1, affect the facial beauty. 2.Because of bad bite, it affects eating, aggravates gastrointestinal burden and affects health. 3.It is easy to accumulate food residues to form tartar, which will lead to tooth decay, periodontal inflammation, bad breath and other problems. 4, affect the child’s physical and mental development. Some children are ridiculed by their classmates or peers because of their unattractive teeth, thus becoming inferior and affecting their mental health. I hope that all patients and parents can pay attention to their own teeth and their children’s teeth, have regular checkups, give themselves and their children a pair of neat, healthy and beautiful teeth, and gain self-confidence.