Patients who consider invisible orthodontics usually don't want "ugly" appliances to affect their appearance during orthodontics. If the aesthetic requirements of orthodontic appliances are not high, ceramic brackets can be selected, but the archwire is metal. Therefore, this kind of correction has limited improvement on aesthetics, but it is not as abrupt as metal appliances. It doesn't mean much to patients who often have to face others or often face the camera. It is necessary to consider lingual invisible appliance or bracketless invisible appliance. Lingual invisible appliance is to stick the appliance on the inside of the tooth, which can achieve the effect of complete invisibility from the outside. At the same time, as a fixed appliance, it has a strong ability to control teeth and can accurately control the movement of teeth. Therefore, this kind of appliance can not only achieve the effect of traditional fixed appliance, but also achieve the aesthetic effect of being completely invisible. Bracket-free invisible appliance has a weak ability to control teeth, especially to adjust the occlusal relationship between maxilla and mandible, so this appliance can only be used to treat minor deformities, such as mild crowding. For moderate deformity, especially tooth extraction cases, its effect is still far from that of fixed appliances.

Reply expert: Peking University Stomatological Hospital-Orthodontics Department-Deputy Chief Physician Jia Peizeng