Achieve healthy teeth and gums with the oral b precision clean toothbrush head refills its advanced bristle system removes more plaque than a manual toothbrush and the interdental tips penetrate hard to reach areas for intense cleaning the refills deliver a powerful polishing action whilst remaining gentle to teeth and the indicator bristles fade halfway to signal when your brush head needs replacing en please note compatible with all oscillatingrotating oral b toothbrushes except pu