As each of the adult molars (back teeth) appears, and if the tooth is free from decay, a ‘pit and fissure sealant' can be used to protect the tooth. The sealant is a plastic coating that fills all the little crevices in the tooth surface, creating a flat surface that is easier to clean. Adults can also have this treatment if the teeth are free from decay. Your dental team will discuss whether this is right for you. Children can also have fluoride varnishes painted onto their teeth twice a year which will help to reduce the chances of decay.