This is indeed a corrective method, which may need to be combined with dental tablets. However, these are prerequisites. If the teeth are crowded seriously, if the teeth are not extracted and corrected, even if the arch is expanded and sliced, the mouth may still be a little protruding after correction, which is not very good. Secondly, if slicing is bad for teeth, because if it is not cleaned well, it is easy to have dental caries, dentine hypersensitivity. In fact, tooth extraction correction is very common. For crowded situations, there will be no sequelae and it will not affect your daily diet. Because there are pairs of teeth, such as No.4 bite and No.5 tooth, the functions of the two teeth are the same, and pulling out one tooth will not affect its functions. Secondly, sometimes extraction orthodontics will help to change the arrangement and surface morphology of teeth. So don't worry too much about this problem. You can refer to this popular science article:/hzcjwt/wsmyxjzycs _1.html I hope I can help you, thank you!