Any of the adhesive composite resins that are used to seal or fill fissures between the cusps of molar and premolar teeth in children in order to prevent caries (which begins there).
A material that is applied to the chewing surface of a tooth is used to close any naturally formed fissures (cracks or grooves) in the enamel, aiding in the prevention of tooth decay. The use of fissure sealant might be suggested as a preventive method for children whose molar teeth have recently erupted.