Everyone's situation is different. According to the specific situation, various treatment schemes are different. For minors with irregular teeth, traditional orthodontics and invisible orthodontics can be selected for restoration. Beauty crown is a good technique for adult dentition. On the basis of traditional porcelain teeth, Meiguan emphasized the cosmetic effect of teeth, applied professional means to clinical crowns of dislocated teeth and deformed teeth, and finally restored them with Meiguan. General correction takes about one and a half to two years. Generally, children are faster than adults, and tooth extraction treatment takes longer than no tooth extraction treatment. Complex mistakes and deformities take longer to treat than simple ones. The correction time of skeletal deformity is longer than that of simple tooth deformity.