Dentistry – Apparatus – Tool bit
Patent
1990-11-02
1993-01-12
O'Connoir, Cary E.
Dentistry
Apparatus
Tool bit
433125, A61C 306
Patent
active
051785382
ABSTRACT:
An improved prophylactic cup device (10, 100) comprised of a prophylactic cup (12, 102) mounted on a mounting screw (14, 104) is described. In the preferred embodiment, the prophylactic cup is molded from a silicone polymer containing a dental cleaning and polishing agent such as pumice and is mounted onto a circular cross-sectioned mounting screw comprised of a shaft (14a) with a threaded portion (14c) and a head (14b). The head provides for cylindrical inlet or channel portions (14g) and (14h), and retaining slots (14i) and (14j). Since silicone polymers are poorly adherent to any surface and because the strength of silicone polymers is greatly reduced by the addition of pumice, the channels and retaining slots increase the contact surface area between the prophylactic cup and the mounting screw. This allows the prophylactic cup device to be mounted on a dental handpiece and to be used to clean teeth and gingival crevices without a dental paste. A prophylactic cup device (110) and a dental handpiece (112) comprising a disposable unit are also shown.
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Lucchesi Nicholas D.
McLeod Ian C.
O'Connoir Cary E.
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