How to Stop Teeth Grinding at Night

Waking up with a sore jaw, a dull headache, or teeth that feel unusually sensitive is often the first clue that you’re grinding your teeth overnight, which is exactly why so many people search for how to stop teeth grinding at night without ever having consciously noticed themselves doing it. Nighttime teeth grinding, known clinically as sleep bruxism, is largely an unconscious habit tied to the jaw muscles clenching and moving during sleep, and it can quietly cause real damage to your teeth and jaw joint over months or years if left unaddressed. This guide covers what causes nighttime grinding, the warning signs to watch for, and the treatments that actually work — from night guards to addressing the underlying triggers.

What Is Teeth Grinding (Bruxism)?

Bruxism is the medical term for grinding, gnashing, or clenching the teeth, and it comes in two forms: awake bruxism, which often happens during periods of concentration or stress and is at least partly under conscious control, and sleep bruxism, which happens during sleep and is classified as a sleep-related movement disorder. Sleep bruxism is the more damaging of the two for most people, since it happens with far more force than most people would ever consciously apply while awake, and it happens without the natural feedback (like jaw fatigue or pain) that might otherwise cause a person to stop.

What Causes Nighttime Teeth Grinding?

Stress and Anxiety

Elevated stress and anxiety are among the most consistently identified triggers for bruxism. The jaw muscles are one of the places the body commonly holds physical tension, and that tension doesn’t necessarily switch off during sleep, particularly during lighter sleep stages or brief arousals throughout the night.

Sleep Disorders, Especially Sleep Apnea

Sleep bruxism is strongly associated with obstructive sleep apnea. One leading theory is that grinding episodes are the body’s way of repositioning the jaw and tongue to reopen a partially obstructed airway during a breathing pause, meaning the grinding is sometimes a downstream symptom of an airway problem rather than the primary issue itself. This is one reason dentists who notice significant bruxism-related tooth wear will sometimes ask about snoring, gasping, or daytime fatigue.

Misaligned Teeth or an Uneven Bite

An irregular bite, where the upper and lower teeth don’t meet evenly, can cause the jaw to shift or grind in an attempt to find a more comfortable resting position, particularly during sleep when a person has no conscious control over jaw positioning.

Certain Medications and Substances

Some medications, most notably certain antidepressants in the SSRI and SNRI classes, list bruxism as a recognized side effect for a subset of people who take them. Caffeine, alcohol, tobacco, and recreational stimulant use have also all been associated with an increased likelihood of nighttime grinding. Anyone who develops new bruxism symptoms shortly after starting a new medication should mention it to the prescribing doctor rather than stopping the medication on their own.

Genetics

Bruxism appears to run in families to some degree, and having a close relative with a history of teeth grinding is considered a risk factor, though the exact genetic mechanisms involved aren’t fully understood.

Signs You’re Grinding Your Teeth at Night

Because sleep bruxism happens unconsciously, many people only discover it through indirect signs: a dull, aching jaw or face on waking; a persistent dull headache centered around the temples, especially in the morning; teeth that appear flattened, chipped, or increasingly sensitive to hot or cold; a bed partner who has heard grinding or clenching sounds during the night; and, in more advanced cases, visibly worn tooth enamel or small fractures that a dentist notices during a routine exam. A dentist is often the first person to identify bruxism, since the pattern of wear on the teeth is a distinctive and reliable sign even when the person grinding has no idea they’re doing it.

Why It Matters

Occasional, mild grinding usually isn’t a major concern, but chronic, forceful nighttime bruxism can cause real, sometimes irreversible problems over time: significant wearing down of tooth enamel, which can’t regenerate once lost; chipped, cracked, or loosened teeth; damage to dental work like crowns or fillings; chronic jaw pain or temporomandibular joint (TMJ) disorder, which can make chewing or even talking uncomfortable; and recurring tension headaches. The cumulative damage tends to build slowly, which is part of why many people don’t take the issue seriously until a dentist points out visible wear or a partner mentions how loud the grinding has become.

How to Stop Teeth Grinding at Night

A Properly Fitted Night Guard

A night guard, a custom or semi-custom device worn over the teeth during sleep, is the most direct way to protect teeth from grinding damage while any underlying cause is being addressed. A dentist-made custom night guard, molded specifically to your bite, generally fits more securely and comfortably than an over-the-counter “boil and bite” version, and tends to hold up better over time, though a drugstore option can be a reasonable short-term stopgap while you arrange a dental visit.

Managing Stress Before Bed

Since stress is one of the most common triggers, a consistent wind-down routine, relaxation techniques such as deep breathing or progressive muscle relaxation, and addressing significant sources of daytime stress can meaningfully reduce grinding frequency for many people, even without eliminating it entirely.

