Dental sealants are very thin coatings used to fill in deep grooves and pits in teeth that can harbor bacteria. Sealants are applied to healthy chewing surfaces of the teeth to prevent decay and cavities – especially among children. According to the Centers for Disease Control, tooth decay affects more than half of children ages 6 – 8, and even more older children and teens. By applying sealants, families can prevent decay and the save on costs associated with filling cavities. If you plan to get dental sealants, the CDC recommends doing so shortly after the molars have erupted from the gums – usually beginning around age 6.