A dental sealant is a thin, plastic coating that is painted on the chewing surfaces of teeth -- typically the molars -- to prevent tooth decay by protecting against bacteria. The sealant forms a bond in grooves and depressions of the teeth to create a protective barrier against plaque, acids and other substances. Ideally, sealants are applied to molars and premolars when they first grow in. This addresses the cavity-prone years between 6 and 14. A sealant can also be used in adults and will be beneficial as long as there is no decay or fillings. Normally, sealants offer protection for up to 10 years, but they should be checked for chipping or wear during dental check-ups.
