Dual-angled end bristles. Compare to Colgate Plus (Colgate Plus is a registered trademark of the Colgate-Palmolive Company). Dual-angled end bristles easily reach back and in-between teeth for effective cleaning and removal of plaque. Tapered head design allows easy access to back teeth. Rubber handle grip for better control. Textured tongue and cheek cleaner on back of toothbrush head removes more odor-causing bacteria than brushing alone. Dentists recommend replacing your toothbrush every 3 months. Questions? 1-888-423-0139. www.topcarebrand.com. Quality Guaranteed: This Top Care product is laboratory tested to guarantee its highest quality. Your total satisfaction is guaranteed.