Self-guiding flosser

A flosser includes a frame (2) having a pair of tines (42) mounted on it for supporting a span of floss (62). At least one of pair the tines is pivotally supported for moving toward and away from the other of the pair of tines. Gear-driven capstans (24, 26) are provided for reciprocating the span of floss longitudinally between the tines, while a cam (9) and cam follower (11) act on a lever (32) for reciprocating the tines vertically. A spring (48) urges the tines to move laterally apart to an open position. Each of a pair of engaged sector gears (46) is fixed to a respective tine so that lateral movement of the tines is symmetrical. The spring is adjustable so that when the moving floss span encounters tooth resistance, floss tension increases to overcome the spring force and move the tines toward a closed position. The bulbs (50), which contain rollers (54), are mounted to swivel so the floss span can move in any direction. Thus, the span can wrap around a tooth and reciprocate laterally and vertically thereabout.