As of April 2023, studies have shown that dental sealants are highly effective in preventing cavities in children and adolescents. According to the Centers for Disease Control and Prevention (CDC), school-age children without sealants have almost three times more first molar cavities than children with sealants. Research indicates that sealants can reduce the risk of decay in molars by nearly 80% immediately after application and continue to protect against 50% of cavities for up to four years post-application. Sealants can remain effective for up to nine years, but they need to be checked regularly for chipping or wearing at dental check-ups.
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