| 摘要 |
Hand-operated instrument for dental care or tooth treatment having an electric drive, including a hand-grip portion, a slender instrument neck portion having one end integral with the hand-grip portion and a free end, a drive motor of the electric drive and a fluid reservoir disposed in the hand-grip portion, a working implement integral with the free end of the neck portion, means including a fluid duct at least partially disposed in the neck portion for supplying fluid from the reservoir to the working implement, and means including drive elements at least partially disposed in the neck portion and being driven by the drive motor for driving the working implement.
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