Abstract:

Professional X-ray is important to know the patient’s type of malocclusion and make treatment planning in orthodontic treatment. For a long time, we use panoramic radiograph and cephalometric head film which are two-dimensional images, and there are many shortcomings such as overlap and enlarge image. The traditional fan beam computed tomography can’t become a routine inspection of the patients with orthodontic tools, because its covers big area, high price, complex operation, radiation quantity, expensive cost and other factors. In recent years, with the introduction of cone beam computed tomography（CBCT） on the diagnosis and treatment of orthodontic patients, as well as in the doctor-patient communication are of great help. This article aimed to review the origin, technical features and the use of CBCT in orthodontics.