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| |    How to Prevent Cavities: The Role of Sealants by Amy A. Napierala, D.D.S. reviewed by Laura Jana, M.D., F.A.A.P. "Sealants are another important part of preventive dentistry. Many teeth have small grooves or pitted areas in the enamel, where bits of food and dental plaque accumulate. Most of these tooth surface imperfections are too small for toothbrush bristles to enter, so the food material and bacterial plaque cannot effectively be brushed or flossed away. Tooth decay, called 'pit and fissure caries,' usually results. However, the dentist or hygienist can often prevent such tooth decay. A sealant consists of a liquid resin that flows across the tooth surface and fills the grooves and pits. The resin then completely hardens and the enamel imperfection is 'sealed' off. Food debris and dental plaque cannot enter a groove or pit that has been sealed with bonded resin. Sealants last for many years, but depending on a child's diet, oral habits, and mouth environment, eventually need to be repaired or replaced." Dr. Benjamin Spock, Baby and Child Care, seventh edition As Dr. Spock noted, sealants have become an important weapon in the fight against cavities. Sealants usually are applied when a child's permanent molars erupt, around six years of age. Sealants are easy to apply, can be either tooth colored or clear, and are tasteless after they dry. They cost approximately $40 a tooth and are covered by many dental plans. While sealants are quite durable, your child needs to be careful not to chew on ice cubes or other hard materials or the coating can be damaged. Sealants last approximately three to five years in most children; they should be evaluated at regular pediatric dental checkups to make sure that they haven't worn off, chipped, or cracked. Bottom line: Sealants are well worth putting on your child's teeth, but remember that as effective as they are, they don't eliminate the need for good oral hygiene and a sensible diet.
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