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Sleep

Why Do I Grind My Teeth in My Sleep?

Grinding or clenching teeth during sleep is called sleep bruxism. Stress and anxiety are the most common contributors, but obstructive sleep apnea, certain medications — especially SSRIs — and stimulant use also play a role. Most people learn they grind from a partner or dentist, who can help identify the cause.

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What is actually happening when you grind

Sleep bruxism is rhythmic, involuntary contraction of the jaw muscles — particularly the masseter — during sleep. The American Academy of Sleep Medicine classifies it as a sleep-related movement disorder 1. Unlike daytime jaw clenching, which you can catch and stop, sleep bruxism happens outside conscious awareness. The forces generated are considerable: over time, this wears down tooth enamel, cracks fillings, strains the jaw joint (the TMJ), and inflames surrounding muscles. It also tends to fragment sleep, sometimes without the person realizing why they feel unrested 1.

What drives it

No single cause explains all sleep bruxism. Several contributors are well established:

Stress and anxiety. These are the most frequently cited factors. High-stress periods are consistently associated with more severe bruxism, and anxiety disorders are commonly found alongside it 2. The mechanism is not fully understood, but the association is real.

Obstructive sleep apnea (OSA). Bruxism and OSA co-occur at rates higher than chance. One proposed explanation is that jaw clenching forms part of the arousal response when the airway narrows during sleep 3. If you grind and also snore or feel unrested, OSA is worth evaluating 3.

Medications — especially SSRIs. Selective serotonin reuptake inhibitors and related antidepressants are a well-recognized cause of bruxism, often underappreciated 4. If grinding started or worsened after a medication change, that timing is worth discussing with your prescriber.

Caffeine, alcohol, and tobacco. Caffeine consumed even several hours before bed disrupts sleep architecture in ways that can worsen movement disorders 5. Alcohol, though sedating initially, fragments sleep in its later phases and is independently associated with bruxism 6. Tobacco and recreational stimulants follow a similar pattern.

Genetics. Bruxism tends to run in families, suggesting a hereditary component on top of the modifiable ones.

In many people, more than one factor is present at the same time.

How do you know if you are doing it

Because bruxism happens during sleep, most people learn about it indirectly. Signs to watch for:

  • A partner mentions hearing grinding sounds at night
  • Waking with a sore or tight jaw
  • Morning headaches, especially at the temples
  • Increased tooth sensitivity
  • Worn, flattened, or chipped teeth — typically noticed by a dentist
  • Tenderness in the cheeks or jaw muscles
  • Pain or clicking in the jaw joint

If several of these are present, mention it at your next dental visit, or sooner if jaw pain or tooth symptoms are significant.

Does it go away on its own

Bruxism is most prevalent in children and decreases with age for many people. In adults, bruxism that begins or worsens in adulthood is more likely to have an identifiable trigger — stress, a new medication, worsening sleep quality — and is less likely to resolve without addressing that trigger. Chronic bruxism that is left unaddressed can lead to cumulative dental damage, persistent jaw pain, and disrupted sleep 1.

What helps

A dental night guard (occlusal splint). This is the most common first step. It cushions the teeth and distributes force, preventing further damage. It does not stop bruxism, but it protects against its worst consequences while you work on the underlying causes. A dentist fits the guard and assesses the degree of wear.

Stress and anxiety management. If stress is a driver — and it often is — addressing it directly can reduce bruxism. Cognitive behavioral therapy (CBT) has a well-established evidence base for anxiety and stress-related conditions 7, and the AASM recommends behavioral approaches for sleep-related problems more broadly 8. Exercise, adequate and consistent sleep, and reducing late-day caffeine and alcohol are all modifiable factors 56.

Evaluating and treating obstructive sleep apnea. If OSA is contributing, treating the apnea often reduces bruxism. The AASM guideline for OSA evaluation outlines how sleep testing is used to diagnose it 3. This is particularly relevant if you also snore, gasp during sleep, or feel unrefreshed in the morning.

Reviewing medications. If an SSRI or antidepressant appears to be the trigger, a prescriber can discuss dose adjustment, switching agents, or other clinical strategies 4. Never adjust or stop a medication without clinical guidance.

Other clinical options. For persistent or severe cases, other options exist; a clinician can discuss these based on your full picture and history.

When should you bring this up with a clinician

At a minimum, mention grinding at your next routine dental visit — a dentist is often the first to detect it from tooth wear patterns and can fit a night guard. See a primary care clinician sooner if:

  • Jaw pain is significant or limiting
  • You have symptoms suggesting sleep apnea (snoring, gasping, daytime sleepiness, unrefreshing sleep)
  • Grinding started after beginning a new medication
  • You have anxiety or stress that feels significant and unmanaged 2

A clinician may ask about stress levels, snoring history, medications, and caffeine and alcohol intake — bringing notes on all of these to your visit will make the conversation more efficient.

Common questions

Can stress alone cause teeth grinding during sleep?

Yes. Stress and anxiety are the most commonly identified contributors to sleep bruxism. Many people notice their grinding is worse during high-stress periods at work or in personal life. Stress management — including therapy, exercise, and improving sleep habits — is a legitimate part of treatment when stress is a driver.

Can my antidepressant be causing me to grind my teeth?

It can. SSRIs and related antidepressants are a recognized cause of bruxism, and this is often overlooked. If your grinding started or noticeably worsened after beginning or increasing an antidepressant, bring this up with your prescriber. There are clinical strategies available, but medication changes should always involve your prescriber.

