Brush like an expert with the Oral-B Pro-Expert CrossAction Anti-Plaque Toothbrush 35 Medium, removing up to 90% of hard-to-reach plaque. . Expert toothbrush with anti-plaque capabilities. The flexing Criss Cross bristles are angled in opposite directions, lifting and sweeping away plaque as you move it around in your mouth. It's clinically proven to remove more plaque than a regular manual toothbrush and removes up to 90% of hard-to-reach plaque based on a single use clinical study. Product Features: Superior clean versus a regular toothbrush Gentle for your enamel Dentists recommend replacing your toothbrush every 3 months or when bristles are faded and worn