Research has shown that almost everybody has a 95 percent chance of eventually experiencing cavities in the pits and grooves of their teeth. Children, receive the greatest benefit from sealants because they have newly erupted, permanent teeth on which food particles and bacteria cannot be cleaned out easily.
Sealant is a thin plastic film that painted on the chewing surfaces of molars and premolars (the teeth directly in front of the molars). Sealants have been shown to be highly effective in the prevention of cavities. Scientific studies have proven that properly applied sealants are 100 percent effective in protecting the tooth surfaces from caries. Because sealants act as a physical barrier to decay, protection is determined by the sealants' ability to adhere to the tooth. As long as the sealant remains intact, small food particles and bacteria that cause cavities cannot penetrate through or around a sealant. In fact, research has shown that sealants actually stop cavities when placed on top of a slightly decayed tooth by sealing off the supply of nutrients to the bacteria that causes a cavity. Sealant protection is reduced or lost when part or the entire bond between the tooth and sealant is broken.