A dental sealant creates a highly effective barrier against decay. Sealants are thin coatings applied to the chewing surfaces of a child’s permanent back teeth, where most cavities form. Sealants help “seal out” food and plaque, and reduces the risk of decay. Applying a sealant is an easy procedure and can be performed in one dental visit. Teeth are first cleaned, then conditioned and dried. Once the sealant is applied it flows into the grooves of the tooth, and is then hardened with a special light. Your child will be able to eat right after the appointment.