Pit and fissure sealants are a great way to prevent decay from developing in the chewing surfaces of the teeth. The teeth are prepared by first being thoroughly cleaned and dried. A liquid is then placed in the grooves (pits and fissures) of the teeth and cured with a light to harden. The result is a hard coating that seals up grooves of the teeth, preventing bacteria from entering and starting the decay process. Sealants are particularly important as a preventive tool for decay in children with newly erupted molars, although anytime is a good time to prevent decay. If the tooth does not yet have a cavity or filling, then the grooves can be sealed