Orthodontic Treatment Orthodontic treatment is commonly known as “orthodontics”, “orthopedics” or “orthodontics”. Clinically, orthodontists will use orthodontic devices (movable or fixed) to improve the abnormal occlusion of the teeth or teeth rows, or even the abnormal relationship between the upper and lower jaws, or the abnormal shape of the face, etc., to the patient’s most appropriate position. The purpose of orthodontic treatment is to remove physiological (chewing, pronunciation, abnormal jaw development), case (tooth decay, periodontal disease, temporomandibular joint disease), psychological (sense of inferiority and withdrawal) and other disorders or diseases and other problems caused by the teeth, upper and lower jaws or jawbone abnormalities, and to restore their normal function, and in many cases, under the condition of permitting, it can also improve the appearance of the face, and thus enhance the patient’s self-confidence. 1. Removal of physiological disorders: clinically, patients may complain that they “can’t bite the upper and lower front teeth, and often can’t break the food when eating”, “don’t like to eat hard things and eat slowly”, “can’t pronounce words well, and have the feeling of having a big tongue”. The oral cavity is one of the most important organs of the digestive system, and the mouth is the most important organ of the digestive system. In fact, the oral cavity is the first gateway to the digestive organs, and the normal occlusion of the upper and lower teeth plays a very important role in the chewing function of the oral cavity and the articulation of sound. Therefore, orthodontic treatment can achieve the optimal occlusion of the upper and lower teeth, thus enhancing the chewing ability and improving the phenomenon of poor pronunciation. In addition, some of the patients with “circumcised”, because the lower incisors are located in front of the upper incisors, so that the upper incisors and even the entire maxilla forward growth is limited, if the orthodontic treatment, it will also help the development of teeth and jawbone anomalies. 2, the removal of pathological disorders: many abnormal occlusion of the teeth arrangement, often resulting in tooth decay, periodontal disease, temporomandibular joint disease and other phenomena. For example, crowded teeth, often due to cleaning the mouth, the toothbrush is not easy to brush the dead space caused by crowding, resulting in tooth decay, inflammation of the gums, and even acute pulpitis, etc.; if there are buck teeth with deep occlusion patients, often due to the lips are not easy to close, the oral salivary self-cleaning effect is significantly reduced, resulting in tartar easy to attach to the neck of the teeth, in the long term, the formation of calculus, and deep into the depths of the gums, resulting in periodontal disease, and because of the deep occlusion, the periodontitis, and the periodontitis. The deep occlusion may also cause bite wounds on the palatal side of the upper front teeth and temporomandibular joint symptoms. 3, the removal of psychological disorders: “teeth are not straight, very ugly”, “buck teeth, do not dare to smile, a smile gums are exposed”, “between the teeth have a leakage of wealth gap, and when you speak, do not dare to open their mouths too big for people to see! “The above complaints of patients are the main reasons for psychological disorders caused by abnormalities of the bite. Clinically, after orthodontic treatment, patients often have quite satisfactory cure results.