Figure 1: Lingual braces (before treatment) Ding Rui, Department of Orthodontics, Urumqi Stomatological Hospital Figure 2: Lingual braces (after treatment) Figure 3: Lingual braces, after treatment. Many adult patients, due to aesthetic, professional and social requirements, very much want to have a mouthful of straight teeth, but for wearing braces after the “steel teeth” concerns, thus, invisible orthodontic technology was born to solve the problem of misaligned teeth. As soon as this technology was introduced, it was warmly welcomed by people in the performing arts, lawyers, teachers, civil servants and other aesthetically or professionally demanding and beauty-loving people, achieving the purpose of perfect dental beauty. Invisible orthodontics is an orthodontic treatment in which the aligners are all installed on the lingual side of the teeth, hence the name lingual orthodontics. The aligners are invisible from the outside and normal social and professional activities can still be carried out during orthodontic treatment. Invisible orthodontics – unknowingly changes the alignment of your teeth and changes your facial appearance. First invented and clinically applied by Japanese dentists, lingual invisible orthodontic treatment for adults has gradually become popular in developed countries. It is the fixed orthodontic treatment technique with the highest technical content and the most complex clinical operation, but the best aesthetic effect in treatment, so it is both the current hot spot of clinical orthodontic research and the high point of fixed orthodontic treatment technology. At present, there are very few medical institutions in Xinjiang that are equipped to carry out lingual orthodontics, because the technology requires precise lingual brackets for technician room positioning, and there are very few doctors who master the technician room positioning technology, and even the special lingual orthodontic study classes do not teach the technician room positioning technology. But the mastery of positioning technology is one of the basic prerequisites for good lingual orthodontics. I learned the orthodontic technology systematically from Associate Professor Liang Wei of the Department of Orthodontics of Peking University Dental Hospital from 2007 to 2008, and attended the advanced lingual orthodontic workshop hosted by Professor Xu Baohua in 2010. He took the lead in carrying out this technique in the whole territory and has successfully treated more than ten patients. We hope that this technology can bring a new treatment experience to the majority of people who love orthodontics throughout Xinjiang. The picture above is the treatment effect picture of the first lingual patient treated by me in Xinjiang Urumqi Stomatological Hospital, in total, we understand the advantages of lingual orthodontics.