Doctor Reveals Four Main Causes of Teeth Grinding Beyond Dental Issues

Many individuals experiencing teeth grinding, known as bruxism, are advised by dentists to use dental guards. However, a physician suggests this approach primarily manages the symptom rather than addressing the fundamental causes, which can have far more significant impacts on overall health.

Dr. Li Sixian from Lin Hao Western Medicine Clinic explains that bruxism is a non-voluntary action controlled by the central nervous system, originating in the brainstem. The teeth are merely the point of impact, not the source of the action. He identifies four primary underlying causes: chronic stress leading to elevated cortisol levels, imbalances in dopamine and serotonin, a deficiency in magnesium, and sleep apnea.

Chronic stress is a significant contributor, with a high correlation to teeth grinding, creating a vicious cycle where grinding further elevates stress hormones. Imbalances in neurotransmitters like dopamine, which regulates involuntary movements, can also lead to bruxism. The use of SSRI antidepressants is also noted as a potential trigger. Magnesium deficiency is another factor, as magnesium is crucial for muscle relaxation, and its lack can cause jaw muscles to remain tense.

Furthermore, sleep apnea, characterized by oxygen deprivation during sleep, can trigger arousal signals from the brain, leading to jaw muscle contraction. Dr. Li advises that beyond dental guards, individuals should consider magnesium supplementation, avoiding caffeine after 2 p.m., actively managing stress, improving sleep quality, and discussing medication side effects with their doctor. He emphasizes that addressing these upstream causes is essential for genuine improvement, as the long-term health consequences of untreated bruxism and its underlying issues are far more severe than worn-down teeth.