Fits most Oral-B power brushes. No.1 used by dentists worldwide. White teeth starting from day 1 (by removing surface stains). 1. Features dentist-inspired polishing cup to remove surface stains and naturally whiten teeth. 2. Dentists recommend changing your brush head every 3 months. 3. Interchangeable head. www.pg.com. www.oralb.com. Customer Service Number: 1-800-56-OralB (1-800-566-7252); www.oralb.com. Precision clean. Dual clean. Sensitive gum care. Floss action. Cross action. Made in Germany.