Tooth Grinding (Bruxism)
Grinding or clenching the teeth, often during sleep
Quick Facts
- Type: Oral and jaw (parafunctional) condition
- Common timing: During sleep, also when awake
- Common triggers: Stress, anxiety, sleep problems
- Main treatment: Mouthguard, stress management
Overview
Tooth grinding, known medically as bruxism, is the repeated grinding, gnashing, or clenching of the teeth. It can happen during the day, often without the person realizing it, or during sleep, when it is harder to control. Many people grind their teeth occasionally without harm, but frequent or forceful grinding can damage the teeth and strain the muscles and joints of the jaw.
Bruxism is common in both children and adults. Sleep-related grinding is considered a sleep-related movement behavior and is often linked to stress, anxiety, or other sleep disorders. Because it frequently happens during sleep, many people only learn they have it when a partner hears the grinding or when a dentist notices worn teeth. With the right protection and treatment of the underlying triggers, the condition can usually be controlled and tooth damage prevented.
Symptoms
Signs of bruxism range from audible grinding to subtle aches and dental wear.
- Grinding or gnashing sounds during sleep, often noticed by a partner
- Flattened, chipped, loose, or worn-down teeth
- Worn tooth enamel, exposing deeper layers and causing sensitivity
- Jaw, face, or neck soreness, especially in the morning
- Tired or tight jaw muscles, or a jaw that locks or will not open fully
- Dull headaches starting around the temples
- Disrupted sleep and, in some cases, indentations on the side of the tongue
Causes
The exact cause is not always clear, and bruxism often results from a combination of factors:
- Stress and anxiety: Emotional tension, anger, and frustration are among the most common triggers, particularly for daytime clenching.
- Sleep disorders: Sleep grinding is associated with conditions such as snoring and sleep apnea.
- Lifestyle factors: Caffeine, alcohol, tobacco, and recreational drug use can increase grinding.
- Medications: Some medicines, including certain antidepressants, can contribute.
- Bite and dental factors: An abnormal bite or missing or misaligned teeth may play a role.
In children, bruxism is common and often related to growing teeth or temporary stress, and it usually improves with age.
Risk Factors
- High levels of stress, anxiety, or a tense, competitive personality
- Younger age (it is common in children and often eases with growth)
- Caffeine, alcohol, tobacco, or recreational drug use
- Snoring or sleep apnea and other sleep disorders
- A family history of tooth grinding
- Certain medications, particularly some antidepressants
Diagnosis
A dentist usually detects bruxism during a routine examination. Evaluation may include:
- Dental examination: Looking for worn, chipped, or sensitive teeth, jaw muscle tenderness, and damage to dental work
- Symptom review: Asking about jaw soreness, headaches, sleep quality, stress, and any grinding noticed by a partner
- Monitoring over time: Tracking whether tooth wear is getting worse at follow-up visits
- Sleep study: Occasionally recommended if a sleep disorder such as sleep apnea is suspected as a cause
Treatment
Many people need no treatment, but care is helpful when grinding causes pain or damages the teeth. Treatment focuses on protecting the teeth and addressing the cause.
- Mouthguards and splints: A custom-fitted guard worn at night cushions the teeth and reduces wear and jaw strain.
- Stress management: Relaxation techniques, exercise, counseling, or therapy can reduce stress-related grinding.
- Behavior awareness: Learning to notice and relax daytime clenching, keeping the teeth apart unless eating.
- Treating related conditions: Managing sleep apnea, reviewing medications, or correcting bite problems.
- Dental repair: Fixing worn or damaged teeth once grinding is under control.
Reducing caffeine and alcohol, especially in the evening, and improving sleep habits also help.
Prevention
- Manage stress through exercise, relaxation, or counseling
- Cut back on caffeine and alcohol, particularly in the evening
- Avoid chewing gum or non-food objects, which keeps jaw muscles tense
- Practice keeping your teeth apart and jaw relaxed during the day
- Keep regular dental checkups so early wear is caught and a guard fitted if needed
When to See a Doctor
See a dentist if you notice worn, chipped, or sensitive teeth, regular jaw or facial soreness, frequent headaches around the temples, or if a partner hears you grinding at night. Early treatment can prevent lasting damage to the teeth and jaw. See a doctor as well if grinding is paired with loud snoring or pauses in breathing during sleep, which may indicate a sleep disorder.
Frequently Asked Questions
What causes teeth grinding?
Tooth grinding often results from a mix of factors, with stress and anxiety being the most common triggers. Sleep disorders such as sleep apnea, caffeine, alcohol, tobacco, certain medications, and an abnormal bite can also contribute. In children it is common and usually eases with age.
How do I know if I grind my teeth at night?
Because it happens during sleep, you may not realize it. Clues include a partner hearing grinding noises, waking with jaw soreness or headaches, worn or sensitive teeth, and a tired or tight jaw. A dentist can often spot the characteristic tooth wear during an exam.
Can teeth grinding damage my teeth?
Yes. Frequent or forceful grinding can wear down enamel, flatten or chip teeth, cause sensitivity, loosen teeth, and damage dental work. It can also strain the jaw muscles and joints, leading to pain and headaches. A night guard helps protect the teeth.
How is bruxism treated?
Treatment focuses on protecting the teeth with a custom night guard and addressing the cause, such as reducing stress, improving sleep, and cutting back on caffeine and alcohol. Treating related conditions like sleep apnea and repairing damaged teeth may also be part of care.
Does tooth grinding go away on its own?
In many children, bruxism improves as they grow and lose their baby teeth. In adults it may come and go with stress levels. Managing stress and triggers often reduces it, but a dentist should monitor for tooth damage that may need protection.
References
- Mayo Clinic. Bruxism (teeth grinding) — Symptoms and causes.
- American Dental Association (MouthHealthy). Bruxism.
- MedlinePlus, U.S. National Library of Medicine. Teeth grinding.
- Cleveland Clinic. Bruxism (Teeth Grinding).