Dental sealants are thin, plastic coatings that are applied to the chewing surfaces of teeth, usually the back teeth (premolars and molars), to prevent tooth decay. They are a quick, easy, and painless way to prevent cavities and protect teeth from disease-causing bacteria. Sealants are painted onto the teeth and then cured and hardened with a special light. They work by coating the deep grooves in the back teeth, which can trap food and bacteria and lead to tooth decay over time. Sealants are most effective when applied soon after permanent molars come into the mouth, around age 6 for first molars and age 12 for second molars. Children aged 6 to 11 who don’t have dental sealants are three times more likely to develop tooth decay. Adults without decay or fillings in their molars can also benefit from sealants. Applying sealants is a simple and painless process that takes only a few minutes. Sealants are a safe and effective way to reduce the risk of cavities and are less costly than other treatments.