Fillings Teeth that have tooth decay must be repaired. Advances in dental materials and techniques provide new, effective ways to restore teeth. Sealants Dental sealants are thin, plastic films painted on the chewing surfaces of the molars and premolars. They are highly effective in preventing tooth decay. Wisdom Teeth Extraction Because most mouths are too small for the four additional molars called wisdom teeth, these teeth usually must be extracted. Dental Emergencies One type of dental emergency is a knocked-out tooth. If it's a permanent tooth, rinse it and place it back in the socket. Then immediately take your child to the dentist. Orthodontics/Braces for Children Orthodontics is the dental specialty that focuses on the development, prevention, and correction of irregularities of the teeth, bite, and jaws.