Sealants are a preventive, safe procedure that is painless and low cost versus restorative fillings. Sealants have been used primarily on children’s teeth for more than 20 years. However, any tooth without a restoration can benefit from this thin, protective plastic covering. It may be tooth colored or clear and is bonded to the chewing surfaces of molars and premolars. The sealant forms a hard protective shield that keeps food and bacteria from getting in to the tiny groves in the teeth and causing decay.