Sealant

A sealant is a thin, protective coating, usually made from a tooth-coloured resin, that is applied to the pits and fissures of the chewing surfaces of molars and premolars to help block out bacteria and food debris and reduce the risk of tooth decay. It is most commonly used on back teeth where grooves are deep and difficult to clean with a toothbrush.

Placement is quick and painless: the tooth is cleaned, a mild etching solution is applied and rinsed, and the liquid sealant is painted into the grooves and hardened with a curing light. Sealants can last several years but should be checked at regular dental visits and repaired or replaced if they wear away or become damaged; they are a preventive measure and do not replace the need for good oral hygiene and fluoride exposure.