Can Stress Cause Teeth Grinding? What the Research Shows

Can Stress Cause Teeth Grinding?

Stress is clearly one of the factors associated with bruxism.

The National Institute of Dental and Craniofacial Research lists psychosocial factors such as stress, mood, distress and nervousness among factors that appear to play a role in bruxism.

But bruxism is considered multifactorial. Genetics, medications, caffeine, alcohol, smoking and other health or behavioral factors can also be relevant.

That makes “stress causes teeth grinding” an oversimplification.

A better description is:

People experiencing greater stress appear more likely to report bruxism, but stress is neither necessary nor sufficient for bruxism to occur.

For the broader list of associated factors, see What Causes Teeth Grinding? Bruxism Causes & Risk Factors.

What Does the Research Say?

A 2020 systematic review and meta-analysis examined the relationship between psychological stress and bruxism in adults.

Six observational studies were included in the review, with three providing enough data for the meta-analysis.

In the pooled analysis, adults experiencing stress had approximately twice the odds of bruxism compared with control participants.

That sounds substantial, but there is an important qualification.

The researchers rated the certainty of the evidence as low.

The studies were cross-sectional, meaning they could identify that stress and bruxism appeared together but could not determine whether stress caused the bruxism, bruxism contributed to distress, or other factors influenced both.

Stress and Awake Bruxism

Stress makes the most intuitive clinical sense when we are talking about awake bruxism.

Awake bruxism can involve repeated or sustained tooth contact, clenching, jaw bracing or thrusting while a person is conscious.

Many people notice these behaviors while:

• Working under pressure
• Concentrating intensely
• Driving
• Responding to conflict
• Meeting a deadline
• Feeling tense or anxious

Because the behavior occurs while you're awake, you may be able to notice the pattern directly.

For example, you may realize that your teeth remain apart during a relaxed weekend but repeatedly come together during a difficult workday.

That kind of personal pattern does not prove stress is the sole cause, but it can provide useful information.

Our dedicated guide Why Do I Clench My Teeth? goes deeper into daytime clenching and habit awareness.

What About Grinding While You Sleep?

This is where the evidence becomes much less straightforward.

Sleep bruxism is jaw-muscle activity occurring during sleep. It is not simply the conscious habit of clenching continuing after you fall asleep.

A systematic review focused specifically on stress and sleep bruxism found some associations between probable sleep bruxism and self-reported stress symptoms.

Some studies also reported associations with biological markers related to stress.

However, the authors rated the certainty of evidence as very low for all outcomes.

They concluded that better-designed studies are needed before the relationship can be clearly defined.

Does Stress Disrupt Sleep and Make You Grind More?

This is often presented as fact online, but current evidence does not support such a simple chain.

Stress can certainly affect someone's perception of sleep and their overall sleep experience.

But a 2025 systematic review and meta-analysis found no meaningful differences between people with sleep bruxism and controls in objective polysomnography measures such as:

• Sleep efficiency
• Sleep latency
• Number of awakenings
• Time awake after initially falling asleep
• Sleep duration

People with bruxism did report worse subjective sleep quality, but the certainty of that evidence was very low.

So we should not automatically conclude that stress creates fragmented sleep, which then creates grinding.

Can Anxiety Cause Teeth Grinding?

Anxiety and bruxism have also been studied, but again the relationship depends partly on which form of bruxism is being discussed.

A systematic review examining anxiety and sleep bruxism found inconsistent results.

Some studies reported an association with certain anxiety symptoms, while others found no relationship with general anxiety levels.

The authors concluded that the literature was controversial and did not establish a straightforward relationship between general anxiety and sleep bruxism.

That does not mean anxiety is irrelevant.

Someone who repeatedly clenches while tense or anxious may have a very real awake-bruxism pattern. It simply means we should not assume anxiety explains every person's nighttime grinding.

How Do You Know if Stress Is Contributing to Your Clenching?

There is no dental sign that can tell you, “this grinding was caused by stress.”

Instead, look for patterns over time.

Ask yourself:

• Do I notice more clenching during demanding or emotionally difficult days?
• Do I catch my teeth touching while working or concentrating?
• Does the behavior decrease when the stressful period ends?
• Did symptoms begin around the same time as a major change in stress?
• Have medications, caffeine, alcohol, nicotine or other factors changed at the same time?

Tracking those patterns for a few weeks may give you and your dentist more useful information than simply assuming that a sore jaw must be caused by stress.

What Are the Signs of Bruxism?

Stress itself cannot be diagnosed from your teeth.

But signs and symptoms that may occur with bruxism include:

• Repeated daytime clenching or jaw bracing
• Grinding sounds noticed by a sleep partner
• Flattened or worn teeth
• Chipped or cracked teeth
• Tooth sensitivity
• Jaw-muscle soreness, tightness or fatigue
• Headache or facial discomfort in some people
• Damage to fillings, crowns or other restorations

None of these findings alone proves active bruxism, and none proves that stress is responsible.

Tooth wear can also reflect grinding that occurred years earlier.

See Warning Signs of Bruxism for a more complete guide.

Can Reducing Stress Stop Teeth Grinding?

It may help some people — particularly when awake clenching clearly increases during stressful periods.

