Extraction orthodontics is usually planned according to the type of malocclusion, if in the period of the milk teeth, located in the teeth is a polytomy, after the extraction of the teeth can be used for corrective activities with movable orthodontic appliances. Orthodontic braces are those that the patient can remove and wear on his own, and its main function is to treat the displacement of individual teeth lingually or the lack of growth and development of the jaws in the anterior convexity. However, it only improves certain localized malocclusions, but does little to straighten the teeth of the entire mouth. There is another kind of correction for multiple teeth misalignment or jaw deformity during the period of permanent dentition, usually with metal brackets glued to the teeth, with the force of wires or rubber chains to move the teeth, usually we have to wear them, usually once a month for a follow-up appointment, and only regular follow-up appointments, so that the doctor can check the removal, most of the orthodontic treatment is taken in this way. There is also a kind of invisible orthodontic, transparent braces are both beautiful and does not affect the normal eating food, and there is also the post-extraction orthodontic, need to be based on the shape of the jawbone to do the surgical treatment plan.