When you grind your teeth when you sleep, the upper and lower teeth make a noise, which is what you call grinding your teeth every day. Sleep molars are caused by the continuous contraction of masticatory muscles, and the movement of masticatory muscles is dominated by trigeminal nerve, so all factors that can affect trigeminal nerve and masticatory muscles can cause sleep molars. It is more common in children, which is related to many factors: 1) excessive mental excitement and tension, excessive play before going to bed, excessive excitement or fatigue, or panic, anxiety, or anxiety about learning, which makes the excitement and inhibition of the cerebral cortex out of balance, induces temporary irregular spasm or contraction of masticatory muscles, and produces night molars. 2) Ascaris lumbricoides, an intestinal parasitic disease, likes to move in the intestine after children fall asleep and secrete a variety of toxins. Toxins stimulate the intestinal tract, accelerate intestinal peristalsis, cause indigestion, periumbilical pain and restless sleep; If the toxin stimulates the nerve, it will excite the nerve and cause molars. Similarly, pinworm will secrete toxins, cause anal pruritus, affect children's sleep and make the sound of grinding teeth. 3) Digestive dysfunction, such as overeating before going to bed, a lot of food fills the gastrointestinal tract and stimulates the digestive tract. Nerves transmit these stimuli to the brain, and the brain manages the digested brain cells through reflex stimulation, causing molars. 4) Unbalanced nutrition Some children have the habit of picky eaters, especially those who don't like vegetables, which leads to unbalanced nutrition and lack of calcium, phosphorus, multivitamins and trace elements, resulting in involuntary contraction of facial masticatory muscles at night and teeth grinding back and forth. 5) Other occlusal disorders, chronic periodontitis, psychomotor epilepsy, hysteria, or dreaming to eat when changing teeth can all cause nocturnal molars. ● Grinding your teeth for a long time will affect your sleep. Grinding teeth makes the face excessively tired, which will cause pain in the mandibular joint and local muscles when eating and talking, and the mandibular joint will make a noise when opening the mouth. Damage to the teeth themselves. Because the enamel is damaged, it causes dentin hypersensitivity, and it will cause toothache when it encounters cold, heat, acid and spicy. When grinding teeth, the masticatory muscles will contract continuously. Over time, the masticatory muscles will become thicker and the lower end will become larger, and the child's face will also change. Some people have never been corrected as children, and may have the habit of grinding their teeth all their lives. Therefore, if the phenomenon of grinding teeth is found, it is necessary to treat the symptoms quickly. ● If the child has intestinal parasites, remove them as soon as possible. Commonly used anthelmintics include Quyiling, Anleshi, Changchongqing and levamisole. Children with rickets should be supplemented with appropriate calcium and vitamin D preparations; Give children a comfortable and harmonious family environment, so that children can watch less TV at night and avoid excessive excitement; Diet should be mixed with meat and vegetables, and the bad habit of picky eaters should be changed. Dinner should be light, not excessive. Ask the dentist to examine carefully whether there is malocclusion. If there is, it is necessary to grind off the high points of the teeth and prepare a tooth pad, which will reduce the grinding of teeth after wearing it at night. ● Traditional Chinese medicine believes that grinding teeth at night is mostly related to food shock, so it is decocted with Rhizoma Phragmitis 30g and Rhizoma Coptidis1.5g.. If you can't sleep at night, add Polygonum multiflorum Thunb. 10g, indigestion plus stir-fried rice sprouts 10g, one dose per day. It can also be used for clearing food, invigorating spleen and regulating stomach, such as Shen Ling Bai Zhu Powder, reducing shock, and taking sedative drugs such as cinnabar. Acupuncture at Hegu and other points also has certain curative effect. Is it sick to grind teeth at night? How to prevent it? Some people often giggle when they sleep at night, but they don't know when they get up in the morning. Medicine calls this kind of grinding nocturnal bruxism. Night grinding is a phenomenon, not a disease, just like dreaming and talking in your sleep. Excessive emotional tension or excitement, bad occlusion habits, intestinal parasite infection, etc. , often increase the number of night molars. Severe bruxism will accelerate tooth wear, lead to symptoms of tooth allergy, and even cause periodontal tissue damage, masticatory muscle fatigue and temporomandibular joint dysfunction. The prevention and treatment of nocturnal molars should start from the etiology in order to get good results. (1) Eliminate nervousness and unnecessary worries, be open-minded and arrange work reasonably. If necessary, take diazepam orally, 1-2 times a day, 1 time, each time 1 tablet. (2) Develop good living habits and rules, don't eat too much for dinner, and don't do strenuous exercise before going to bed, especially for children. (3) Those who are suspected to have intestinal parasites should be treated with deworming under the guidance of a doctor to reduce the peristalsis of intestinal parasites and stimulate the intestinal wall. (4) Correct the bad habits of the oral system, such as unilateral chewing, pencil biting, mistakes, etc. (5) If the above treatment is still not improved, dentition pad should be made in stomatological hospital, put on the dentition before going to bed at night and take it off in the morning. Pad can eliminate interference and relieve muscle tension. Generally speaking, grinding