Because the formation of plaque on teeth is one of the principle causes of gum disease, sealants can also help in the prevention of other common dental problems. Because sealants are only applied after the adult molars come in, they provide peace of mind when sending your child off to preschool so that dental health will be one less thing you will have to worry about. Another important thing to know is how to get rid of cavities or simply how to prevent them. This will keep those adult molars safe once they come in.