Colgate® Extra Clean Med Toothbrush. New look. Circular power bristles. ADA accepted. American Dental Association. Circular power bristles to help remove tooth stains. "The ADA Council on Scientific Affairs' Acceptance of the Colgate® extra clean toothbrush is based on its finding that the product is effective for removing plaque and helping to prevent and reduce gingivitis, when used as directed." Save water. www.colgate.com/savewater. 1-800-468-6502. www.colgate.com. Made under license from Colgate-Palmolive Company, trademark owners.