A motorized flosser comprising an elongated body and a flossing head secured to an end portion of the elongated body. The flossing head oscillates in an arcuate manner. A battery powered motor drives a drive mechanism which reciprocates an output drive shaft, which drive shaft is in turn connected through a flexible drive rod to a drive disc. The drive disc oscillates in a rotary arcuate motion to impart either pure rotary arcuate oscillatory motion or a combined rotary arcuate motion and translatory motion to flossing material carried by a yoke of the flossing head. The flossing head may incorporate a toothpaste holder mounted upon the flossing head or toothbrush bristles mounted upon tines of the yoke of the flossing head.