Sealants are thin layers of composite resin that are placed in the pits, fissures and grooves of teeth, usually molars, to prevent decay on these surfaces. The majority of decay on the back teeth begins in the grooves and pits of chewing surfaces, especially in the first few years after the teeth erupt.
Sealants are one of the most effective methods of preventing decay. Though it’s still possible for decay to take place on the surfaces between teeth, sealants significantly reduce the overall chance of cavities in children and adults.