Hello, during orthodontics, you can rearrange your teeth with different appliances to restore your teeth to the correct position. There are many kinds of orthodontic appliance materials: traditional straight wire (transmission straight wire appliance), semi-invisible appliance (domestic and imported), self-locking appliance (domestic and imported) and fully invisible appliance. The traditional straight wire is more economical and practical, and the correction effect is very good, but it is definitely uncomfortable to wear with other correction materials, and the time may be longer. Every stress point of its bracket is stressed by our doctor, which also tests the doctor's skill. Semi-invisible bracket correction, because many people are now considering an aesthetic problem, but the price is also within the acceptable range, then we can consider this kind of semi-invisible bracket correction, its bracket is transparent, and it can't be seen without careful staring. Usually about a year and a half. According to age and dental condition. Self-locking correction, self-locking is obvious, its bracket stress is its own principle, each tooth stress point is the same, it will be much more comfortable in the mouth than the traditional one, and the correction time will be shorter. Invisible brackets are almost invisible, just like teeth wearing protective film, which has better correction effect and convenient replacement, but the price may be more expensive. Can provide you with a reference to choose before going to the hospital.