Electric toothbrush removes more plaque than an ordinary manual toothbrush. Features perfectly angled bristles to get deep in between teeth and remove plaque. Interchangeable brush head. Compatible with Genius, Smart, Pro, Trizone and Vitality. Does not fit Oral B Cross Action Power (battery type) or Oral B Sonic toothbrushes. Dentists recommend changing your brush every 3 months. Indicator bristles signal time to change brush head. All reasonable efforts have been made to ensure that ingredient listings and other information for products displayed on this website are up to date, accurate and complete. Do not use on children under age 3. Replace brush head every 3 months or sooner if brush head becomes loose due to damage.