Teeth grinding in children usually refers to the upper and lower teeth rubbing against each other, usually occurring at night during sleep. There is no small trick to treat the symptoms of nighttime teeth grinding, and professional treatment is needed according to the cause: 1. Permanent teeth growth: a common cause of teeth grinding in children is that the permanent teeth start to grow, leading to nighttime teeth grinding reaction. Treatment can be carried out through the occlusal plate to avoid tooth abrasion and protect the hard tissues of the dentition, reduce the reduction of occlusal height, and at the same time, make the occlusion in a relatively stable state, to prevent over-activity of the chewing muscles, in order to alleviate the symptoms of nighttime teeth grinding; 2, malocclusion: malocclusion is also a common cause of teeth grinding, when the upper and lower jaw occlusal relationship is abnormal, the probability of children’s teeth grinding will also be increased. It is recommended to go to the hospital for orthodontic treatment, you can wear orthodontic appliances to make the teeth aligned, the upper and lower jaw bite relationship back to normal, in order to alleviate the symptoms of nighttime teeth grinding; 3, lack of nutrients: children in the process of growth and development, the body’s nutrient demand is relatively large, usually a lack of calcium, vitamin deficiency, which can lead to the grinding of teeth. Need to be examined in the hospital, under the guidance of the doctor, appropriate amount of vitamins and calcium and other nutrients, comprehensive treatment of children grinding teeth; 4, genetic factors: is a reason that can not be ignored, night sleep teeth grinding is common parents have teeth grinding, the child more also have teeth grinding situation. You can use botulinum toxin, clonazepam and other drugs under the guidance of the doctor for treatment to relieve the tension of the masticatory muscles and reduce the occurrence of teeth grinding. In addition to the above allopathic treatments, physical and psychological treatments can also be used. Because prolonged grinding or clenching of teeth will cause contraction of the masticatory muscles, resulting in muscle hyperfunction, which in turn will cause pain, soreness and other symptoms, and may lead to muscle tissue damage; the masticatory muscles can be massaged through physical therapy to reduce the muscle tension and relax the muscle fibers, to achieve the effect of relieving the pain and alleviating the symptoms of teeth grinding. Anxiety and stress can also be reduced through psychological counseling, hypnosis, and relaxation training, which in turn can reduce the symptoms of teeth grinding.