Abstract: Providing the user with a simplified single-procedure approach to self-administered dental-care, achieved through means of a special hand-portable/battery-powered instrument, having a rechargeable-battery and a motor with gear-reduction contained within the handle portion. While preferably detachably-mounted thereto is a special extensile bifurcated structure, provided with lateral adjustability by which to accomodate variations in individual mouth width, while supporting a plurality of motor-driven rotary-brush elements capable of uniformly scrubbing all of the mouth's teeth, away from the gums, inside and out, in a simultaneous single motion fully-automated manner.