Dental sealants protect the chewing surfaces of back teeth where most cavities in children are found. Made of clear or shaded plastic, sealants are painted onto the tiny grooves and depressions in the molars. By "sealing out" food and plaque, sealants reduce the risk of decay. They are quickly and painlessly applied to baby teeth as well as permanent teeth that, in the dentist's opinion, are likely to have decay on the biting surface. Sealants must be checked regularly and replaced when necessary. Generally, they will last for several years.
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