Oral-B io Ultimate Clean \ \ 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. Since 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 than a regular manual toothbrush along the gum line \ color-changing bristles: oral-b toothbrush heads feature bristles that fade in color to signal when it's time to replace your brush head for uninterrupted cleaning power \ quarterly replacement: for superior cleaning, replace your brush head when the bristles start to fade and turn white \ exclusively for oral-b io handles: ensure your teeth are cleaned to their best with the unique brush head 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 \ \ \ use \ \ dentists recommend replacing your toothbrush approximately every 3 months, or when the bristles fade \