Dental Sealants are a thin plastic-like coating that fill in the grooves on the chewing surfaces of the teeth and protect them from tooth decay. Sealants are usually applied to permanent molars (back teeth) to prevent bacteria and food from getting stuck in the creases that naturally occur on these surfaces. It is best to apply sealants soon after the permanent molars erupt, before tooth decay has a chance to begin. The application process is easy and completely painless. Sealants are simply “painted” on a clean and dry tooth surface and then hardened with a special light. The protective coating is virtually invisible and is an important part of a child’s total preventive dental care. Once applied, a sealant can last as long as 5 -10 years.