| 摘要 |
An electric toothbrush is provided. The electric toothbrush includes a housing, a brush head, and a neck extending between the housing and the brush head. The housing has a hollow interior. A movable bristle carrier is disposed on the brush head. An electric motor is disposed in the hollow interior of the housing, and the motor is operatively connected to the movable bristle carrier to impart a rotating or oscillating motion thereto. A first plurality of tufts are arranged in a first ring of the movable bristle carrier, each of the first plurality of tufts has a plurality of first bristles. A second plurality of tufts is arranged in a second ring inside of the first ring. Each of the second plurality of tufts has a plurality of second bristles, wherein at least some of the second plurality of tufts have a diameter that is greater than a diameter of at least some of the first plurality of tufts.
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