Similar to how orthodontics involves repositioning teeth, surgical orthodontics (orthognathic surgery) entails moving the jaws into proper alignment. The teeth can only be moved so far within the supporting jaw structures with orthodontics alone. When the jaws are misaligned to the point of preventing the upper and lower teeth from fitting together, surgical orthodontics is required. Orthognathic surgery can improve the ability to bite, speak, and breathe for these patients. Besides jaw function, surgical orthodontics can also drastically improve facial form and esthetics.