I am 25 years old. My upper incisors are severely protruding and my lower incisors are slightly protruding. How much does it cost to do correction in Guilin? How long has it been? Is there that kind of shadow? ... First of all, it takes 2-3 years to become an orthodontist, and it takes a long time to wear a retainer for 2-3 years, and it is easy to relapse (individual differences are different, I will say serious cases) and the cost is relatively high, about 10,000 to 20,000. For reference only. But there are still many people who choose orthodontics. Can still do it at the age of 25.