In the absence of hospitalization, adult correction usually takes about one and a half to two years, or even longer, depending on the individual's tooth reduction and alveolar bone absorption. In addition, the cost of orthodontics cannot be generalized, which is mainly related to the hospital you choose, the doctor, the way of orthodontics and your own dental situation. As far as Shanghai is concerned, the total cost is generally more than 10 thousand yuan, but it is recommended to go to a regular dental clinic for on-site consultation. I hope I can help you.