At first they may feel somewhat bulky, but a few days of normal chewing will wear the sealants into place. A sealant application can last as long as five years and often longer. Sealants should be checked regularly and reapplied if they wear off. Because teeth are more likely to decay when they first appear in the mouth, dental sealants are recommended for children and teenagers. Sealants help to keep teeth healthy by protecting them from decay.
Decay destroys parts of the tooth.
Each time a tooth is filled or a filling is replaced, more tooth is lost. Silver fillings last about six to eight years before they need to be replaced. Using sealants saves time and money and helps to keep teeth healthy.