The invention discloses an automatic tooth arrangement method and an automatic tooth arrangement device, relating to the medical field of digital
orthodontics, and solving the problem that the automatic tooth arrangement is poor in accuracy. The main technical scheme is as follows: the automatic tooth arrangement method comprises the following steps: acquiring three-dimensional data of
dentition needing
orthodontics and three-dimensional data of
craniofacial jaw bone; selecting feature points on the three-dimensional data of the
dentition and the three-dimensional data of the
craniofacial jaw bone; constructing tooth arrangement planes and
dental arch curves according to the selected feature points, wherein the tooth arrangement planes comprise a median
sagittal plane, a horizontal plane and a tooth arrangement
occlusal plane, and the
dental arch curves comprise an
upper jaw tooth arrangement curve and a
lower jaw tooth arrangement curve; moving teeth in the three-dimensional data of the
dentition according to the preset tooth positions, so that a target dentition after
orthodontics is formed, and the preset tooth positions comprise the target upper and
lower dentition sagittal position, the target upper and
lower dentition vertical position, and the target upper jaw and lower jaw among-dentition position. The automatic tooth arrangement method and the automatic tooth arrangement device are mainly used for the tooth arrangement in the orthodontics.