teeth at night is considered as a sound, but it can be divided into grinding teeth and clenching teeth professionally and academically. The former has sound, while the latter has no sound. You don't have to grind your teeth very hard, but when you bite, all the muscles of your head, cheeks, neck and shoulders contract together, just like describing a person gnashing his teeth with anger. There are fewer people who grind their teeth than those who grind their teeth, and the percentage should be in single digits; However, biting may be a phenomenon that everyone has. People in China have long noticed this phenomenon, and they have created the idiom "bite the bullet", which seems to be absent in English. Every time the stock goes down, the headline of the newspaper is "bullet". Most people think that grinding teeth is shameful, but people who have no voice should not laugh with their voices. As far as muscle and joint injuries are concerned, silence is better than sound. Grinding teeth at night can lead to tooth wear, pain, sensitivity and inability to chew. Headache, neck and shoulder pain, jaw joint injury, but most people's motivation for seeking medical treatment is only to eliminate the sound. At present, the treatment mainly focuses on the so-called occlusal plate, commonly known as braces and dental plates. Occlusal plate intraoral device, usually made of transparent acrylic resin, can be worn on the teeth of maxilla or mandible instead of teeth to reduce sound. It can also reduce joint pressure. However, the bite plate itself can't stop the grinding action, which can be said to be a temporary solution rather than a permanent cure. The cause of night grinding is still unclear, and the nerve transmission and control are also unclear. Compared with Parkinson's disease, it can be said that it is ignorant, so it is still hopeless. Folk or Chinese medicine believes that there is ascaris in the anus, which may come from children grinding their teeth at night. It was also common for children to have ascaris before. But now children can't find ascaris in their anus, and grinding their teeth at night is still very common. It is confirmed by clinical language rescue that grinding teeth at night is related to high pressure. Therefore, paying attention to stress therapy, relaxing muscles and improving sleep should help to improve night grinding, but there is no evidence that sleeping pills have this effect. On the contrary, some tranquilizers that soothe the nerves and remove coke may make muscles move spontaneously without oil, from jaw shaking, similar to chewing to grinding teeth. Some antidepressants are used to suppress molars, but there are also reports that antidepressants can cause molars. At present, the popular secret recipe for wrinkle removal, toxoid, has also tried to inhibit molars. Many parents will ask: My child is only three years old, where does the pressure come from? It seems common for children under the age of six to grind their teeth, and the possible reasons can be explained from two aspects. One is that the nervous system of infants is not yet mature, and it is easy to wake up when sleeping; One is that the occlusal surface of deciduous teeth is like a washboard, which is very flat but carved, and it is easier to grind than permanent teeth. In addition to listening to the sound when grinding your teeth, you can also observe your teeth. You don't have to grind your teeth, because grinding your teeth starts from a little bit, so it is the correct judgment to observe whether the teeth have a shiny occlusal surface. Tooth enamel is very hard, only slightly lower than diamond, so its worn surface will shine like a diamond cut surface. In addition, the alveolar bone around the root will thicken into an annular bulge due to occlusion. Tooth marks on the edge of the tongue are biting phenomena. You can observe the edge of the tongue, whether there are continuous tooth marks, and whether the inside of the cheek is bald and white along the occlusal surface of the teeth. These two phenomena may be caused by the forced contraction of the tongue and cheeks and the squeezing with teeth when biting. Many people don't understand, thinking that it is tongue rot or teeth are too good or even cancer. In addition, observing the face shape is also one of the methods. Tight bite means that the masseter muscles will be developed, and the bones in the chin angle will become larger, forming a national character face. Some people turn to plastic surgery, but in theory it will inevitably recur. In short, there is no need to panic when grinding your teeth at night; Under the age of six, you don't need to see a doctor, and you may disappear automatically, and there is nothing you can do to see a doctor; No pain, discomfort or need for treatment. However, many perennial headaches and neck pains may come from grinding teeth, which can be improved through a complete course of treatment such as comprehensive occlusal plate, muscle relaxation, stress relief and lifestyle change. If the teeth are worn and sore, they can be directly protected by denture crowns. How can you not grind your teeth? 1. Keep your oral health at rest during the day, that is, keep your teeth loose, preferably with your lips together and your teeth apart. 2. Biting apples or raw radishes makes the upper and lower jaws tired, which can calm the mouth. 3. Hot compress on your upper and lower jaws can relax your occlusal muscles and reduce the chance of headache. You can buy mouthguard in sporting goods store. Helps prevent grinding teeth at night. 5. Grinding teeth has the greatest relationship with stress, so relaxing is the best way. 6. Reduce the intake of caffeine and refined carbohydrates. 7. Take a hot bath. 8. Be tolerant of yourself. 9. Learn relaxation methods, such as meditation or gradual relaxation.