Many orthodontists are disappointed by the difficulty of tooth movement, the long treatment period, and the complication from the conventional orthodontic treatment. To solve these problems, corticotomy and distraction osteogenesis have been proposed to be applied to tooth movement. Corticotomy necessitates cutting through alveolar cortical bone which disturbs tooth to move, leading to the rapid movement. On the other side of distraction, new bone could be apposed by way of distraction osteogenesis.