You have probably been told to "just get a mouth guard" by someone, and you have probably wondered do snoring mouth guards work or whether it is one more thing to buy and leave in a drawer. Whether you are the one snoring or the one lying awake next to it, you want a straight answer before you put anything in your mouth.
The honest answer is that they work well for some snorers and not at all for others, and the difference comes down to where your snoring starts. Here is how to tell which group you are in, what to expect if you try one, and when it is better to see a professional first.
Do snoring mouth guards work?
The short answer. Do snoring mouth guards work? For many people whose snoring comes from the jaw and tongue, yes, they can. A mouth guard (1) holds your lower jaw slightly forward, (2) which brings the tongue forward and (3) gives air more room, so there is less to vibrate. They are less likely to help if your snoring starts in your nose.
A snoring mouth guard is not the same as the gum shield a rugby player wears. It is a mandibular advancement device (MAD), and the NHS describes this kind of device as one you wear in your mouth to bring your tongue forward. Our full guide to mandibular advancement devices goes deeper on the science. Here we stick to the practical question of whether one is likely to work for you.
Cause 1: Your jaw slides back when you fall asleep
When you drift off, your jaw muscles relax and your lower jaw can slip backwards. That narrows the space at the back of your throat, and the air you breathe starts to flutter the soft tissue there. That flutter is the noise. A mouth guard works against this one directly, because it holds the jaw in a slightly forward position so the space stays a little wider. This is the situation where mouth guards have the best chance of helping.
Cause 2: Your tongue falls back with it
The tongue follows the jaw. When the jaw sits further back, the base of the tongue can drop towards the throat and partly block the airway. NHS information on snoring notes that this tongue position is one cause, and a doctor may suggest a device that brings the tongue forward. Moving the jaw forward moves the tongue with it, which is why a well-fitted guard can quieten this kind of snoring. It does not help if the tongue is not the problem.
Cause 3: The real problem is in your nose
If your nose is blocked, a mouth guard is aimed at the wrong place. Congestion, allergies or a narrow nasal passage push you to breathe through your mouth, and the snoring starts higher up. A guard will not open a blocked nose. If your snoring is worse in hay fever season or when you have a cold, read our guide on why snoring gets worse during allergy season before you spend anything.
Cause 4: Fit and setting decide the result
Even the right type of guard can fail if it is too bulky, too loose or set too far forward. A guard that feels like a lump in your mouth gets spat out at 3am, and a setting that pushes your jaw too far gives you a sore jaw by morning. This is the most common reason people say mouth guards do not work: they gave up before the fit and setting were right. The aim is the smallest forward position that quietens things down, not the biggest your jaw will tolerate.
Is this you?
A mouth guard is more likely to be worth trying if several of these sound familiar:
- The snoring is loudest when you sleep on your back.
- Your partner describes it as a throaty rattle rather than a nasal whistle.
- Your nose feels clear most nights, even when you snore.
- You wake with a dry mouth because your jaw has dropped open.
- You do not wake gasping or choking, and nobody has seen you stop breathing.
- Your teeth and gums are healthy, with no dentures, braces or loose teeth.
If most of these fit, a mouth guard is a reasonable thing to try. If your nose is blocked, or you ever gasp or choke at night, start with your nose or your GP instead.
What to do about it
The fix follows the cause, so work through these in order, free and simple first.
Step 1: Try the free changes first
This answers Cause 1 without buying anything. Sleeping on your side stops the jaw and tongue dropping back as far, and the NHS lists cutting down on alcohol and keeping to a healthy weight among the things that can ease snoring. Our guide to what causes snoring and how to fix it naturally covers the lot, and how to stop snoring gives a full plan.
Step 2: Check your nose
This answers Cause 3. If your nose clogs up at night, a simple nasal strip is a cheaper first experiment than a mouth guard, and our guide to nose breathing versus mouth breathing explains how the two connect.
