Sealants are a safe and painless way of protecting your teeth from tooth decay . A sealant is a protective plastic coating, which is applied to the biting surfaces of a back teeth. The sealant forms a hard shield that keeps food and bacteria from getting into the tiny grooves tiny grooves in the teeth and causing decay.
Applied only to the back teeth, these are the teeth have pits (small hallows) and fissures ( grooves).