USA
Canada
UK
Italy
Sweden
Australia
Quick answer: can you stop grinding your teeth?
Teeth grinding, known medically as bruxism, usually can't be switched off overnight, but it can be managed well. The two priorities are protecting your teeth from further damage — most often with a custom night guard — and dealing with the triggers behind it, which are commonly stress, disrupted sleep and lifestyle factors. Worn or chipped teeth, tooth sensitivity, jaw ache and morning headaches are all reasons to get checked by a dentist rather than wait it out.
Most people don't realise they grind their teeth. It often takes a partner kept awake by the sound, or a dentist pointing to flattened, worn edges at a check-up, before the penny drops — and by then the habit may have been going on for months or years. The reassuring part is that bruxism is very manageable once you understand what's driving it and how to shield your teeth while you tackle the cause.
This guide covers what bruxism actually is, how to spot the signs, what causes it, how night guards help, and the wider steps that reduce grinding for good. Because grinding often overlaps with jaw and bite issues, it sits alongside our guides to jaw pain and the TMJ, sensitive teeth and how stress affects your oral health.
What is bruxism?
Bruxism is the involuntary grinding, gnashing or clenching of the teeth. It is extremely common, affects children and adults alike, and often happens without the person being aware of it. Clinicians usually split it into two types, and it's possible to have both.
Sleep bruxism
This happens during sleep and is classed as a sleep-related movement behaviour. Because it's unconscious, the forces involved can be far higher than anything you'd apply while awake, which is why sleep grinders often wake with a tired or aching jaw and don't know why.
Awake bruxism
This is the clenching or jaw-tensing many people do during the day, often while concentrating, driving or under stress. It tends to involve more clenching than side-to-side grinding, and once you're aware of it, it's easier to catch and interrupt than the sleep type.
In short: awake bruxism is usually driven by stress and concentration and is easier to notice; sleep bruxism is unconscious, often forceful, and is the type a night guard is most commonly prescribed for.
Signs and symptoms of teeth grinding
Some signs you'll notice yourself; others are usually spotted by a dentist or a sleep partner. The more of these that sound familiar, the more worthwhile a check-up becomes.
- Teeth that look flat, worn or shortened, or that have become more sensitive.
- Small chips, cracks or fractures, or fillings and edges that keep breaking.
- A dull morning headache, often felt around the temples.
- Jaw ache, tightness or muscle fatigue, especially first thing in the morning.
- A clicking, tender or stiff jaw joint when you open wide or chew.
- Aching that feels like earache but with no ear problem behind it.
- Increased tooth sensitivity to hot, cold or sweet.
- Ridges or indentations along the side of the tongue, or a ridge of thickened skin inside the cheeks.
- A partner reporting a grinding or gnashing sound during the night.
- Disturbed sleep — your own, or theirs.
Uneven enamel wear is also one of the quieter long-term effects of an untreated bite or grinding habit, which we cover in our guide to the long-term effects of untreated misalignment.
What causes bruxism?
Bruxism rarely has a single cause. For most people it's a combination of factors, and the mix matters because it decides what actually helps.
- Stress and anxiety. The most common driver of awake bruxism, and a strong contributor to the sleep type. Periods of pressure, worry or poor sleep often coincide with flare-ups.
- Sleep factors. Sleep bruxism is linked to brief arousals during the night and can occur alongside conditions such as snoring and sleep apnoea, which is why persistent grinding sometimes warrants a look at your sleep.
- Lifestyle. Caffeine, alcohol, smoking and recreational drugs are all associated with more grinding, particularly in the evening.
- Certain medications. Some prescription medicines, including a number of antidepressants, list bruxism as a possible side effect. Never stop a medication yourself — raise it with your GP.
- Your bite and dental factors. The way the teeth meet was once blamed heavily for grinding. The evidence is now more nuanced, but crowding, missing teeth or uneven contacts can still play a part in how the load is distributed.
- Genetics and age. Bruxism can run in families, is common in children as they grow, and often eases with age.
The most modifiable factor is usually stress. If your grinding tracks with stressful spells, the techniques in our guide to stress and oral health are a sensible first line, alongside protecting the teeth.
