About this item Removes up to 100% more bacterial plaque for cleaner teeth and healthier gums vs. a manual toothbrush Only genuine Oral-B brush heads feature X-shape bristles that clean in areas that regular ones cannot reach for optimal cleaning efficacy Oral-B Sensitive Clean features high density of extra soft bristles for a gentle and effective clean Guaranteed fit with Oral-B electric rechargeable toothbrushes except Pulsonic & iO toothbrushes Brush head usage indicator: bristles turn from green to yellow reminding you when to change to keep 100% cleaning efficacy Oral-B is #1 brand most used by dentists worldwide with clinically proven results