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What causes teeth grinding or clenching during sleep?

Sep 07, 2024 Source: Cainiu Health
Dr. Liu Chao
Introduction
In most cases, teeth grinding or clenching during sleep is caused by stress and anxiety, poor lifestyle habits, periodontitis, Parkinson's disease, epilepsy, etc. When a person is in a state of tension or anxiety, the brain releases cortisol, leading to muscle tension. Especially during sleep, sustained facial muscle tension may manifest as nocturnal teeth grinding.

Bruxism (teeth grinding or clenching during sleep) is typically caused by stress and anxiety, unhealthy lifestyle habits, periodontitis, Parkinson's disease, epilepsy, and other factors. If discomfort occurs, it is advisable to seek medical attention promptly. Specific causes are analyzed as follows:

1. Stress and Anxiety

When under stress or anxiety, the brain releases cortisol, leading to muscle tension. Especially during sleep, sustained facial muscle tension may manifest as nighttime teeth grinding. Techniques such as deep breathing, yoga, and meditation can help reduce stress.

2. Unhealthy Lifestyle Habits

Poor lifestyle habits—such as smoking, alcohol consumption, and excessive caffeine intake—can stimulate the nervous system, causing involuntary muscle contractions during sleep and resulting in bruxism. It is recommended to adjust lifestyle behaviors by reducing or avoiding smoking, drinking alcohol, and consuming stimulants like caffeine.

3. Periodontitis

Periodontitis is caused by factors such as smoking, dental plaque, and tartar buildup. When periodontal tissues become infected or atrophied, tooth support weakens, affecting chewing function and tooth positioning. This may lead patients to unconsciously clench or grind their teeth in an attempt to achieve comfort. Symptoms often include gum bleeding, loose teeth, and periodontal pocket formation. Treatment may involve medications such as cefixime capsules, cephalexin capsules, or cefuroxime axetil tablets, used under a doctor’s guidance.

4. Parkinson’s Disease

Parkinson’s disease is a neurodegenerative disorder associated with genetic factors, environmental influences, and aging of the nervous system. It may cause symptoms such as muscle rigidity and tremors, which can affect the contraction of chewing muscles and lead to teeth grinding. Other common symptoms include hand tremors, unsteady gait, and reduced facial expression. Medications such as levodopa tablets, pramipexole hydrochloride tablets, and carbidopa-levodopa combination tablets may be prescribed under medical supervision.

5. Epilepsy

Epilepsy is related to sleep, age, genetics, and other factors, and may result in central nervous system dysfunction that triggers bruxism. Typical symptoms also include seizures, impaired consciousness, and foaming at the mouth. Treatment should follow medical advice and may include medications such as carbamazepine tablets, sodium valproate oral solution, and phenytoin sodium tablets.

It is recommended to develop healthy作息 habits, ensure sufficient sleep, and manage underlying conditions, which may help alleviate bruxism symptoms.

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