Dental sealants have been in continued use since their FDA approval in the 1970s.
A sealant is a thin plastic coating applied to the permanent molars and pre-molars soon after their eruption in order to prevent food particles from entering the tiny crevices in these teeth. This preventative treatment protects the teeth from tooth decay by shielding the tooth. It does not require the removal of enamel. A dental curing light is often used to harden the sealant.
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