This simple, noninvasive procedure is accomplished by placing a thin resin material on the occlusal (flat) surface of a molar, and then curing it with a special light. Sealant material fills in narrow grooves in the tooth's anatomy that cannot be adequately cleaned by brushing. In some cases, the tooth structure has such fine grooves or pits that not one bristle of a toothbrush can get in. Over time, cavities develop, and you don't want that. By sealing the grooves and pits, it is possible to brush off all the plaque and keep your teeth healthy.