Sealants are used to prevent the formation of decay in the pits and fissures of permanent teeth. This protective varnish is applied to the premolars and permanent molars to fill the grooves where bacteria often gets trapped. Ideally the sealants are applied as soon as the permanent teeth errupt. Local anesthesia is not required for this treatment.
To learn more about dental sealants
For more information on dental sealants, ask your dentist or watch the following video.