Apart from the most aesthetic function, from a professional point of view, the most important physiological function of teeth is to eat and chew food. If the teeth are irregular, the most important physiological functions will be affected, which will affect the whole body function. For example, teeth are the first channel of digestion, which means that food enters the digestive system first. Bad teeth are a heavy burden to the whole digestive system. It will not cause any problems in the short term, but it will cause a series of hazards such as indigestion in the long run. This is what teeth do to the whole body system. Also, uneven teeth will have their own influence. For example, it is easy to cause dental diseases such as dental caries or periodontitis.