Patent ID: 7044737

Claim:
A method for oral cleaning and therapy using ultrasound radiation, comprising the steps of: a) providing a plurality of spacers disposed between the upper and lower teeth of a user to separate them with a predetermined separation and expose the chewing surfaces of the teeth; b) providing a plurality of ultrasonic transducers disposed inside the oral cavity of the user with their radiation heads pointing to various predetermined targets with predetermined separations from the targets, said ultrasonic transducers having electrically insulating housings; c) providing a filling means that substantially fills up the oral cavity of the user, leaving a predetermined ultrasound action zone that acoustically exposes the surfaces of the oral cavity desirable to be treated by ultrasound radiation in such a manner that they receive desired amounts of ultrasound radiation; d) providing a cleaning solution that contains necessary cleaning and therapeutic agents, said cleaning solution filling up said ultrasound action zone; e) providing a power generator that is electrically connected to and drives said ultrasonic transducers with predetermined waveforms for predetermined durations; whereby ultrasound radiation produced by said ultrasonic transducers is confined within said ultrasound action zone, whereby each desired part of the oral cavity is cleaned and treated for therapy simultaneously, uniformly, and effectively by precisely predetermined amount of ultrasound radiation, whereby the entire dental surface, including the inter-dental and gingival areas, is cleaned uniformly and effectively.