What causes teeth grinding during sleep?

The causes of teeth grinding during sleep are diverse, primarily including the following factors: 1. Psychological factors: High levels of mental stress, excessive psychological tension, or anxiety may lead to the cerebral cortex remaining in an excited state during sleep, causing involuntary contraction of the masticatory muscles and resulting in teeth grinding. 2. Genetic factors: Teeth grinding has a certain hereditary tendency; bruxism during childhood is often related to genetic factors. 3. Oral factors: Dental problems such as poor tooth development or malocclusion may also lead to teeth grinding. 4. Systemic factors: Generalized diseases such as gastrointestinal dysfunction, hormonal imbalance, intestinal parasitic infection, and deficiencies in trace elements may also trigger teeth grinding. 5. Lifestyle habits: Overeating before bedtime, nutritional imbalance, improper sleeping posture, and similar habits may also affect the condition of the masticatory muscles during sleep, leading to teeth grinding.