| 摘要 |
The invention is directed to a method and an electric toothbrush which includes a timing circuit (7) serving to signal to a user the expiration of a first period (T1), that is, the expiration of the optimum brushing time, following activation of the electric toothbrush. Further, an On/Off switching device (4) is provided which is controllable by the timing circuit (7) and by means of which the electric toothbrush can be turned on and off. The timing circuit (7) controls the On/Off switching go0 device (4) such that following expiration of the first period (T1) the electric toothbrush is turned on and off repeatedly within a second period (T2). As a result, the user of the electric toothbrush "senses" directly the end of the first period (T1), that is, the end of the optimum brushing time, from the variation in the operating mode of the electric toothbrush.
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