Dentsply Research & Development Corp.

George H Warrin

Richard H Paschke

Rene J Perdreaux

Emery Rose

Alfred E Corbellini

Huy-Can Dao

Harvey B Foulkes

Edward W Lee

Vidan Jovanovic

The invention provides a method of operating a dental scalar system having a vibrating scaling tip by continuously monitoring the amplitude and frequency of vibration of the tip which provides scaling power to a tooth in a patient's mouth. The amplitude and frequency of vibration of the tip is continuously adjusted to maintain a substantially constant scaling power. Preferably, the insert is vibrated at its resonant frequency and the system provides a substantially constant tip motion while the user varies the applied pressure between the tip and the tooth.

Method of continuous control of tip vibration in a dental scalar system

A transducer activated subgingival tool for contacting subgingival tooth surfaces and directing a fluid adjacent to said surfaces, wherein the tool has an activated tip having a fluid inlet end, a subgingival outlet end, a step in the surface of the outer wall of said tip between said inlet end and said subgingival outlet end, and a fluid passageway wall internal to the tip. The passageway wall is formed in the inlet end generally along the longitudinal center axis of the inlet end of the tip. In a preferred embodiment of the invention, the step intersects the passageway wall at the orifice edge.

Transducer activated subgingival tool tip

Growing community of inventors

North Merrick, NY, United States of America

George H Warrin