Nozzle indicated for cleaning orthodontic appliances and dental braces. Removes hard-to-reach plaque between brackets and wires. It also helps remove bacteria and food debris from teeth and gums. All of this results in a significant improvement in the health of the gums of patients with orthodontics.\ \ It can be combined with:\ •Waterpik® Ultra WP-100\ •Waterpik® Traveler WP-300\ •Waterpik® Plus wireless WP-450 \ •Waterpik® Wireless Express WP-02 Instructions for use: It is recommended to change them every 3 months when wear of the filaments is observed.