Oral-B io Ultimate Clean Black \ \ Replacement Electric Toothbrush Heads \ \ Oral-B io Ultimate Clean Replacement Toothbrush Heads combine powerful yet gentle micro-vibrations with a unique dentist-inspired round head design for a professional cleaning feel every day. \ Designed exclusively for Oral-B io electric toothbrush handles, Ultimate Clean brush heads help remove up to 100% more plaque than a regular manual toothbrush, leaving teeth clean and sparkling. The bristles are angled at a precise 16 degrees to make it easier to clean hard-to-reach areas of the mouth. \ \ As dentists recommend changing your brush head every 3 months for best results, Oral-B replacement toothbrush heads feature fibers that fade and turn white to signal the need for replacement. Enjoy a superior clean with the only replacement brush heads designed exclusively for and perfectly fitted to your Oral-B io electric toothbrush. \ \ \ Superior plaque removal: the electric toothbrush head is perfectly angled to effectively and gently remove up to 100% more plaque compared to a regular manual toothbrush along the gum line \ Color-changing bristles: Oral-B replacement toothbrush heads feature bristles that fade in color to signal when it’s time to replace your brush head for consistent cleaning power \ Quarterly replacement: For superior cleaning, replace your brush head when the bristles start to fade and turn white \ Exclusive to Oral-B io handles: Ensure superior cleaning of your teeth with the unique brush head designed exclusively for the Oral-B io electric toothbrush and therefore fits perfectly on it \ Recommended by dentists: Oral-B is the No. 1 toothbrush recommended by dentists worldwide \ \