
What causes teeth grinding?
My roommate says that I often grind my teeth at night for a long time, and I never knew I had this problem before. I would like to know what causes teeth grinding.

Bruxism, also known as "teeth grinding" or "nocturnal bruxism," is a common habitual oral behavior. The causes of bruxism are multifactorial, involving physiological, psychological, and environmental factors.
1. Physiological factors: When the upper and lower teeth are misaligned, the body may attempt to achieve balance through teeth grinding. In addition, abnormal development of the nervous system may also cause bruxism.
2. Psychological factors: Stress and anxiety are common psychological factors contributing to bruxism. Under conditions of high tension or anxiety, the body may use teeth grinding as a way to release stress, although this behavior is usually unconscious.
3. Genetic factors: Bruxism may have a genetic predisposition. If there is a family history of bruxism, an individual's risk of developing the condition may increase.
4. Lifestyle habits: Long-term biting of hard objects, excessive excitement before bedtime, and similar habits may also lead to teeth grinding.
If bruxism symptoms persist over a long period, patients should seek medical attention promptly. Maintaining healthy lifestyle habits and a positive mental state can also help alleviate bruxism symptoms.