Hello, tooth deformity will first affect the appearance and seriously affect the facial contour. Secondly, it is the damage to the teeth themselves. Uneven teeth can easily lead to unclean brushing, easy to produce dental caries and tartar, and affect the health of teeth and periodontal. Third, because the relationship between upper and lower occlusion is not good, it affects eating and chewing, which increases the burden on the gastrointestinal tract and thus affects health. Fourth, it affects pronunciation and leads to unclear articulation.