What Is Bruxism?
Bruxism is the medical term for grinding, clenching, or gnashing your teeth. It can happen while you are awake (awake bruxism) or while you sleep (sleep bruxism). The two types have different triggers and may require different treatment approaches.
During grinding, the jaw muscles contract with significant force. Normal chewing applies about 20 to 40 pounds of pressure per square inch. During bruxism episodes, that force can reach 250 pounds per square inch or more. Over time, this repeated stress damages tooth enamel, dental restorations, and the jaw joint.
Daytime Grinding vs. Nighttime Grinding
Awake bruxism and sleep bruxism are related but not identical. Understanding which type you have helps guide treatment.
Awake Bruxism
Awake bruxism is typically a clenching habit rather than grinding. It often happens during periods of concentration, stress, or frustration. People with awake bruxism may catch themselves clenching their jaw while working, driving, or dealing with a difficult situation.
Because it happens while you are conscious, awake bruxism responds well to behavioral awareness techniques. Once you become aware of the habit, you can train yourself to relax your jaw, keep your teeth slightly apart, and rest your tongue gently on the roof of your mouth.
Sleep Bruxism
Sleep bruxism is classified as a sleep-related movement disorder. It occurs during lighter stages of sleep and is often associated with micro-arousals, brief disruptions in the sleep cycle. Because it happens unconsciously, you cannot simply decide to stop.
Signs that you grind at night include waking with a sore jaw, dull headaches that start at the temples, tooth sensitivity without an obvious cavity, and a bed partner reporting grinding sounds. Your dentist may notice flattened tooth surfaces, worn enamel, or small fracture lines during a routine exam.
What Causes Teeth Grinding?
Bruxism rarely has a single cause. It typically results from a combination of factors. Identifying the contributors helps you and your dentist build an effective treatment plan.
Stress and Anxiety
Stress is the most commonly cited trigger for bruxism. Emotional stress, work pressure, and anxiety activate the jaw muscles and increase clenching, both during the day and at night. Studies show that people reporting high stress levels are significantly more likely to grind their teeth.
Sleep Disorders
Sleep bruxism is strongly associated with obstructive sleep apnea (OSA). Research suggests that up to 25% of people with OSA also grind their teeth. The grinding episodes often coincide with apnea events, where the airway partially closes during sleep. Treating the sleep apnea frequently reduces or eliminates the grinding.
Bite Misalignment and Dental Factors
An uneven bite, missing teeth, or a poorly fitting dental restoration can contribute to bruxism. When the upper and lower teeth do not come together evenly, the jaw muscles may try to compensate by grinding the teeth into a more comfortable position. An orthodontist or prosthodontist can evaluate your bite alignment.
Medications and Substances
Certain medications are linked to bruxism as a side effect, particularly selective serotonin reuptake inhibitors (SSRIs) used for depression and anxiety. Caffeine, alcohol, and recreational stimulants also increase the likelihood and intensity of grinding. If you suspect a medication is contributing, talk to your prescribing doctor before making any changes.
How to Stop Grinding Your Teeth: Treatment Options
Effective bruxism treatment usually combines protecting the teeth from further damage with addressing the underlying cause. Most treatment plans start with a night guard and then layer in other approaches based on contributing factors.
Custom Night Guards (Occlusal Splints)
A custom-fitted night guard is the most common treatment for sleep bruxism. Made from durable acrylic or a dual-layer material, the guard fits over your upper or lower teeth and absorbs the force of grinding. Custom guards from a dentist fit precisely and last longer than over-the-counter options.
A custom night guard typically costs $300 to $800, depending on the type and your location. Some dental insurance plans cover part of the cost. Over-the-counter boil-and-bite guards cost $15 to $40 but provide less protection, can shift teeth if they fit poorly, and wear out quickly.
Stress Management Techniques
If stress is a contributing factor, addressing it can reduce grinding frequency and intensity. Effective approaches include cognitive behavioral therapy (CBT), regular exercise, mindfulness meditation, and progressive muscle relaxation. For awake bruxism specifically, biofeedback devices that alert you when you clench can help retrain the habit.
Botox Injections for Bruxism
Botulinum toxin (Botox) injected into the masseter muscles, the large jaw muscles used for chewing, can reduce the force of clenching and grinding. The injections partially relax the muscle, making it physically harder to generate the damaging levels of pressure. Effects typically last 3 to 4 months before retreatment is needed.
Botox for bruxism is considered an off-label use and is generally not covered by dental insurance. Costs typically range from $500 to $1,500 per session. It is most often recommended for severe cases that have not responded to other treatments.
Orthodontic or Dental Correction
If bite misalignment is a contributing factor, correcting the bite may help reduce grinding. This could involve orthodontic treatment (braces or clear aligners) to realign the teeth, or restorative work from a prosthodontist to rebuild worn teeth and restore a stable bite. An evaluation by a specialist can determine whether your bite is contributing to the problem. Visit our /specialties/prosthodontics page to learn more about bite evaluation and restoration.
Treating Underlying Sleep Disorders
If you have symptoms of sleep apnea (loud snoring, gasping during sleep, daytime sleepiness) along with bruxism, a sleep study may be warranted. Treating sleep apnea with a CPAP machine or an oral appliance from a dentist trained in sleep medicine often reduces or resolves the grinding.
Dental Damage Caused by Teeth Grinding
Untreated bruxism causes cumulative damage that becomes more expensive to repair over time. The sooner you address grinding, the less damage your teeth sustain.
- Worn enamel: Grinding flattens the biting surfaces of the teeth and thins the protective enamel layer. Enamel does not grow back.
- Cracked or fractured teeth: The repeated force can cause teeth to crack, sometimes requiring crowns, root canals, or extraction.
- Damaged dental restorations: Fillings, crowns, and veneers can crack or come loose under grinding forces.
- TMJ disorders: Chronic grinding can damage or inflame the temporomandibular joint (TMJ), causing jaw pain, clicking, locking, and difficulty opening the mouth.
- Gum recession: Excessive clenching force can contribute to gum tissue pulling away from the teeth.
- Chronic headaches and ear pain: Tension in the jaw muscles from grinding often causes morning headaches at the temples and referred pain in the ears.
Cost of Bruxism Treatment
Treatment costs vary based on the approach and your location. Here are typical ranges.
- Custom night guard (dentist-made): $300 to $800. May be partially covered by dental insurance.
- Over-the-counter night guard: $15 to $40. Not recommended as a long-term solution.
- Botox injections: $500 to $1,500 per session, repeated every 3 to 4 months. Typically not covered by insurance.
- Orthodontic treatment (if bite correction is needed): $3,000 to $7,000 depending on the type and duration. Insurance coverage varies.
- Restorative dental work to repair damage (crowns, veneers): $800 to $1,500 per tooth. Costs vary by location, provider, and case complexity.
When to See a Specialist About Teeth Grinding
Start with your general dentist, who can evaluate wear patterns, check your bite, and fit you for a night guard. If your grinding has caused significant tooth damage, you may be referred to a prosthodontist for restorative work. If bite misalignment is involved, an orthodontist can assess whether repositioning the teeth would help.
If you have symptoms of a TMJ disorder (jaw clicking, locking, or chronic jaw pain), a prosthodontist or oral and maxillofacial surgeon can evaluate the joint. If you suspect sleep apnea, your dentist or doctor can refer you for a sleep study.
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