Oral-B Advanced Power 400 is clinically proven to remove more harmful
plaque than an ordinary manual toothbrush. Your teeth and gums will feel
pampered because you're removing more plaque than an ordinary manual
toothbrush. Oral-B Advanced Power 400 has unique oscillating brush head
technology coupled with Patented interdental tip bristles that help you
penetrate hard-to-reach areas. Oral-B Advanced Power 400 helps to
prevent gum disease and tooth decay.