Oral B Vitality Dual Clean for a healthy mouth that shows in your smile. Cleans and brightens, with a more thorough clean than a manual toothbrush. Helps prevent gum disease, the leading cause of tooth loss, and keeps teeth naturally white. The Oral B Dual Action Brush heads both move for twice the cleaning action. High speed oscillating - rotating motion combined with an additional side to side motion to sweep plaque away. Replace brush heads every 3 months, when bristles are worn or when color on Indictor bristles has faded half way down the bristles. Oral B, the brand more dentists use themselves worldwide.