The oral b precision clean bristles reach deep between teeth and cover more surface leaving your whole mouth cleaner than a regular manual and power away up to 100 more plaque for a precise clean vs a regular manual toothbrush micropulse bristles provide a high quality deep clean between teeth designed to clean tooth by tooth indicator bristles fade as a sign to replace your toothbrush head for a good clean about every 3 months compatible with the entire lineup of ora