J Bolt

Details J Bolt J Bolt

1981-07-09

1982-12-07

Peshock, Robert

Dentistry

Method or material for testing, treating, restoring, or...

Crown

A61C 508

Patent

active

043625118

ABSTRACT:
A threaded device is provided which can be screwed into the tooth root of a broken tooth to aid in the attachment of a crown or similar prosthesis. The threaded device has a head which is in the shape of a spherical segment of less than a hemisphere which holds a retention ring, a shim, and in some embodiments a coping dish whereby the device of the present invention can be screwed into a threaded hole in the tooth, a dental cement applied thereto and a crown or other prosthesis applied over the head of the bolt and retention ring. In a preferred embodiment of the invention, the retention ring is in the form of a spherical segment which is complementary to the spherical segment of the head to provide a complete spherical head.

REFERENCES:
patent: 2691219 (1954-10-01), Sandri

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