As everyone’s standard of living improves, more and more patients want to improve the aesthetics of their teeth through orthodontics. In the communication with the initial patients, I found that many patients still have such and such misunderstanding about orthodontics. I organize the most common questions asked by patients in my clinical work as follows, hoping to help you answer the doubts in your mind. Myth 1: Only children can receive orthodontic treatment There is no age limit for orthodontic treatment. Of course, teenagers have fast metabolism and strong adaptive ability, and the time needed for orthodontic treatment is relatively short. But this in no way means that orthodontics is limited to minors. Adult patients are perfectly capable of receiving orthodontic treatment as long as the periodontal condition of the teeth themselves allows it. Myth 2: Orthodontically corrected teeth are prone to loosening and falling off in old age. This is typical pseudoscience. Confusing orthodontics with periodontal disease. To take a simple example, modern orthodontics is only a hundred years old, while hundreds of years ago there was no orthodontics, when the elderly teeth fell out even more, it can be seen that tooth loss and orthodontics do not have anything to do with. Undeniably, teeth in the orthodontic process due to the force and alveolar bone remodeling, the degree of looseness will increase, but when the orthodontic treatment is over, the teeth are no longer under the force will be restored on their own, there is no problem of future loosening and falling off. Myth 3: Orthodontics need to extract teeth, will affect the health of the body, a clinical study of a university in Sweden found that extracting teeth will affect the memory of people. Since this is a scientific study, we should pay attention to the evidence, individual one or two research reports can not explain the problem at all. Tooth extraction for orthodontic treatment is a very common and mature form of treatment, and tooth extraction will not cause any adverse effect on the function and health of patients. It should be said that extraction treatment is also a choice of last resort, the Oriental face is characterized by the nose is not straight enough, the lips are more protruding, in order to achieve a better face, many patients (60% or even more) is the need to extract the orthodontic treatment. Myth 4: Orthodontic long time, high cost, porcelain crown restoration course is short, once and for all. Unlike a machine, tooth movement itself is a physiological process, and the speed of treatment is limited by normal physiology. Adult orthodontic treatment usually takes one and a half to two years. Although the porcelain crown treatment course is short, but the denture is after all a denture, late maintenance and long-term prognosis (generally recommended porcelain crowns five to ten years to replace a time) can not be ignored, not as some doctors publicized as a lifelong restorations. Myth 4: Braces are unattractive and affect work and life. Modern orthodontic technology is highly developed, and there are more and more types of braces, which can be completely invisible. And with the advancement of technology, the indications of invisible orthodontics are also more and more extensive, in the past some of the difficult cases that are regarded as contraindications can also be very good invisible orthodontics, and there is almost no impact on the work and life.