What does the fortune teller mean by gnashing his teeth?

Superstition about women grinding their teeth when they sleep at night

1. Psychological factors: When the brain is in a state of high excitement and tension for a long time, patients' various emotions can be subconsciously expressed during sleep, and night grinding is one of such manifestations. 2. Tooth surface factors: including tooth surface deformity, tooth loss, tooth defect or too long, unilateral chewing, etc. , can cause occlusal disorder. Therefore, in deep sleep, the body will increase the subconscious mandibular movement, and through the self-correction of molars, in order to achieve occlusal balance. 3. Other factors: parasites, blood pressure fluctuation, calcium deficiency, gastrointestinal dysfunction, genetic factors, etc. , can cause night grinding.