Why teeth grinding matters beyond the noise
Left unmanaged, grinding is a slow, cumulative problem. The forces are small each night but relentless, and the damage rarely reverses on its own. The two types show up slightly differently.
| Sleep bruxism | Awake bruxism | |
|---|---|---|
| When it happens | During sleep, involuntarily | Daytime, often while concentrating or stressed |
| Are you aware of it? | Usually not — often reported by a partner | Sometimes, once you learn to notice it |
| Typical pattern | Forceful grinding and clenching | More clenching than grinding |
| Common signs | Morning jaw ache, headaches, worn teeth, disturbed sleep | Jaw tension, tooth sensitivity, tension headaches |
| Main line of management | Custom night guard plus addressing sleep and stress | Daytime awareness, stress management, habit reversal |
Over time the consequences can include flattened and shortened teeth, cracks and chips, worn or broken fillings, increased tooth sensitivity, gum recession, and strain on the jaw muscles and joint. Persistent jaw symptoms are where grinding overlaps with the temporomandibular joint (TMJ), and are worth having assessed rather than pushing through.
A night guard doesn't stop you grinding. It changes what your grinding wears down — a replaceable piece of plastic instead of your own enamel.
Night guards: how they help and which type to choose
A night guard, also called an occlusal splint or bite guard, is a custom cover worn over the teeth during sleep. It doesn't cure grinding, but it absorbs and redistributes the force, protecting the enamel and easing the load on the jaw muscles. There are broadly two routes, and they are not equal.
Custom night guard
Made from an impression or 3D scan of your teeth, so it fits precisely and is built to withstand grinding forces.
- Accurate fit and comfortable to sleep in
- Durable materials matched to how hard you grind
- Fitted and reviewed by a dental professional
- Longer-lasting, though a higher upfront cost
Boil-and-bite or stock guards
Cheaper and available over the counter, but moulded roughly at home or not at all.
- Lower cost and immediately available
- Looser, bulkier fit that can disturb sleep
- Wears through faster under heavy grinding
- No clinical check of your teeth or jaw
For anything more than very occasional grinding, a dentist-made guard is the safer choice. It's fitted after your teeth and jaw have been assessed, which matters — an ill-fitting guard can occasionally change how the teeth meet or move them slightly, which is the last thing you want.
Important: a night guard is not the same as an orthodontic retainer, and the two shouldn't be swapped. Retainers are thin and designed to hold teeth in place, not to take grinding forces. Don't use a retainer as a night guard, or vice versa, without your dentist's say-so — you can read what retainers are actually for in our guide to retainers after clear aligner treatment.
How to reduce grinding, not just cushion it
A guard protects your teeth, but it doesn't address why you grind. Reducing the habit itself means working on the triggers — usually in combination.
- Tackle stress. Relaxation routines, exercise, and a wind-down before bed all help. If anxiety is persistent, it's worth raising with your GP.
- Protect your sleep. A consistent sleep schedule and a screen-free wind-down reduce the night-time arousals linked to grinding. Persistent snoring or daytime tiredness deserves a proper look.
- Ease off evening triggers. Cut back on caffeine and alcohol later in the day, and stopping smoking helps here as it does elsewhere. Our list of everyday habits that damage teeth has more.
- Build daytime awareness. For awake bruxism, a simple cue — lips together, teeth apart, jaw relaxed — repeated through the day breaks the clenching habit.
- Review medications. If grinding started after a new prescription, mention it to your GP or dentist rather than changing anything yourself.
- Get the underlying dental picture checked. A dentist can assess your teeth, bite and jaw and advise whether anything about how your teeth meet is contributing.
Bruxism, your bite and misaligned teeth
People often ask whether crooked teeth cause grinding, or whether straightening them will stop it. The honest answer is that the link is real but limited, and it's easy to overstate.
Grinding is primarily driven by stress and sleep factors, not by the bite alone, so clear aligners are not a treatment for bruxism and shouldn't be sold as one. That said, crowding, missing teeth or uneven contacts can affect how grinding forces are spread across the teeth, and a heavily worn, crowded bite is worth reviewing on its own terms. Our guides to the signs of misaligned teeth and the different types of malocclusion explain what to look for.
