Sealants are a durable, long-lasting resin that is applied to your child’s developing molars. Filling in the natural pits and cracks in the enamel layer, sealants help to block out any agents that might cause early tooth decay, such as food particles or bacteria. An effective way to help protect your child’s teeth, sealants are a quick and non-invasive procedure to apply, and they can last for several years.