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 occur in stages or every night. Common causes of teeth grinding in children are: 1. Intestinal parasitic diseases The toxins produced by roundworms stimulate the intestinal tract, which will make the intestinal peristalsis speed up, causing indigestion, pain around the umbilicus and restless sleep; if the toxins stimulate the nerves and make the nerves excited, and lead to teeth grinding. Likewise 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, it is necessary to deworm early; rickets baby, to supplement the appropriate amount of calcium and vitamin D preparations. 2, excessive mental tension Many children watch thrilling fight TV at night, play excessively before going to bed, mental tension can also cause teeth grinding. If for a long time by something scolded by mom and dad, causing depression, anxiety and anxiety, is also an important reason for grinding teeth at night. Solution: Set up a comfortable and harmonious home environment for your baby, watch less TV at night and avoid excessive excitement. 3, digestive disorders children eat too much at night, sleep in the intestines accumulated a lot of food, the gastrointestinal tract had to work overtime, due to the overload, will cause involuntary grinding teeth at bedtime. Solution: diet should be meat and vegetables, change the bad habit of picky eating, dinner should be light, do not overdo it. 4, 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 muscle 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 has a picky eater, special attention should also be paid during teething, parents can make a few more patterns of food that the baby does not like to eat, try to do food. 5, poor dental growth and development during 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 ground away, and the preparation of dental pads, after wearing at night will reduce grinding.