Teeth grinding is not a normal phenomenon, it is a pathology. People change their milk teeth between the ages of 12 and 14 years old and may have mild teeth grinding during this time because of itchy gums, but it is a pathology if the grinding continues after the teeth change or is severe during the teeth change. When teeth grinding occurs, it should be treated promptly, and adults should avoid other secondary diseases caused by grinding teeth. Children should pay more attention to it, it will affect the child’s local development, destroy the child’s dental aesthetics, some children may even be introverted, depressed, etc.. Try to avoid drinks or foods that contain caffeine. Try to avoid things like coffee, chocolate, cola, etc. Eat more foods rich in vitamins. Common causes in children: 1, intestinal parasitic diseases, especially intestinal roundworm disease, quite common in children; 2, diseases of the gastrointestinal tract, oral diseases; 3, before going to bed to the child to eat indigestible food, so that after the baby sleep are likely to stimulate the corresponding parts of the brain, through the nerve caused by continuous contraction of the chewing muscle; 4, neurological diseases, such as psychomotor epilepsy, hysteria, etc.; 5, children during the day emotional Excitement, excessive fatigue or emotional tension and other mental factors. 6, lack of vitamins, suffering from vitamin D deficiency rickets children, due to the body calcium, phosphorus metabolism disorders, will cause bone decalcification, muscle pain and plant nerve disorders, often sweating, night terrors, restlessness and night grinding teeth. 7, the teeth are not aligned, the chewing muscle force is too large or long-term chewing with one side of the teeth, as well as the teeth bite relationship is not good, the occurrence of temporomandibular joint dysfunction, will also cause night grinding. Moreover, children with unevenly aligned teeth, the position of his chewing muscle is often abnormal, and the chewing muscle will often contract unconsciously during sleep at night, causing teeth grinding. 8, cute and naive little baby Some children due to grinding teeth for a long time, although by the corresponding treatment, but because the cerebral cortex has formed a solid conditioned reflex, so the night grinding action will not disappear immediately, especially gastrointestinal disease although there is improvement, but gastrointestinal dysfunction still exists, so the grinding action can not be corrected in a short period of time, must adhere to a longer period of treatment to get better.