Sealants take only a few minutes for each tooth. The teeth that will be sealed are cleaned. Then the chewing surfacaes are conditioned to help the sealant adhere to the tooth. The sealant is then ‘painted’ onto the tooth enamel, where it bonds directly to the tooth and hardens. Sometimes a special curing light is used to help the sealant harden. Sealants last for several years before a reapplication is needed.