NIDCR includes stress management among approaches that may reduce stress-related responses associated with bruxism.

Relaxation practices, counseling, exercise, meditation or other stress-management strategies may therefore be reasonable parts of an individual's overall plan.

But they should not be promoted as proven cures for bruxism.

Clinical evidence that stress-reduction techniques reliably eliminate objectively measured sleep bruxism remains limited.

Our Natural Remedies for Teeth Grinding guide separates approaches that may help from remedies that have not been proven.

The Most Practical Step for Daytime Clenching: Notice It

Awake bruxism offers something sleep bruxism does not: the opportunity to become conscious of the behavior while it is happening.

NIDCR recommends using reminders to keep the teeth apart if you grind or clench during the day.

Try an occasional phone, watch or computer reminder and simply check:

Are my teeth touching right now?

Outside of chewing, swallowing and speaking, your teeth generally do not need to remain clenched together.

The goal is not to obsessively monitor your jaw. It is to recognize an automatic behavior often enough that you can interrupt it.

What About Caffeine and Alcohol During Stressful Periods?

Stressful periods often change more than stress alone.

Someone may drink more coffee to keep up with work, have more alcohol in the evening, sleep at different hours or begin a new medication.

That matters because caffeine, alcohol, smoking and certain medications have also been associated with bruxism.

If your grinding suddenly seems worse, look at the whole picture rather than automatically assigning everything to stress.

See our research review on alcohol and teeth grinding for one example.

Can Antidepressants Complicate the Picture?

Yes.

Some medications used to treat depression, anxiety and other mental-health conditions have been reported in association with grinding or jaw clenching.

That creates an important clinical distinction.

Someone experiencing anxiety who also takes a medication associated with bruxism may have more than one plausible contributor.

Can a Night Guard Help With Stress-Related Grinding?

A night guard can protect teeth when grinding or clenching is causing damaging tooth-to-tooth contact.

What it does not do is remove stress.

And wearing one does not prove that stress caused the grinding in the first place.

The primary role of a bruxism guard is mechanical: it creates a protective surface between opposing teeth so the appliance, rather than natural tooth structure, receives much of the direct grinding contact.

A night guard should therefore be viewed as tooth protection, not as psychological treatment and not as a guaranteed way to stop bruxism.

Learn more about how mouth guards protect teeth from grinding and clenching.

When Should You Talk With a Dentist?

Consider a dental evaluation if you notice:

• Progressive tooth wear
• New chips or cracks
• Persistent sensitivity or tooth pain
• Repeated damage to dental restorations
• Persistent jaw or facial pain
• Difficulty opening the mouth normally
• Jaw locking
• A persistent change in your bite

If clenching or grinding occurs alongside loud snoring, witnessed breathing pauses, gasping or substantial daytime sleepiness, discuss possible sleep-disordered breathing with an appropriate healthcare professional as well.

Frequently Asked Questions

Can stress really cause teeth grinding?

Stress is associated with bruxism, and stressed adults have shown greater odds of reporting grinding or clenching in observational research. That does not prove that stress directly causes every case of bruxism.

Is stress more likely to cause daytime clenching or nighttime grinding?

Psychosocial factors appear particularly relevant to awake clenching and jaw bracing. The relationship between stress and sleep bruxism has also been studied, but the evidence is weaker and very low certainty.

Can anxiety make you clench your jaw?

Many people notice awake clenching during periods of anxiety or tension, and psychological factors are associated with bruxism. Research specifically linking general anxiety with sleep bruxism has produced inconsistent results.

Why do I clench my teeth when I'm stressed?

There is no single proven mechanism. Awake clenching can become an automatic jaw behavior during concentration, tension or emotional stress. Becoming aware of the pattern can sometimes help interrupt it.

Does cortisol cause teeth grinding?

Some studies have reported associations between stress biomarkers and sleep bruxism, but current evidence does not establish cortisol as a direct cause of bruxism.

Will meditation stop teeth grinding?

Meditation may help reduce stress for some people and is included among relaxation strategies recommended by NIDCR. It has not been proven to reliably eliminate bruxism, particularly sleep bruxism.

Will a night guard stop stress-related grinding?

Not necessarily. A night guard primarily protects the teeth from grinding contact. It does not treat stress and does not guarantee that grinding or clenching will stop.

Can stress make bruxism temporarily worse?

Some people notice more clenching during stressful periods, especially while awake. Tracking your own behavior over time can help identify whether there is a meaningful personal pattern.

The Bottom Line

Stress and teeth grinding are connected — but not in the simple way they are often described online.

Research consistently finds that people experiencing greater psychological stress are more likely to report bruxism. A meta-analysis found approximately twice the odds among stressed adults, although the evidence was low certainty and could not establish cause and effect.

The relationship appears especially useful clinically when someone notices awake clenching or jaw bracing during stressful situations.

For sleep bruxism, the evidence is less certain. Stress may be one factor for some people, but nighttime grinding should not simply be described as the body releasing stress while you sleep.

If stress and clenching seem to rise together, addressing stress and becoming more aware of daytime jaw behavior are reasonable steps. If grinding is damaging your teeth, dental protection can address that risk while the broader contributing factors are evaluated separately.