The Waterpik® Plaque Seeker Tips are for implants, crowns, bridges, and other restorations. Clinically proven more effective than string floss for improving gum health, the new Plaque Seeker® Tip is designed to provide the benefits of pulsating water. It has three thin tufts of bristles to access stubborn plaque around implants, crowns, bridges, veneers, and other areas that are especially susceptible to plaque accumulation. Change every 3 months for best results. These replacement tips can be used with these water flossers: WP-900, WP-100, WP-450, WP-260, WP-300.