Dental prophylaxis cup

Details Dental prophylaxis cup Dental prophylaxis cup

1999-07-07

2000-11-14

Wilson, John J.

Dentistry

Apparatus

Tool bit

A61C 306

Patent

active

061461407

ABSTRACT:
A prophylaxis cup is provided which has a lower portion and an upper portion. The lower portion of the cup is adapted to mount the cup to a driven member of a prophylaxis angle. The upper portion of the cup includes a wall having an inner surface and an outer surface. The inner surface is smooth and uninterrupted and defines a cavity having a floor and which receives prophylaxis paste. A central post extends up from the cavity floor. A continuous, uninterrupted, circumferential flange extends inwardly from a top of the wall's inner surface. A sloped working surface extends between the flange inner edge and the wall outer surface. The cup is pre-formed to define a flare or annular wedge at the outer edge of the working surface which is sized to permit the working surface to clean a tooth subgingivally and interproximally. A generally circular groove on the working surface helps hold the prophy paste. The groove spirals outwardly.

REFERENCES:
patent: 2017881 (1935-10-01), Wiseman
patent: 2093006 (1937-09-01), Chott
patent: 2135933 (1938-11-01), Blair
patent: 2226145 (1940-12-01), Smith
patent: 2738528 (1956-03-01), Fridge, Sr.
patent: 2789352 (1957-04-01), Wiseman
patent: 3163934 (1965-01-01), Wiseman
patent: 3599333 (1971-08-01), Muhler
patent: 4259071 (1981-03-01), Warden et al.
patent: 4854870 (1989-08-01), Kofod
patent: 4929180 (1990-05-01), Moreschini
patent: 5360339 (1994-11-01), Rosenburg
patent: 5797744 (1998-08-01), Rosenburg

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