An electric toothbrush comprising a handle and a movable head with respect to said handle, and provided with a rotating work element having at least one brush, said work element being located outside the geometric axis of said handle, said Electric toothbrush also an electric motor to drive the work element with a rotation movement in a clockwise or counterclockwise direction, and having a motor rotation direction switch, functionally coupled with the head and the handle, the head with the handle by means of a rotating coupling, and the work element being mounted on the head and located outside the axis of rotation of the head with respect to the handle, in which the head and the handle are coupled with resilient technical means, characterized in that said means (10), (19) resilient technicians allow - after exerting torque on the head (2) - rotate the head (2), (15) with res with respect to the handle (1) towards the left or right position, in which position the motor rotation direction switch starts the motor (5), (25) in the direction of rotation clockwise or counterclockwise, and after release of said pair, said resilient technical means (10), (19) allow keeping the head (2), (15) in a waiting position with respect to the handle (1), in which position the motor rotation direction switch coupled with the head (2), (15) and with the handle (1) turn off the engine (5), (25).Un cepillo de dientes eléctrico que comprende un mango y un cabezal móvil con respecto a dicho mango, y provisto de un elemento rotatorio de trabajo que tiene al menos un cepillo, estando situado dicho elemento de trabajo fuera del eje geométrico de dicho mango, teniendo dicho cepillo de dientes eléctrico además un motor eléctrico para accionar el elemento de trabajo con un movimiento de rotación en un sentido horario o antihorario, y que tiene un conmutador de sentido de rotación del motor, acoplado funcionalmente con el cabezal y el mango, estando unido el cabezal con el mango mediante un acop
