If a child grinds his teeth at night, parents are very concerned about whether this is a medical condition. So, what are the reasons why babies grind their teeth at night? 1, intestinal parasites. Roundworm parasites in the child’s small intestine, not only plundering nutrients, but also stimulate the intestinal wall, secrete toxins, causing indigestion. The frequent vague pain in the child’s stomach can cause insomnia, irritability and grinding of teeth at night. Coping strategies: Practice good hygiene habits in general. Deworm your baby. 2.Eat too much and too greasy dinner. Dinner is too full and too greasy, or before bedtime to add a meal, not only affect the absorption of nutrients, but also increase the burden on the gastrointestinal tract. Because when you go to sleep, the gastrointestinal tract is still accumulating a lot of undigested food, the entire digestive system will have to “overtime”, continuous work, even the chewing muscles are mobilized, involuntary contraction, causing teeth grinding. The actual fact is that you can find a lot of people who are not able to get the best out of your own home. 3, lack of vitamin D. Children suffering from rickets, due to the disorder of calcium and phosphorus metabolism in the body, will cause bone decalcification, muscle pain and plant nerve disorders, often appear sweating, night terrors, restlessness and night grinding teeth. Coping strategy: under the guidance of the doctor to the child to supplement vitamin D, calcium tablets, usually more sunshine, night grinding situation will gradually reduce. 4, mental factors. A few children usually do not grind their teeth, but if they listen to a heart-stopping story before going to bed, or just after watching scary, tense television or cartoons, due to overexcitement of the nervous system, there will also be nocturnal teeth grinding. Another reason is stress, such as not adapting to kindergarten life, fear of a certain child in the class, arguments with parents or family members, children’s sickness to the doctor or vaccinations, etc., can make children’s mental tension, leading to children grinding their teeth at night in bed. In addition, some overactive children also grind their teeth at night. Coping strategies: Don’t let your child watch TV that is too stimulating before bedtime. Often communicate with teachers and children, if the child has a knot, help him solve it in time to relieve his psychological pressure. 5. Misalignment of teeth. Excessive force of chewing muscles or long-term chewing with one side of the teeth, as well as poor dental bite relationship, the occurrence of temporomandibular joint dysfunction, can also cause night grinding teeth. Moreover, children whose teeth are not aligned, the position of his chewing muscle is often abnormal, and the chewing muscle will often contract unconsciously during sleep at night, causing teeth grinding. Coping strategy: take your child to the dentist regularly, and do orthodontics and treatment according to the doctor’s recommendations. 6. Poor sleep posture. If the child sleeps with his head often to one side, it will cause the chewing muscles to be uncoordinated, so that the side of the chewing muscles under pressure will contract abnormally, and thus teeth grinding will occur. Children sleep with their heads covered at night, due to the excessive accumulation of carbon dioxide and insufficient oxygen supply, will also cause teeth grinding. Coping strategies: If you find that your child has a bad sleep position, help him to adjust it in time. Usually do not let your child develop the habit of sleeping with his head covered.