Dental instruments

Details Dental instruments Dental instruments

1988-11-14

1990-01-23

Peshock, Robert

Dentistry

Apparatus

Tool bit

A61C 300

Patent

active

048955159

ABSTRACT:
A dental instrument for cleaning and planing of tooth root faces comprises a conical or flattened working part, in which one or more countersunk grooves are cut out. Opposed side faces of said grooves form a sharp, essentially square-angled cutting edge with area of the working part situated on either side of the groove. When the deposits upon the tooth have been removed and the tooth face planed, said areas form load-relieving surfaces resting against the tooth face and preventing the cutting edges from coming into contact with and undesirably working off further undamaged tooth material.

REFERENCES:
patent: 1712469 (1929-05-01), Force
patent: 3552022 (1971-01-01), Axelsson
patent: 4505678 (1985-03-01), Anderson
patent: 4773855 (1988-09-01), Levy

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