Orthodontic orthodontic treatment uses biomechanical principles for the correction of malocclusion. That is, a gentle and long-lasting biological force, i.e., a force value of 20 to 26 grams per square centimeter, is applied by the orthodontic system to accomplish the movement of the teeth without damaging the health of the teeth and their surrounding tissues. Orthodontics: Through aligners such as stainless steel brackets and ceramic brackets, mechanical forces are applied to the teeth to align them and restore them to a normal bite. Advantages and disadvantages analysis: orthodontics can achieve both the role of oral and facial aesthetics, but also improve chewing, pronunciation and other functions, but orthodontics is a long-term treatment process, at least two or three years, so before orthodontics patients should do some consultation to understand the whole process and costs, while in the process, chewing, pronunciation and even dental aesthetics will be affected to a certain extent, and often need to go to the hospital for follow-up These factors need to be considered. There is no strict age limit for orthodontics. After the teeth are completely replaced with permanent teeth at the age of 12 to 13, the alignment and alignment of the teeth are relatively stable and can be orthodontic. In addition, systemic diseases such as hyperthyroidism, diabetes, tuberculosis, mental illness, etc. are generally not suitable for orthodontics, and severe malnutrition and pregnant women are also not suitable for orthodontics.