Do you want your electric toothbrush to be tailored to your oral hygiene needs? Oral-B CrossAction toothbrush head is designed to reach deep in between teeth for a superior clean vs. a regular manual toothbrush Oral-B 3DWhite toothbrush head provides advanced cleaning and whitening results Oral-B Sensitive Clean provides a superior cleaning for sensitive teeth and gums vs. a regular manual toothbrush The bristles on FlossAction toothbrush head clean tooth surfaces while specially designed MicroPulse bristles reach and clean deep between teeth for outstanding plaque removal. Designed with dentists, and compatible with Oral-B rechargeable electric toothbrush handles, except for Oral-B sonic toothbrushes Contents: 1 toothbrush head 3DWhite, 1 toothbrush head Sensitive Clean, 1 toothbrush head CrossAction, 1 toothbrush head FlossAction 4 Brush Head Refills DIRECTIONS: Wet the brush head and apply toothpaste. Place the toothbrush in the mouth and turn on. Guide the brush head slowly from tooth to tooth. Hold the toothbrush head in place for a few seconds before moving on to the next tooth. Brush the gums as well as the teeth, first the outsides, then the insides, finally the chewing surfaces. Replace brush (head) every 3 months or sooner if brush head becomes loose due to damage. Replace brush head when bristles are worn, or when color indicator bristles have faded to halfway. Dentists recommend that you change your toothbrush every 3 months.