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An electric toothbrush having a handle with a cavity therein, a motor mounted in the cavity of the handle and having a rotatable shaft, a brush head, and a shaft arranged to connect the brush head to the handle. An eccentric weight is mounted to the motor shaft so as to rotate eccentrically when the

An electric toothbrush having a handle with a cavity therein, a motor mounted in the cavity of the handle and having a rotatable shaft, a brush head, and a shaft arranged to connect the brush head to the handle. An eccentric weight is mounted to the motor shaft so as to rotate eccentrically when the motor shaft rotates so that the brush handle vibrates. A further weight is mounted to the shaft so as to be axially movable by a manipulator for adjusting vibration of the brush head.

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An electric toothbrush, comprising: a handle having a cavity therein; a motor mounted in the cavity of the handle and having a rotatable motor shaft; a brush head; an elongated connecting shaft having a first end to which the brush head is connected, and a second end connected to the handle; a weigh

An electric toothbrush, comprising: a handle having a cavity therein; a motor mounted in the cavity of the handle and having a rotatable motor shaft; a brush head; an elongated connecting shaft having a first end to which the brush head is connected, and a second end connected to the handle; a weight eccentrically mounted on the motor shaft with respect to the motor shaft axis so as to rotate eccentrically when the motor shaft rotates so that the brush head vibrates; a second weight mounted to the connecting shaft so as to be axially movable; and manipulator means for moving the second weight.