Teeth grinding is an occlusal disorder that disrupts the coordination of the chewing organs, so the organism removes the occlusal disorder by increasing the grinding movement of the teeth, with the result that the teeth are involuntarily ground. Teeth grinding can appear in stages or occur every night. The common causes of teeth grinding in children are: The toxins produced by roundworms stimulate the intestinal tract, which can speed up intestinal peristalsis and cause indigestion, pain around the umbilicus and restless sleep; if the toxins stimulate the nerves, they excite the nerves and cause teeth grinding. Similarly, pinworms secrete toxins and cause anal itching, which affects the child’s sleep and makes teeth grinding sounds. Parents generally believe that the culprit of teeth grinding is parasites, but in recent years, due to improved hygiene habits and conditions, teeth grinding caused by parasites has taken a back seat. Solution: intestinal parasitic disease, you need to early deworming; rickets baby, to supplement the appropriate amount of calcium and vitamin D preparations. Unbalanced nutrition Some children have the habit of picky eating, especially do not like to eat vegetables, forming a nutritional imbalance, resulting in calcium, phosphorus, various vitamins and trace elements deficiency, causing involuntary contraction of the facial chewing muscles at night, teeth will grind back and forth. Solution: The baby should eat regularly and quantitatively, and the temperature should be appropriate. During the teeth grinding period, you should let your baby eat less or try to avoid greasy, fried and spicy food, these foods are high in calories, the body is too hot, more likely to get sick. If your baby is a picky eater, you should pay special attention during teething. Parents can make more patterns of foods that your baby does not like to eat, and try to achieve a balanced intake of food, so that your baby can absorb nutrients from various foods, which can also play a role in reducing illness and strengthening resistance. Digestive disorders Children eat too much at night, sleep when the intestinal tract accumulated a lot of food, the gastrointestinal tract had to work overtime, due to the overload, will cause involuntary grinding teeth at bedtime. Solution: It is advisable to match meat and vegetables with diet, change the bad habit of picky eating, and have a light dinner, not too much. Poor dental growth and development During the period of tooth replacement, if the child suffers from rickets, malnutrition, congenital individual tooth loss, etc., so that the teeth are poorly developed, the upper and lower teeth contact will occur when the occlusal surface is not flat, is also the reason for grinding teeth at night. ‘ Solution: ask the dentist to carefully check whether there is a bad bite, if so, the high point of the teeth need to be grinded away, and the preparation of dental pads, after wearing at night will reduce the number of teeth grinding.