Some parents wonder why they should put dental sealants on their child’s teeth. If they make it a habit of brushing and flossing after they eat and avoid gummy or extremely sugary foods, shouldn’t their child be cavity free? Unfortunately, no matter how good a child’s dental habits may be, they cannot control the grooves and crevices in their back teeth. These difficult structures make it almost impossible for the toothbrush to work its way all the way into the teeth, allowing plaque to build up, which can cause bacteria build up and eventually cause decay. When dental sealants are applied, nothing can get through the surface of the tooth, preventing cavities in your child’s mouth.