Senior student Xiao Li thinks her teeth are not aligned, commonly known as “buck teeth” is very ugly, hoping to have a quick orthodontic treatment to improve the appearance. She went to the “German dentist” clinic that advertised itself as being able to quickly straighten teeth, and indeed her teeth were aligned quickly. But the effect Xiaoli is not satisfied, Xiaoli to the regular specialist hospital, experts told Xiaoli, her fast orthodontic is through the rapid crown truncation of the front teeth inferior porcelain crown repair, that is, the installation of dentures. The reason for Xiaoli’s unattractive face is the protrusion of the upper jaw, that is, the protrusion of the bones, so fast teeth alignment, the face is still protruding. Xiao Li should first orthodontic treatment to align the upper and lower teeth, through orthognathic surgery jaw bone put in a normal position to improve the appearance. Xiao Li’s “fast orthodontic” also brings great difficulties for the surgery, because the surgery relies on the positioning of the reference point on the missing front teeth, greatly affecting the results after the surgery. Xiao Li regrets that she should not have listened to the “fast correction”.