Teeth are not aligned harm a lot, one of the biggest is to affect the aesthetics, we often see a lot of people, such as the sky or even lips can not wrap the teeth, teeth are exposed to the outside, which will affect our oral and maxillofacial aesthetics; Secondly, the teeth are not aligned to affect the local function of the teeth are not aligned generally accompanied by the upper and lower teeth of the occlusion of abnormalities, occlusion abnormalities affect the oral localization of the oral cavity, oral teeth of the masticatory function; Disharmony affects our local oral hygiene, oral hygiene, such as our brushing will be affected, teeth are easy to caries. Another is prone to periodontal disease, periodontal disease development process due to dental irregularities, which is mainly dental irregularities is one of the main reasons, resulting in the teeth are not easy to clean, the teeth are attached to plaque, calculus, resulting in the bacteria on the reproduction, the release of harmful substances corrosion of teeth leading to dental caries, and at the same time, these harmful substances is to stimulate the gums, causing damage to the alveolar bone, and at the same time, the gradual development of periodontal disease The periodontal disease gradually develops, causing the teeth to loosen or even fall off.