Where it becomes relevant is the order of treatment. If you grind and you're also considering straightening, that needs planning together — a night guard to protect the teeth, the grinding managed, and any orthodontic work assessed by a dentist rather than started blind. That's exactly the kind of thing a dentist-led assessment is for.
Grinding and thinking about straightening your teeth?
If you clench or grind and your teeth are crowded or misaligned, it's worth having your bite reviewed before you start anything. A free e-consultation gives a GDC-registered dental team a first look from a few photos.
Book Your Free E-Consultation →When to see a dentist about grinding
Occasional, symptom-free grinding may need nothing more than an eye kept on it. But it's worth booking in if you notice any of the following.
- Teeth that are visibly worn, flattened, chipped or increasingly sensitive.
- Regular morning headaches, jaw ache or facial muscle fatigue.
- A jaw that clicks, locks or is tender to open and chew.
- A partner reporting grinding sounds most nights.
- Grinding that started after a new medication or a stressful period and hasn't settled.
A dental assessment typically involves checking the teeth for wear and cracks, examining the jaw muscles and joint, discussing your sleep, stress and lifestyle, and — where a guard is appropriate — taking an impression or 3D scan so it fits properly. Keeping up with regular dental check-ups is often how grinding is caught early, before the wear becomes costly to repair. You can also read more about how Smileie's dentist-led pathway works if straightening turns out to be part of the picture.
FAQs
Can you stop grinding your teeth?
Bruxism can usually be reduced and managed, though it's not always possible to stop it completely, particularly the sleep type. The most effective approach combines protecting the teeth with a custom night guard and addressing the triggers behind the grinding, which are most often stress, disrupted sleep and lifestyle factors.
Does a night guard stop teeth grinding?
Not exactly. A night guard doesn't stop the grinding itself, but it absorbs and spreads the force so your enamel and fillings are protected and the jaw muscles are placed under less strain. It's best thought of as protection while you work on the underlying causes, not a cure on its own.
Can bruxism be cured?
There isn't a single cure, but for many people grinding improves significantly once the triggers are addressed, and it often eases with age. The goal of treatment is to control it and prevent damage rather than promise it will disappear entirely.
Is teeth grinding caused by stress?
Stress and anxiety are among the most common drivers, especially for daytime clenching, and grinding often flares during pressured or poorly rested periods. It's rarely the only factor, though — sleep problems, caffeine and alcohol, some medications and dental factors can all contribute.
Can misaligned teeth cause grinding, and do clear aligners help?
The bite plays a smaller role than was once thought, so clear aligners are not a treatment for bruxism and shouldn't be presented as one. Crowding or uneven contacts can affect how grinding forces are distributed, so if you grind and your teeth are misaligned, it's worth having both assessed together by a dentist before starting any orthodontic treatment.
Can I use a retainer as a night guard?
No. Retainers are thin and designed to hold teeth in position, not to withstand heavy grinding forces, and using one as a guard can damage the retainer or your teeth. Night guards are made from tougher materials for exactly this purpose. Ask your dentist which appliance you actually need.
Should I see a GP or a dentist about teeth grinding?
Start with a dentist, who can check for tooth wear and jaw problems and provide a night guard if needed. Involve your GP if you suspect a sleep disorder, if a medication may be responsible, or if stress and anxiety are the main driver and you'd like support with those.
Worried about your teeth or your bite?
If grinding has worn or crowded your teeth and you're considering straightening, a free e-consultation is a simple first step. If clear aligners suit your case, you'll be guided to a local 3D scan and shown your plan before you commit to anything.
Book Your Free E-Consultation →Disclaimer: This article is for informational purposes only and does not constitute medical or dental advice. Bruxism varies widely in cause and severity, and clear aligners are not a treatment for teeth grinding. Any night guard, treatment or medication change should be guided by a qualified dental professional or GP following an appropriate assessment. Treatment details, package inclusions, prices, finance and promotions may change; check the relevant Smileie UK pages for current information.
