The Oral-B Pro-Health Manual Toothbrush with CrossAction bristles has superior plaque removal.* It removes up to 90% of hard-to-reach plaque.** *vs. a regular manual toothbrush **One time brushing studies CrossAction bristles are angled in opposing directions to lift out and sweep away plaque Angled bristles for 90% deeper reach* *than a regular manual toothbrush in laboratory testing PowerTip Bristles: 550 extra long bristles to help clean hard to reach places; Indicator Bristles: Blue Indicator bristles fade halfway so you know when to replace your brush Oral-B, the brand more dentists use themselves worldwide; Oral-B recommends brushing with Crest toothpaste for optimal results