GUM Dome Trim Toothbrush Full Head Medium 458 For effective plaque removal on tooth surfaces and below gumline. Dome Trim Bristle Design.Raised center bristles form a domed cleaning surface. Supports the recommended 45 ° angle of brushing. Clinically proven to reduce plaque below the gumline. Tapered end-rounded bristles. Textured bristle tips effectivley picks up the plaque. Comfortable soft grip with raised ribs on both sides. Recommended and dispensed by dental professionals. Clinically proven to fight gingivitis and tooth decay. Effective in maintaining good oral health.