Night Guards in Las Vegas & Henderson
If you grind or clench in your sleep, a custom night guard protects your enamel from wear you cannot undo. Here is what one does, what it does not, and how it fits alongside a retainer.
A night guard protects teeth. It does not stop grinding.
This distinction matters and is often blurred. Bruxism — grinding and clenching during sleep — originates in the nervous system, not in your teeth. A guard does not switch it off.
What it does is put a sacrificial layer of hard plastic between your upper and lower teeth, so the wear happens to the appliance instead of to your enamel. Enamel does not grow back. Once it is ground away, the only remedies are crowns, veneers or bonding, repeated over a lifetime.
So a night guard is damage control, and very effective damage control. Managing the grinding itself is a separate matter — stress, sleep quality, caffeine, alcohol and certain medications all contribute, and those are worth addressing alongside rather than instead.
Signs you are grinding in your sleep
Most people who grind have no idea they do. You are asleep, and it is usually a partner or a dentist who notices first.
Waking with a sore jaw
Tightness or aching in the jaw muscles first thing, easing through the morning. Often mistaken for sleeping awkwardly.
Morning headaches
Dull headaches around the temples on waking. The temporalis is a jaw muscle, and hours of clenching leaves it fatigued.
Flattened or chipped teeth
Edges of the front teeth looking worn level, or small chips appearing. Your dentist usually spots this before you do.
Increased sensitivity
Enamel thinned by grinding exposes dentine underneath, producing sensitivity to cold and sweet things.
Someone hears it
Audible grinding at night is the most direct evidence there is. If a partner mentions it, believe them.
Teeth shifting after treatment
Clenching applies real force. In patients who finished orthodontic treatment, it can contribute to relapse even with retainer wear.
If several of these apply, get it looked at. Bruxism is progressive — the wear accumulates quietly over years and is only obvious once it is substantial. Catching it early is the difference between a guard and a mouthful of crowns.
A night guard is not a sleep apnea appliance
These get confused constantly, and the difference is not cosmetic.
A night guard is a protective splint. It separates the teeth and absorbs grinding force. It does nothing to your airway.
A mandibular advancement device for obstructive sleep apnea is a different appliance with a different job — it holds the lower jaw forward to keep the airway open. It requires a diagnosis from a physician, usually following a sleep study, and it is fitted and monitored as part of medical treatment.
If you snore heavily, stop breathing during sleep, wake unrefreshed after a full night, or fall asleep during the day, please speak to your physician rather than buying a guard. Untreated sleep apnea carries cardiovascular risk that a night guard does absolutely nothing about — and the two conditions frequently occur together, which is exactly why the confusion is dangerous.
Types of night guard, and why custom matters
| Drugstore boil-and-bite | Custom soft | Custom hard acrylic | |
|---|---|---|---|
| Fit | Approximate | Exact | Exact |
| Best for | Short-term only | Light grinding, clenching | Moderate to heavy grinding |
| Durability | Months | 1–3 years | Several years |
| Bulk in the mouth | High | Moderate | Low — thinner material |
| Risk of chewing through it | High | Moderate — soft invites clenching | Low |
| Can shift teeth if ill-fitting | Yes — real risk | No | No |
The risk nobody mentions about drugstore guards. An appliance that covers only some teeth, or fits loosely, applies uneven pressure night after night — and that is precisely how teeth move. We have seen bites altered by a guard bought to protect them. If you have had orthodontic treatment, this is a genuine way to undo it.
Night guards and retainers have to work together
If you have finished orthodontic treatment and you grind, you have two jobs to do overnight: hold the teeth where they were put, and protect them from being worn down. Handled separately, those two appliances compete for the same hours.
This is where an orthodontist’s involvement genuinely changes the answer. Depending on your case, we may recommend a retainer built with enough thickness to absorb grinding, a hard guard designed to maintain your finished tooth positions as well as protect them, or a bonded retainer on the lower teeth with a guard worn over the top.
What we would not recommend is alternating — guard some nights, retainer others. That is how teeth drift.
