The oral b crossaction toothbrush head features a round head design to clean tooth by tooth its crisscross bristles are set at a 16 degree angle to effectively clean along the gumline and reach deep between teeth to lift and power away up to 100 per cent more plaque for a precise clean vs a regular manual toothbrush angled to reach deep between teeth the crossaction toothbrush head has precisely angled bristles set at 16 degrees indicator bristles fade as a sign to replace yo