Thorough cleaning of teeth as well as cleaning gums and braces requires special tools, because if plaque remains on teeth and gums after brushing, this can lead to tooth decay and gum disease. This oral irrigator nozzle features an Ultrasonic technology nozzle to carefully remove food debris, plaque and stubborn bacteria even in interdental spaces in a powerful but gentle way. Also, this water flosser reaches areas toothbrush and dental floss might miss.