Bruxism is a condition that causes involuntary teeth grinding, gnashing, or clenching—often during sleep, though it can also occur while awake. Occasional teeth grinding is usually harmless, but frequent or severe bruxism can lead to significant dental problems, including worn enamel, tooth fractures, and jaw discomfort.

Many people with bruxism also experience other sleep-related issues, such as snoring or sleep apnea. Because bruxism often occurs unconsciously, sleep partners are sometimes the first to notice it. Dentists can frequently diagnose the condition during regular checkups by identifying signs of tooth wear, crown damage, or other stress-related changes in the mouth.

Risk Factors for Bruxism

The exact cause of bruxism isn’t fully understood, but several physical, psychological, and lifestyle factors can contribute to the condition. Bruxism is especially common in children and often resolves naturally by adolescence. Adults, however, may experience ongoing grinding or clenching due to one or more of the following:

• Jaw or bite abnormalities
• High stress or anxiety levels
• Other sleep disorders (such as sleep apnea)
• Missing, crooked, or misaligned teeth
• Excessive alcohol consumption
• Smoking or frequent caffeine intake
• Highly competitive or aggressive personality traits
• Use of stimulant or recreational drugs

Because factors like stress, smoking, alcohol, and caffeine can increase the risk of bruxism, adopting healthy lifestyle habits can make a real difference. Relaxation techniques—especially those focused on releasing tension in the jaw and facial muscles—may help reduce grinding and protect your teeth from further damage.

Symptoms of Bruxism

Chronic teeth grinding and clenching can cause significant wear and damage over time. Bruxism may wear down enamel, chip or fracture teeth, and in severe cases, even loosen them. It can also irritate the inner cheeks or tongue. Because early signs are often subtle, regular dental check-ups are essential for detecting the condition before serious damage occurs.

In many cases, a sleep partner may notice the sound of grinding at night before the individual is aware of it. However, patients may also experience one or more of the following bruxism symptoms:

• Facial or jaw pain
• Tightness or fatigue in the jaw muscles
• Difficulty opening or closing the jaw completely
• Ear pain or pressure without infection
• Headaches, especially near the temples
• Disrupted sleep or frequent waking at night
• Heightened tooth sensitivity

A clicking or popping sound when opening or closing the mouth—a common sign of TMJ disorder (temporomandibular joint dysfunction)—may also be associated with bruxism.

Treatment of Bruxism and Prevention

In addition to making healthy lifestyle changes—such as reducing stress, limiting caffeine and alcohol, and quitting smoking—there are several effective treatment options for managing bruxism. Many patients benefit from wearing a custom night guard, which creates a protective barrier between the upper and lower teeth and prevents damage from nighttime grinding.

In some cases, your dentist may recommend a muscle relaxant to ease jaw tension or improve sleep quality. For severe bruxism that doesn’t respond to conservative treatment, orthodontic adjustment or, rarely, surgical intervention may be considered to correct bite alignment and reduce muscle strain.

If teeth have already been damaged, restorative dental treatments—such as crowns, bonding, or veneers—may be needed to rebuild their natural shape and strength.

When bruxism occurs in children, it should always be discussed with the dentist. While the condition often resolves naturally as children grow, regular monitoring helps ensure early detection of any complications and protects developing teeth.

Additional Resources

MedlinePlus
National Institutes of Health
Centers for Disease Control and Prevention
Eunice Kennedy Shriver National Institute of Child Health and Human Development
U.S. Department of Health and Human Services
WebMD