Oral-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 CrissCross bristles lift and sweep away plaque from an optimal angle.Reduces up to 90% plaque in hard-to-reach areas, 16 degree angled CrissCross bristles to penetrate hard-to-reach plaque in-between teeth, Power Tip Bristles help reach deep and clean hard-to-reach areas, Gentle on enamel, Superior clean vs. a regular manual toothbrush, Medium toothbrush, Oral-B, #1 toothbrush brand used by dentists worldwide