Tooth-by-tooth cleaning cleanmaximiser indicator fits most oral-b handles go for a thorough and gentle oral hygiene routine with replaceable brush heads designed to surround each tooth for effective plaque removal. The round shape works precisely along the gum line and in between teeth, so you get a clean and fresh feeling every day. Advantages round brush head surrounds each tooth for effective cleaning up to 100% more plaque removal compared to a manual toothbrush. Cleanmaximiser technology: green indicator brushes turn yellow when it's time to change approximately every 3 months . Dense and targeted brush mixture reaches between teeth and along the gum line. Gentle for daily use and comfortable in the mouth thanks to rounded brush tips. Easy click-on off system for quick replacement and a stable fit while brushing. Compatibility fits most oral-b rechargeable electric toothbrushes, including vitality, pro, smart and genius. Not compatible with io and pulsonic handles. How to use the product click the brush head onto the handle until it clicks. Moisten the bristles, apply toothpaste and move the round head slowly from tooth to tooth. Keep light pressure and let the brush head do the work focus on the gum line and spaces. Brush for 2 minutes, morning and evening. Replace the brush head when the indicator bristles change color, or at the latest after 3 months. Tip rinse the brush head thoroughly after use and let it air dry upright for optimal hygiene. If your toothbrush h...