Different practices have different costs. Invisible orthodontics requires high skills and materials for doctors, and the total cost is 30 thousand to 40 thousand. Because everyone's tooth deformity is different, the treatment difficulty is different and the cost is different. The pre-treatment of orthodontics includes examination, X-ray, design, tooth separation, bracket bonding, and some may need tooth extraction. Pre-orthodontic expenses generally account for about one-third of the total expenses.