Electric Toothbrush Mechanism

Electric Toothbrush Mechanism

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Credit: SHEILA TERRY/SCIENCE PHOTO LIBRARY

Caption: Part of the gear and cam mechanism inside an electric rotation-oscillation toothbrush which converts the continuous rotary motion of the motor into a reciprocating to-and-fro motion. With oscillating-rotating technology, the brushhead oscillates at over 7000 brush strokes per minute, at a rotation angle of +/- 38 degrees, describing an arc of 76 degrees. The frequency of brush strokes has been optimized to 8800 oscillations per minute. Research indicates that as a conventional manual toothbrush only generates about 300 strokes per minute, it follows that rotating-oscillating toothbrushes are more efficient in removing plaque.

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Keywords: brush strokes, brushhead, cam, cleaning, dental, electric toothbrush, frequencycariodental, gear, gear and cam mechanism, mechanism, no-one, nobody, oscillation, oscillations, plaque, reciprocating, rotary motion, rotation-oscillation, teeth, tooth, tooth decay, toothbrush

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