Orthodontics is a separate branch of dentistry that deals with straightening teeth or correcting the position of teeth and jaws. An orthodontist must complete a specialized training program that takes two years on top of dentistry school. You can find more information here: http://www.colgate.com/app/Colgate/US/OC/Information/ToothWhiteningCosDent/Orthodontics/Orthodontics/WhatisOrthodontics.cvsp
