Lingual (inner side of the teeth) orthodontics is theoretically and technically very different from traditional labial (outer side of the teeth) orthodontics. Although it requires a high level of skill, it meets the aesthetic requirements of the patient to the maximum extent possible and avoids the work and social obstacles caused by the brackets and wires attached to the tooth surface by previous labial orthodontic techniques. In addition to the aesthetic advantages, lingual orthodontics may also significantly reduce the rate of tooth decay and may avoid damage to the lips from labial braces during movement. In addition, because of the enhanced control of posterior tooth resistance with lingual orthodontics, it is also possible to control tooth movement more effectively. The birth of lingual orthodontic technology can be a long-awaited good news for those who want to straighten but are afraid of affecting their work, especially for those adults who want to straighten but are afraid of affecting their work; lingual orthodontics is also very suitable for teenagers and athletes, dancers, acrobats, etc. who often do sports, because it can avoid lip damage and allow you to do various sports with confidence and boldness; it is also very suitable for wind music players because it can avoid the influence of the lateral lip brace on the playing, and at the same time, it is more suitable for models, actors and other special professionals. However, lingual braces also have some disadvantages. Because the aligners are placed on the inner side of the teeth, they require more careful cleaning of the teeth and regular scaling. In addition, there is a slight impact on pronunciation during the initial period of aligner placement, but it usually settles in gradually over 1-4 weeks. Currently in developed countries, lingual orthodontics has come into the lives of ordinary people, and with the further development of our economy, lingual orthodontics will change your teeth and change your life without you even knowing it!