Does a night guard fix bruxism?

A night guard protects your teeth from damage but does not stop the grinding itself. It is an important first step to prevent enamel wear, cracked teeth, and worsening jaw strain while you and your clinician work on the underlying causes. Some people use a night guard indefinitely; others find that addressing the root cause reduces the bruxism enough that the guard becomes less necessary.

Is teeth grinding related to sleep apnea?

There is a clinically meaningful association between bruxism and obstructive sleep apnea. If you grind your teeth and also snore, wake feeling unrefreshed, or have been told you gasp during sleep, OSA is worth evaluating. A sleep history and, if indicated, a sleep study can clarify whether OSA is contributing. Treating OSA, when present, often reduces bruxism as well.

Should I see a dentist or a doctor for teeth grinding?

Both can play a role. A dentist is typically the first to diagnose bruxism from tooth wear patterns and can fit a night guard and assess damage. A primary care clinician is better positioned to evaluate contributing factors — stress, sleep apnea, medications — and coordinate further workup. For most people, a dental visit is a reasonable starting point unless jaw pain, sleep symptoms, or a medication concern suggests primary care should come first.

Talk to a clinician

Nina Osei, NP — Nurse Practitioner

checkups, refills & skin. Gale can match you with a licensed clinician for a visit.

Find care →

When to seek care sooner

  • —Severe jaw pain, or the jaw locking open or shut — may indicate a TMJ disorder needing prompt dental or medical evaluation
  • —A cracked or fractured tooth causing significant pain — warrants urgent dental care
  • —Bruxism combined with loud snoring, witnessed breathing pauses, or significant daytime sleepiness — raises concern for obstructive sleep apnea, which needs evaluation
  • —Jaw pain accompanied by facial swelling, fever, or difficulty swallowing — these are not typical of bruxism and need prompt medical attention

This article is general health information and is not a diagnosis, medical advice, or a substitute for evaluation by a licensed clinician or dentist. Sleep bruxism has multiple potential causes; only a clinician or dentist who knows your full history can evaluate and guide treatment.

References

  1. 1.Watson NF, Badr MS, Belenky G, et al. (2015). Recommended Amount of Sleep for a Healthy Adult: A Joint Consensus Statement of the American Academy of Sleep Medicine and Sleep Research Society. Journal of Clinical Sleep Medicine. doi:10.5664/jcsm.4758 ✓AASM classification of sleep-related movement disorders and the impact of sleep fragmentation on daytime function; cited to ground the AASM as the authoritative body for sleep-related movement disorder classification
  2. 2.US Preventive Services Task Force (2023). Screening for Anxiety Disorders in Adults: US Preventive Services Task Force Recommendation Statement. JAMA. doi:10.1001/jama.2023.9301 ✓Anxiety as a clinically recognized condition with a meaningful association with stress-related physical symptoms; cited to ground clinical relevance of addressing anxiety in patients with bruxism
  3. 3.Kapur VK, Auckley DH, Chowdhuri S, et al. (2017). Clinical Practice Guideline for Diagnostic Testing for Adult Obstructive Sleep Apnea: An American Academy of Sleep Medicine Clinical Practice Guideline. Journal of Clinical Sleep Medicine. doi:10.5664/jcsm.6506 ✓OSA evaluation and diagnostic approach; cited to support the recommendation to evaluate for OSA in patients with bruxism plus sleep symptoms
  4. 4.Warner CH, Bobo W, Warner C, Reid S, Rachal J (2006). Antidepressant Discontinuation Syndrome. American Family Physician. PMID 16913164 ✓SSRI and antidepressant effects as recognized clinical phenomena; cited to ground the discussion of medication-induced bruxism and the importance of clinician guidance before adjusting medications
  5. 5.Drake C, Roehrs T, Shambroom J, Roth T (2013). Caffeine Effects on Sleep Taken 0, 3, or 6 Hours before Going to Bed. Journal of Clinical Sleep Medicine. doi:10.5664/jcsm.3170 ✓Caffeine's disruptive effect on sleep architecture even when consumed hours before bed; cited to support reducing caffeine as a modifiable factor in bruxism
  6. 6.Ebrahim IO, Shapiro CM, Williams AJ, Fenwick PB (2013). Alcohol and Sleep I: Effects on Normal Sleep. Alcoholism: Clinical and Experimental Research. doi:10.1111/acer.12006 ✓Alcohol's fragmentation of sleep architecture in later sleep phases; cited to support reducing alcohol as a modifiable factor in bruxism
  7. 7.Hofmann SG, Asnaani A, Vonk IJJ, Sawyer AT, Fang A (2012). The Efficacy of Cognitive Behavioral Therapy: A Review of Meta-analyses. Cognitive Therapy and Research. doi:10.1007/s10608-012-9476-1 ✓CBT's evidence base for anxiety and stress-related conditions; cited to support stress management via CBT as a legitimate treatment component for stress-driven bruxism
  8. 8.Edinger JD, Arnedt JT, Bertisch SM, et al. (2021). Behavioral and Psychological Treatments for Chronic Insomnia Disorder in Adults: An American Academy of Sleep Medicine Clinical Practice Guideline. Journal of Clinical Sleep Medicine. doi:10.5664/jcsm.8986 ✓AASM endorsement of behavioral approaches for sleep disorders; cited to support behavioral treatment framing for sleep-related bruxism management

8 sources, numbered by first appearance. General health information, not medical advice — synthetic demonstration content.