Electric toothbrush
An object is to provide an electric toothbrush superior in plaque removal, producible at low costs, and utilized without damaging gum even by a patient with gingivitis. In the electric toothbrush ( 10 ) making brushing possible by linearly moving a tufted portion ( 31 ), the product of the distance...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | An object is to provide an electric toothbrush superior in plaque removal, producible at low costs, and utilized without damaging gum even by a patient with gingivitis. In the electric toothbrush ( 10 ) making brushing possible by linearly moving a tufted portion ( 31 ), the product of the distance (mm) of movement of the tufted portion ( 31 ) and the frequency (times) of back-and-forth motion per minute is set in the range of 3000-9000. Further, the distance ((x) mm) of movement of the tufted portion ( 32 ) and the frequency ((y) times) of back-and-forth motion per minute are set in a range which satisfies the following formula: y=ax+b, where a=-3000, 10000 |
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