What is the difference between double-jaw surgery and orthodontic treatment?

Orthodontic treatment moves the teeth to align them, while double-jaw surgery cuts the upper and lower jawbones themselves to correct their position. 1) A dental malocclusion, where only tooth alignment is the issue, is improved with orthodontics alone. 2) A mild difference between the jaws can be compensated for with orthodontics. 3) A large skeletal discrepancy, such as an underbite or severe protrusion, calls for surgical orthodontics, combining treatment before and after surgery. Which case applies is judged from skeletal analysis such as a cephalometric X-ray, so we recommend starting with a detailed examination.