There are different methods according to the situation, for example, the effect of changing teeth is better than changing teeth, the time is shorter and the price is much cheaper. But in some cases, teeth need to be replaced before they can be corrected. For example, if the dental arch is too small, the dentition will be crowded, the deciduous teeth will be stuck, and the lips will continue to be pressed and erupted. You'd better take your child to the stomatology department for examination before ordering. It won't take long to go now, so don't ask for trouble in the future.