Oral irrigator

[3] Dr. Matteson's invention was designed to cleanse the teeth and gums after meals as an alternative to using hand syringes.

It attached directly to a sink's faucet and featured a mechanical valve to control water pressure.

[5] The Waterpik is now sold by Water Pik, Inc.[6] Oral irrigators have been evaluated in a number of scientific studies and have been tested for periodontal maintenance,[7] and those with gingivitis, diabetes, orthodontic appliances, and tooth replacements such as crowns, and implants.

[2] A 2008 systematic review found improvement in gingival health with irrigation compared with regular oral hygiene, although there was no reduction in plaque.

After filling the reservoir with water, point the nozzle close to the gum line at an angle of 90 degrees.

The water jet should be directed between the tooth spaces, surfaces above the gum line, stopping momentarily at the area to be cleaned.