Dental sealants are a type of preventive treatment that works to protect teeth from cavities. They are among the simplest yet most powerful and effective preventive treatments available. Sealants are made of clear or tooth-colored resin material and are painted onto the chewing surfaces of the teeth to form a smooth, protective barrier over the natural pits and grooves of the tooth surfaces. This blocks out food debris, harmful bacteria, and plaque, and it has the added benefit of making it easier for you to clean your teeth with regular brushing and flossing.