Whiter teeth from day one thanks to the removal of surface stains For maximum cleaning effectiveness, only authentic Oral-B brush heads have X-shaped bristles that clean in places that ordinary ones cannot. A special polishing cup is included with Oral-B 3D White to get rid of surface stains. With the exception of pulsonic and iO toothbrushes, Oral-B electric rechargeable toothbrushes are guaranteed to fit. The bristles on the brush head turn from green to yellow as a usage indicator, alerting you when to replace them to maintain 100% cleaning effectiveness. With clinically demonstrated results, Oral-B is the most popular brand among dentists worldwide.