Fissure sealant is a dental procedure that aids in the prevention of dental caries. A plastic coating is applied on the chewing surface of your posterior teeth (molars and premolars) in order to prevent food and germs from getting stuck in between the grooves. The process is non-invasive, the tooth is cleaned and then the sealants are applied. Once applied the hygienist will shine a light to harden the sealants, the procedure does not take long. Sealants should be checked at each regular dental visit and if necessary the sealants can be reapplied.