Oral-B Toothbrush Pro Expert SuperiorOral B Pro Expert Anti Plaque is designed to reduce up to 90% plaque in hard to reach areas, based on a single use clinical study, to give you a clean and healthy smile. Its flexing Criss Cross bristles lift and sweep away plaque from an optimal angle. Reduces up to 90% plaque in hard to reach areas, 16 degree angled Criss Cross bristles to penetrate hard to reach plaque in between teeth, Power Tip Bristles help reach deep and clean hard to reach