The TriZone brush head of the Trizone 3000 resembles that of a manual toothbrush, but its design allows for significantly better cleaning. Oral-B's 3D cleaning technology is based on pulsating movements combined with simultaneous side-to-side motions. This way, you can remove up to 100% more plaque than with a conventional manual toothbrush using your familiar brushing technique. This ensures excellent oral hygiene.