Dental prophy cup

Details Dental prophy cup Dental prophy cup

1993-02-05

1994-05-31

Wilson, John J.

Dentistry

Apparatus

Tool bit

A61C 306

Patent

active

053164750

ABSTRACT:
A dental prophy cup includes an elastically flexible rim which includes a flexure region of reduced thickness. The rim thickness increases to a region of maximum thickness at a location forwardly of the flexure region and then tapers downwardly toward a front end of the rim. A forwardly facing surface of the cup which contacts the tooth surface comprises two convex surface portions joined by a radiused bridge surface portion located at the flexure region. Abrasive particles are distributed within the body of the cup and are released as the base material of the cup breaks down.

REFERENCES:
patent: 2789352 (1957-04-01), Wiseman
patent: 3472045 (1969-10-01), Nelsen et al.
patent: 3478433 (1969-11-01), Richmond
patent: 4259071 (1981-03-01), Warden et al.
patent: 5083922 (1992-01-01), Yale

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