Step 3: If it sounds like jaw and tongue, try a guard
This answers Causes 1, 2 and 4. A boil-and-bite guard lets you test the idea without the cost of a custom dental device. DreamGuard moulds to your own teeth and adjusts across ten settings, 1mm apart, so you can start at level 1, give it a few nights, and only move up if you need to. It is a non-medical oral accessory for snoring, so it will not suit everyone and it is not a treatment for any medical condition. There is a 30-night refund window, which is a fair time to judge it properly. You can see more options in our anti-snoring collection.
Step 4: Give it a fair trial, then decide
Expect it to feel odd for the first few nights. Ask your partner whether the noise has changed rather than relying on how you feel, and change one thing at a time. If you get lasting jaw ache or your bite feels different, stop and speak to a dentist, who can also make a custom-fitted device if you want something long term.
"It's just a gum shield, it can't stop snoring" - is that true?
Up to a point. A gum shield made to protect teeth in sport does nothing for snoring, so the scepticism is fair. A snoring mouth guard is a different thing: it is designed to hold the lower jaw forward, which is the whole mechanism. Where the objection has teeth is that a mouth guard only addresses jaw and tongue position. If your snoring starts in a blocked nose, or comes with breathing pauses, a guard is the wrong tool. So the useful question is not whether mouth guards work in general, but whether yours is the kind of snoring they are built for.
When it's different for you
- If you have dentures, braces, crowns, bridges or loose teeth, a boil-and-bite guard is not appropriate. Ask your dentist what would suit you.
- If you have gum disease or jaw joint problems, check with your dentist before using any device that moves the jaw.
- If you are under 18, our mouthpiece is not for you. Speak to your GP or dentist about snoring in young people.
When to see your GP
Seeing your GP about snoring is a sensible step rather than a last resort, and it is the right first move if you notice any of these:
- Daytime sleepiness that does not match how long you sleep.
- Breathing that stops and starts while you sleep, or gasping and choking.
- Snoring that is not improving with lifestyle changes.
- Snoring that is badly affecting you or your partner.
These can be signs of sleep apnoea, which needs a proper assessment. Read the NHS advice on snoring for more.
Frequently asked questions
Do snoring mouth guards really work?
They can, mainly when snoring comes from the jaw and tongue dropping back. They are less likely to help when the nose is the problem. Results vary from person to person, so treat a guard as something to test sensibly. Our guide to mandibular advancement devices explains the types.
How long does it take for a snoring mouth guard to work?
You may notice a difference on the first night, but give yourself at least a few nights to get used to the feel and find a comfortable setting. Most of the early trouble is comfort and fit rather than the idea itself, so be patient before you judge it.
Do snoring mouth guards have side effects?
Some people get jaw ache, sore teeth or extra saliva, especially in the first week or two. These often ease as you adjust. If aching lingers, or your bite feels different, stop using it and speak to a dentist.
Do I need a dentist-made mouth guard?
Not to try one. A boil-and-bite guard is a low-cost way to see whether the idea suits you. If it helps and you want something more comfortable for the long term, a dentist can make a custom-fitted device. See also our tips for sleeping with a snoring partner while you test things.
Is snoring the same as sleep apnoea?
No. Snoring is a noise, while sleep apnoea involves breathing repeatedly stopping and starting during sleep. A consumer mouth guard is not a test or a treatment for it. If you have gasping, choking or heavy daytime sleepiness, see your GP.
The bottom line
Start with the free changes, check that your nose is clear, and only then try a guard if your snoring sounds like it comes from the jaw and tongue. Give it a few nights at a gentle setting, change one thing at a time, and see a dentist or GP if anything hurts or the snoring comes with breathing pauses.
Snoring mouth guards are not magic, and they are not for everyone. But for the right kind of snoring, they are a simple and affordable thing to test, and a quieter bedroom is worth a fair try.
Try DreamGuard - an adjustable boil-and-bite mouthpiece for snoring, with a 30-night window to decide.
Try DreamFlow Nasal Strips - a gentle first step if your nose is part of the problem.
This article is general information, not medical advice. If your symptoms are persistent or severe, or you are unsure what is causing them, please speak to your GP. SleepyDeepy products are designed to support your sleep and are not a treatment for any medical condition.
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