Dental Sealants are used to prevent tooth decay on the chewing surfaces of posterior (back) teeth. The sealants can be applied during a single dental visit. By coating the surface of the tooth it effectively Seals the deep grooves thereby acting as a barrier to protect the enamel from the plaque that leads to decay. Sealants only take a few minutes to apply onto the teeth. Children and adults cab benefit from having sealants applied to their teeth.