The tips are useful for implants, crowns, bridges, permanent retainers, and restorations. Clinically proven more effective than string floss for improving gum health. As you water floss, gently glide the tip along the gumline and restorations, pausing briefly between teeth to gently brush and allow the water to flow between the teeth. Recommended for use with WF-02, WF-03 - Cordless Express Water Flosser WP-100, WP-112, WP-100W - Ultra Water Flosser WP-260 - Water Flosser For Kids WP-300 - Traveler Water Flosser WP-440 - Cordless Professional Water Flosser WP-450 - Cordless Plus Water Flosser WP-462 - Cordless Plus Water Flosser WP-560, WP-562, WP-563, WP-565 - White Cordless Advanced Water Flosser WP-660 - Aquarius Professional Water Flosser WP-670, WP-672, WP-674, WP-676 - Aquarius Professional Designer Series Water Flosser WP-861W, WP-862W - Waterpik Complete Care 5.0 WP-900 - Waterpik Complete Care Tips - Not applicable to the following models: WP-40W, WP-60W, WP-70W, WP-72W & WP-90W, WP-SR-400W