Dental sealants are used to help protect the deep grooves and pits on the chewing surfaces of your child’s teeth, particularly in the back teeth or molars. Most tooth decay and cavities form in these grooves because this is one of the most difficult areas from which to remove plaque. To help reduce the risk of decay formation on the chewing surfaces of these teeth, a dental sealant is used to seal off the deep pits and provide a smoother surface that is easier to keep clean and free of dental decay.