The Waterpik Ultra Water Flosser is The Easy and More Effective Way to Floss™. It is the number one recommended Water Flosser model among Dental Professionals in the US. The Waterpik Ultra Water Flosser is the ultimate in water flossing performance. It features ten pressure settings (between 5 to 90 psi), a contemporary design that is smaller and quieter than previous models, a covered reservoir with in-lid tip storage, and seven unique tips. Waterpik Water Flossers are the only brand clinically proven to be more effective than traditional dental floss and Sonicare Air Floss for reducing plaque, gingivitis and gum disease. And it's perfect for anyone with braces, implants, crowns, bridges or periodontal pockets.