Hello, before plastic surgery, you should go to the stomatology department of a regular hospital for a check-up. The doctor will arrange a series of routine dental examinations for you, such as blood test, dental radiography, face-to-face photography, dental health, etc., and tell you whether it is suitable for plastic surgery and the time and specific cost of treatment, and then make a detailed treatment plan according to your own specific situation. The treatment time varies from person to person. Pre-orthodontic expenses generally account for about one-third of the total expenses.