Colgate Gentle Clean Ultra Soft Toothbrush has been clinically proven to remove more plaque than a regular manual toothbrush with its Criss Cross bristles, which are angled at 16 degree to attack plaque from the right angle.Removes up to 93 percent of plaque in hard-to-reach areas.Removes up to 34 percent more plaque along the gum line.Power Tip bristles for cleaning the areas that are difficult to reach.End-rounded bristles for cleaning the areas that are difficult to reach.2 flexing sides for a superior clean.