Triple Zone Cleaning provides up to 2x deeper reach in between teeth*n*vs. a regular manual toothbrushnSide-to-side bristles sweep away plaque while the moving power tip penetrates hard to reach areas and stationary bristles polish tooth surfacesn#1 Dentist Used Toothbrush Brand, Worldwide - Oral-B (data on file)nCompatible with the entire lineup of Oral-B rechargeable handles, except for Oral-B sonic toothbrushesnCleans better 3x longer vs. store brand refills*. *after 13 week vs. 4 weeks of comparable store brand use.nIndicator bristles signal time to replace brush head. Dentists recommend changing your brush every 3 months.nInterchangeable brush head: Floss Action, Pro White, Precision Clean, Sensitive Gum Care and Dual CleannDoes not fit: Vitality Sonic, Sonic Complete, Pulsonic, CrossAction Power.n#1 Dentist Recommended Toothbrush Brand Worldwide, Oral-B.n