<p>Disclosed herein is a dental scaler for removing accumulated deposits from the teeth, having a low manufacturing cost so as to be widely used at home. The dental scaler includes a first casing adapted to serve a grip; a power supply-receiving section and a motor installed at the inside of a first casing serving as a grip, wherein the power supply-receiving section is adapted to contain a power supply device therein and a rotating speed of the motor is adjustable by a first switch. A vibrator is eccentrically installed at a driving shaft of the motor to be selectively in electrical contact with a second switch for connecting or disconnecting a power of an electromagnet. An electromagnet-receiving section is formed at the front end portion of the first casing, for containing the electromagnet therein.</p>
