This results in considerably cleaner, plaque free teeth and prevents gum disease and bone loss. An ultrasonic plaque removal device for removing plaque from teeth comprising: a) a toothbrush device having a hollow grip portion and a brush portion extending from and being separable from said brush portion, said toothbrush device having a central axis extending through said brush portion and said grip portion; b) first means located within said grip portion for creating a rotational vibration of said toothbrush device about said central axis; and. An ultrasonic plaque removal device as in claim 6 in which said switch means comprises a manually operable element mounted on the outside of said grip portion and movable between on and off positions, and an electrical connector means in said circuit means and adapted to move and close said circuit when said manually operable element is in its on position. The liquid or gel surrounding the teeth will respond to the ultrasonic energy by vibrating and producing cavitation, assisting in the loosening of the plaque and helping to carry it away from the teeth. 8. The combination of brush vibration and the propagation of ultrasonic waves in the mouth is considerably more efficient at removing plaque than brushing alone, or brushing and flossing. The combination of brush vibration and ultrasound loosens and removes plaque from the teeth. 
Devices of this type are primarily dentist's tools and cannot be used at home. 4 is a diagrammatic pictorial block diagram illustrating the internal components of this invention; and.
4.
No. The ultrasonic energy coupled into the brush portion 14 serves to soften or remove plaque from the teeth as the wave is propagated in the mouth. Contained within the hollow center of handle 12 is an electric motor 28 to which is attached an eccentrically mounted member 30 via a rotatable shaft 32. The outside case 22 of handle 12 is preferably of strong plastic to withstand hard use and being dropped on a bathroom floor. 7. Ultrasonics has also been applied to the cleaning of teeth. 
1. No. While the invention has been described with respect to preferred embodiments thereof, it is apparent that changes can be made to the structure and arrangement of its elements without departing from the scope of the invention as hereinafter claimed. The ultrasonic waves are not focused and are general to the entire region about the brush in which the standing wave is produced. Many prior art devices use ultrasound to remove plaque from teeth.
3. No. The combined action of the rotational vibration and the ultrasonic waves will be far more effective than brushing alone, or brushing combined with flossing, in loosening and removing plaque from teeth. It is therefore an object of this invention to produce a unique plaque removal device which comprises a vibrating toothbrush in combination with the generation and propagation of ultrasonic waves along the brush portion of the toothbrush. It provides considerable advantages over brushing with a standard or even an electric toothbrush because the vibrations of the brush combined with the generation of the ultrasonic waves loosens the plaque in places that are normally not reached by standard toothbrushes.
Other prior art devices utilizing ultrasonics are U.S. Pat. When foods containing sugars and starches are eaten, the bacteria in plaque produces acids which attack tooth enamel.
The present invention provides a unique plaque removal device consisting of a toothbrush having an electric motor in the handle thereof causing rotation of an eccentric member which produces rotational vibration of the entire toothbrush. 
An ultrasonic plaque removal device as in claim 7 in which said grip means has a removable end portion at the end opposite the said brush portion for providing access to said battery. 
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DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE, Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle, Power-driven cleaning or polishing devices, Power-driven cleaning or polishing devices using ultrasonics, Features not otherwise provided for using batteries, PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362, Skin vibration method for topical targeted delivery of beneficial agents into hair follicles, Cleaning process which uses ultrasonic waves, Ultrasonic cleaning products comprising cleaning composition having dissolved gas, Reciprocally vibrating apparatus for interproximal plaque removal, Garment stain removal product which uses sonic or ultrasonic waves, Methods and apparatus for removal of wrinkles from fabrics, Torque lock for ultrasonic swivelable inserts and method, Replaceable head electric toothbrush and connection structure therefor, Toothbrush with severable electrical connections, Ultrasound oral hygiene and therapeutic device, Vacuum cleaner nozzle including mechanical beater and sonic beater, Oral hygiene devices employing an acoustic waveguide, Article and method for controlling oral-originated systemic disease, Apparatus for cleaning teeth using a variable frequency ultrasound, Ultrasonic manipulator of dental floss and method for operating the same, Compositions and methods for dental applications involving zinc-oxide cements, Mechanically-driven, sonic toothbrush system, Electronic toothbrush with vibration dampening, Oral health care implement and system with oximetry sensor, Mechanically-driven, sonic toothbrush and water flosser, Oral cleansing device with energy conservation, Brushing device with illumination features, Removable brush-head for ultrasonic toothbrush, Two part ultrasonic swivel insert, with one part rotatable relative to the other, Toothbrush employing an acoustic waveguide, Vacuum cleaner nozzle including mechanical beater sonic beater, Ultrasonic toothbrushes employing an acoustic waveguide, Oral cleansing device with removable base, Toothbrush with fluid directing drive assembly, Brush tip with motion transfer and securing engagement structures, Oral cleansing device with rotatable fluid connector, Light diffuser for oral cleansing devices, Method and apparatus for ultrasonic cleaning of teeth, Orbitally vibrating apparatus for interproximal plaque removal, Orbitally vibrating method and apparatus for interproximal plaque removal, Sonic dental plaque remover and associated method, Management Tool for Tooth and Teethridge using Supersonic Waves, UlTRASONOGRAPHY UTILIZATION REMOVABLE INTERDENTAL BRUSH, Portable ultrasonic dental cleaning device, Lapse for failure to pay maintenance fees, Lapsed due to failure to pay maintenance fee, Information on status: patent discontinuation.