Orthodontic treatment process is complex, time-consuming longer to the patient’s life, work brings inconvenience, many patients want to shorten the orthodontic treatment time, but unfortunately, orthodontists will clearly tell you “impossible”, that orthodontic why it takes so long? In orthodontic treatment, malocclusion is different, the treatment plan is also different. If the teeth are mildly crowded, generally by expanding the dental arch to obtain a limited gap; if the teeth are moderately or severely crowded or anterior protrusion of the front teeth and no gap in the arch of the wrong jaw, the general use of extractions to obtain a gap; regardless of whether or not extractions, orthodontic treatment will have to go through the three phases of the braces correction for up to nearly 2 years, each phase has its own corrective objectives. First, aligning the teeth, leveling the arch curve In this stage, the use of fine and elastic flexible arch wire, so that the position of the abnormal teeth to move to the arch should be based on the normal physiological position; with the help of the arch wire on a variety of designs to improve the arch of the jaw curve is not normal; this stage generally takes 6-12 weeks to complete. Correcting the relationship between the grinding teeth, closing the front teeth and closing the extraction gap There are three ways to correct the grinding teeth, i.e., orthopedic force to promote the specific growth of the jawbone, the molar teeth are moved back, and the teeth are extracted, and different ways are taken for different cases; for the patients whose teeth are more outwardly curved, the teeth are generally extracted in order to obtain the extraction gap, and the extraction gap will be utilized for the inner closing of the front teeth to improve the protruding degree of the dental arch, and to improve the facial shape; this stage takes 6-9 months. Third, the teeth position and occlusal relationship of the micro-adjustment of the orthodontic stage, need 3-6 months Orthodontic is the doctor in the braces to exert force, traction teeth to the design of the position of the movement of up to 1mm per month, so orthodontic each stage of orthodontic due to the orthodontic program and orthodontic goals need to spend different time. In the process of orthodontic correction, the orthodontic strength should be appropriate, too small does not occur, too large is damage to periodontal tissues, and even lead to periodontal membrane degeneration, periodontal cell coagulative necrosis, and ultimately lead to tooth loss, so the process of orthodontic correction can not be rushed, or the loss will outweigh the gain. After 3 stages of orthodontic treatment, the malocclusion is restored to normal, but the corrected teeth and dentition are in an unstable state, with a tendency to revert to the pre-corrected state, so it is necessary to wear a retainer for 1-2 years for maintenance.