| 摘要 |
In an electric toothbrush having a body forming a handle containing a drive, an arm and a head which extend in prolongation of that arm and which are provided with a brush including a circular plate of clumps of bristles and which is driven in rotation about an orthogonal axis by a motion transmission device coupled to a motor shaft driven by the drive, the circular plate has a central region having a first predetermined number of clumps of bristles whose free ends are located in a same plane P1, a peripheral region 16 having a second predetermined number of clumps of bristles whose free ends 18 are located within the plane P1 and a plane P2 located below the plane P1, as well as an intermediate region with a third predetermined number of clumps of bristles whose free ends are located in the plane P2.
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