PURPOSE: A screw for orthodontics is provided, which can be used as a fixing source in correcting teeth by being strongly and easily implanted in maxilla and alveolar bone. CONSTITUTION: A screw for orthodontics comprises a head unit(110) which is held by a tool to make a screw for orthodontics pressed; a screw part(200) which is implanted in the alveolar bone and in which the screw thread is formed in the circumference and one end is opened; a connection part(113) which is formed in the head unit and connects the screw part and in which diameter increases toward the screw part; a cutting portion(240) which is formed in opened one end of the screw part along the circumference and cuts the alveolar bone in the ring shape; and a space of a cylindrical shape which is formed inside the screw part.
