An orthodontist is the oral health care provider who specializes in diagnosis, prevention, interception, and treatment of malocclusions, or “bad bites,” of the teeth and surrounding structures. Malocclusions can result from crowded, missing, or extra teeth or jaws that are out of alignment. This specialist is responsible for straightening teeth by moving them through bone by the use of bands, wires, braces, and other fixed or removable corrective appliances or retainers. This specialist treats children as well as adults who may wish to improve their appearance and bite.