PURPOSE: To provide the functions and merits of an electronic toothbrush and an electrically driven toothbrush and add a threadtoothpick function and a dampproof and waterproof switch and provide a good contact between the toothbrush body and a battery charger.

CONSTITUTION: The minus electrode of an electrically driven toothbrush is provided in the toothbrush side 2, 3 and the plus electrode 6 is provided in the electrically driven toothbrush body 1 grasped by a hand and fine electric currents are conducted. In this way, impurities on the teeth are easily removed from the teeth. A planted brush with a thread-toothpick function is added thereto to remove impurities between the teeth. A magnet-sensitive switch is used as a waterproof and dampproof type by interposition of a shelter. The electrode in the grasped body is made so as to be easily fixed and provide a good electric contact by making use of magnetic force or the like of the battery charger in order to obtain a good electrical contact for charging between the battery charger and the electronic electrically driven tooth brush.