locus of a circle that coincides with the larger periphery of at least one of the two surfaces.
REFERENCES:
patent: 4722688 (1988-02-01), Lonca
patent: 4744756 (1988-05-01), Ross
Beaty Keith D.
Lazzara Richard J.
Implant Innovations, Inc.
Peshock Robert
Rosen Alfred H.
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