Lingual invisible orthodontic technology began to appear in the United States and Japan back in the 1970s. It is an orthodontic treatment in which the aligners are all mounted on the lingual (inner) side of the teeth, so that no orthodontic treatment device is visible on the outside. The lingual invisible orthodontic technique is recognized as the most aesthetically pleasing, technically challenging, operationally demanding and expensive technique in the field of orthodontics. At present, lingual invisible orthodontic technology is quite mature in Europe and Japan, and only a few orthodontists in China have mastered this technology. At present, there are only two internationally recognized lingual invisible orthodontic associations: the World Lingual Orthodontic Association and the European Lingual Orthodontic Association. There are five Chinese doctors in the World Association of Lingual Orthodontics, including Dr. Baohua Xu and Dr. Guangying Wu, the deputy director; Dr. Guangying Wu is the only member of the European Association of Lingual Orthodontics in China. The following is the certification of Dr. Wu Guanying. The picture below shows the difference between the metal and ceramic labial aligners and the lingual invisible aligners, which achieve the effect of “absolute invisibility and absolute beauty”. Because they are fixed to the lingual (inner) side of the teeth, they allow for precise control of tooth movement in three dimensions, much more precise than removable aligners. To learn more about lingual invisible orthodontics you can follow Sina Weibo: lingual invisible orthodontics Wu Guanying, or you can contact me and we will ask a more professional orthodontist to answer you. May you still have a bright smile during the orthodontic process!