An embodiment of a dental flosser (10) includes a power driver (12) drivingly connectable to a flossing attachment (11). The flossing attachment includes a movably supported floss span (24) coming from a floss supply (26). A take-up spool (64) is positioned proximate to a floss-supporting tine (16) for winding used floss while fresh floss continually replaces the floss span. A cam (68) on the spool engages the tine to reciprocate the floss span for interdental cleaning. A brushing attachment (72) includes a resilient disk-shaped lingual brush (75) on a shaft (74). Opposite the lingual brush on the shaft is a resilient cup-shaped buccal brush (84). A spring (83) is positioned to urge the buccal brush to slide toward the lingual brush to engage and clean user teeth between the brushes. A brush lock (77) enables the brushes to be held apart for rinsing and air drying.
