The document discusses various oral habits in children such as thumb sucking, finger sucking, pacifier use, lip biting, tongue thrusting, mouth breathing, nail biting, bruxism, and self-mutilation. It describes the potential dental effects of each habit including anterior open bite, maxillary constriction, and labial-lingual movement of the incisors. Treatment options discussed include reminder therapy, reward therapy, and appliance therapy. Common appliances mentioned are palatal cribs, tongue cribs, and the Bluegrass appliance.