Dr. Beth has your treatment records and knows exactly where each tooth was placed, which is the information any appliance worn nightly needs to be built around.
Cleaning and replacing your night guard
Rinse and brush every morning
Rinse under cool water as soon as you take it out, then brush gently with a soft toothbrush. Toothpaste is mildly abrasive and clouds the material over time, so mild soap or a dedicated cleaner is better.
Let it dry fully before the case
A damp guard sealed in a case grows bacteria fast, which is where the smell comes from. Air-dry it completely, and use a vented case rather than an airtight one.
Never hot water
No dishwasher, no boiling to sterilise, and never left in a car in a Las Vegas summer. Heat warps the material permanently, and a warped guard does not fit — which means it is no longer protecting anything.
Soak weekly
A retainer or denture cleaning tablet once a week handles the film that builds up. If it smells, clean it more often rather than less.
Bring it to appointments
We check fit and wear when you come in. Watching how a guard wears also tells us how heavily you are grinding, which is useful information in its own right.
Replace when it has done its job
A guard that is thinned through, cracked or perforated has absorbed what it was meant to absorb. Custom hard guards commonly last several years; soft ones one to three, and less for heavy grinders.
Night guard FAQ
Will a night guard stop me grinding my teeth?
No, and anyone promising that is overselling. Bruxism originates in the nervous system, not the teeth. A night guard puts a sacrificial layer between your upper and lower teeth so the wear happens to the appliance rather than to enamel, which does not grow back. Managing the grinding itself involves stress, sleep quality, caffeine, alcohol and sometimes medication, and is worth addressing alongside.
Is a night guard the same as a sleep apnea device?
No. A night guard is a protective splint with no effect on your airway. A mandibular advancement device for obstructive sleep apnea holds the lower jaw forward to keep the airway open and requires a physician’s diagnosis, usually after a sleep study. If you snore heavily, gasp during sleep or wake unrefreshed, speak to your doctor rather than buying a guard.
Can I just buy a night guard from the drugstore?
You can, though there is a real risk worth knowing about. A guard that fits loosely or covers only some teeth applies uneven pressure night after night, and that is exactly how teeth move. We have seen bites altered by guards bought to protect them. If you have had orthodontic treatment, a drugstore guard is a genuine way to undo it.
Will a night guard fix my jaw pain or TMJ?
Sometimes it helps, and we would rather not overpromise. Where jaw muscle pain is driven by nighttime clenching, reducing that load often eases symptoms. But jaw pain has several possible causes and the evidence that splints reliably resolve TMJ disorders is mixed. Dr. Beth will tell you honestly whether your presentation is one a guard is likely to help.
Do I wear a night guard instead of my retainer?
Not by alternating them — that is how teeth drift. Depending on your case we can often build a single appliance that both retains your finished tooth positions and absorbs grinding, or pair a bonded lower retainer with a guard worn over it. Ask before you start wearing anything nightly.
Soft or hard night guard?
Soft guards suit light grinding and clenching and are more comfortable initially, but some patients chew through them and the softness can actually encourage clenching. Hard acrylic guards are thinner, considerably more durable and generally preferred for moderate to heavy grinding. Dr. Beth recommends based on how your teeth are wearing.
How long does a custom night guard last?
A hard acrylic guard commonly lasts several years. Soft guards typically one to three, and less for heavy grinders. Replace it once it is thinned through, cracked or perforated — at that point it has absorbed what it was built to absorb.
Does insurance cover a night guard?
Many dental plans include a benefit for occlusal guards, often once every few years, though coverage varies considerably. We can check your plan when you call. Night guards are also generally an eligible FSA and HSA expense.
Can children have night guards?
Grinding is common in children and most grow out of it without treatment, so a guard is not usually the first answer. It also has to be remade frequently as they grow and lose teeth. If your child grinds audibly and is showing wear, bring them in and we will assess whether anything is warranted yet.
Enamel does not grow back.
If you are waking with a sore jaw or your dentist has mentioned wear, come in. A scan takes minutes, and a guard costs a fraction of what restoring worn teeth does.