Evaluating for Sleep Apnea

Given the strong association between bruxism and obstructive sleep apnea, anyone with significant grinding alongside snoring, witnessed breathing pauses, or unexplained daytime fatigue should bring this up with a doctor. Treating an underlying sleep apnea diagnosis, often with a CPAP machine or an oral appliance, can substantially reduce bruxism in people where sleep apnea is the driving cause.

Cutting Back on Evening Caffeine, Alcohol, and Tobacco

Reducing or eliminating caffeine and alcohol in the hours before bed, and cutting back on tobacco use generally, are both associated with less severe nighttime grinding in people who consume these regularly.

Jaw Relaxation Exercises

Simple daytime habits, like consciously noticing and releasing jaw tension (keeping lips together but teeth slightly apart, rather than clenched, is a commonly recommended resting position), along with gentle jaw-stretching exercises, can help reduce overall muscle tension that might otherwise carry into sleep.

Reviewing Medications With Your Doctor

If bruxism started or worsened after beginning a new medication, particularly an SSRI or SNRI antidepressant, a doctor may be able to adjust the dose, switch medications, or add a medication specifically to counteract the side effect, depending on the situation. This should always be a conversation with the prescribing doctor rather than a decision made independently.

Other Treatment Options Worth Knowing About

For bruxism that doesn’t respond well to a night guard and lifestyle changes alone, a few additional options exist. Botulinum toxin (Botox) injections into the jaw muscles are sometimes used off-label to reduce the intensity of grinding by weakening the muscles responsible for clenching, and some dentists and specialists offer this for severe, treatment-resistant cases. Biofeedback devices, which alert a person (or, in some versions, gently interrupt the muscle contraction) when grinding is detected, are another option that’s been studied with mixed but promising results. Physical therapy focused on the jaw and neck can also help for people whose bruxism is tied to muscle tension patterns that extend beyond the jaw itself. These options are generally considered after a night guard and the more common underlying-cause treatments above haven’t fully resolved the problem, and are best discussed with a dentist or a specialist in orofacial pain.

When to See a Dentist or Doctor

It’s worth scheduling a dental visit if you notice worn, flattened, or chipped teeth; recurring jaw pain or stiffness, especially in the morning; frequent morning headaches; or if a partner has mentioned hearing grinding at night. A dentist can assess the extent of tooth wear, fit a night guard if appropriate, and refer you to a physician if signs point toward an underlying sleep disorder that needs its own evaluation.

Teeth Grinding and Aging

Bruxism can occur at any age, but the cumulative damage becomes more consequential over time, since decades of even mild grinding add up on teeth that are already dealing with other age-related changes. Combined with other common dental issues after 50 — including increased tooth sensitivity, dry mouth at night, and receding gums — unaddressed bruxism can accelerate overall dental wear and increase the risk of needing more extensive restorative dental work down the line. This is one more reason routine dental checkups matter more, not less, as you get older.

Frequently Asked Questions

Can teeth grinding go away on its own?

Sometimes, particularly if it was triggered by a temporary period of stress that has since resolved. However, bruxism tied to an ongoing cause like untreated sleep apnea, a persistent medication side effect, or a chronic bite misalignment is unlikely to resolve without addressing that underlying factor.

Do children grind their teeth too, and is it different?

Yes, childhood bruxism is fairly common and is often linked to teething, jaw growth and development, or stress, and it frequently resolves on its own as a child’s permanent teeth and jaw structure mature. Persistent or severe grinding in a child is still worth mentioning to a pediatric dentist.

Is an over-the-counter night guard good enough?

An over-the-counter “boil and bite” guard can offer some protection and is a reasonable short-term option, but it typically fits less precisely than a custom dental night guard, which can make it less comfortable and less durable over time. For ongoing, significant grinding, a dentist-fitted option is generally the better long-term choice.

Can teeth grinding cause tooth loss?

In severe, long-untreated cases, yes — chronic grinding can loosen teeth over time by placing repeated excess force on the supporting structures, and it can also crack teeth badly enough to require extraction. This is uncommon compared to milder wear-and-tear outcomes, but it underscores why early intervention matters.

How does a dentist know I’m grinding my teeth if I’ve never noticed it?

Bruxism leaves a fairly distinctive pattern of wear on the biting surfaces of the teeth that a dentist can usually identify during a routine exam, along with other signs like small fractures in tooth enamel or wear along the edges of dental work. This is why many people first learn they grind their teeth from a dentist rather than from noticing it themselves.

Stopping nighttime teeth grinding usually isn’t about willpower, since it happens while you’re asleep and largely outside conscious control. The real path forward is protecting your teeth in the short term with a properly fitted night guard while identifying and addressing whatever’s actually driving the grinding, whether that’s stress, an undiagnosed sleep disorder, a medication side effect, or your bite itself.

This article is for informational purposes only and is not medical or dental advice. It is not a substitute for guidance from a licensed dentist or doctor. Talk to a dental or medical provider about diagnosing and treating teeth grinding, especially if you notice tooth damage, jaw pain, or signs of a sleep disorder.