The GUARD uses premium thermoplastic to absorb grinding force and protect enamel — while the slim 5.8 × 4.5 × 2.6 cm profile doesn't crowd the mouth or trigger a gag reflex. Subtle forward-jaw alignment opens the airway slightly, addressing the soft-tissue vibration that causes most non-apnea snoring. 4–20 cmH₂O pressure range means it's light enough to sleep through. Three colors for whoever prefers not to think of their mouthguard as medical equipment.
Thermoplastic protection. Slim profile. Anti-bruxism and anti-snore in one piece.
- BRUXISM TOOTH PROTECTION — ENAMEL DEFENSE: premium thermoplastic material absorbs the force of grinding — protecting enamel, preventing cracked teeth, and reducing the jaw tension that causes morning soreness and TMJ pain. Bruxism causes more dental damage than cavities for many adults who grind under stress. The GUARD is the standard non-prescription defense.
- ANTI-SNORE JAW POSITIONING: subtle forward-jaw alignment opens the airway slightly, reducing the soft-tissue vibration that causes most snoring. Not a mandibular advancement device — the positioning is subtle enough to be comfortable but meaningful enough to reduce snoring vibration for most users.
- LOW-PRESSURE COMFORT — 4–20 cmH₂O: engineered pressure range is light enough to sleep through without jaw fatigue. Thick pharmacy mouthguards force your jaw into an uncomfortable bite position that produces its own morning soreness. The GUARD's 4–20 cmH₂O range is designed to feel barely there.
- SLIM COMPACT DESIGN — 5.8 × 4.5 × 2.6 CM: low-profile fit doesn't crowd the mouth or trigger a gag reflex. Comfortable for side, back, and stomach sleepers. The compact size makes it far more tolerable for first-time mouthguard users who've tried and abandoned bulky alternatives.
Bruxism produces grinding forces that can exceed 250 pounds — significantly more than normal chewing. Over time, this damages enamel, cracks cusps, and produces TMJ symptoms. A mouthguard distributes these forces across the guard material rather than concentrating them on tooth contact points.
low-pressure comfort range — designed to feel barely there while still protecting enamel from grinding force
slim compact dimensions — no gag reflex, no crowding, suitable for side back and stomach sleepers
thermoplastic material — no harmful plasticizers against your gums and teeth overnight
Bruxism and enamel damage: Journal of Oral Rehabilitation. Anti-snore jaw positioning: Journal of Clinical Sleep Medicine. Customer survey: Calena GUARD users, 60-day trial.
How bruxism and snoring connect to jaw position
Bruxism during sleep produces grinding and clenching forces far exceeding normal chewing load — often unconsciously and often during high-stress periods. The GUARD's thermoplastic layer absorbs this force and sacrifices its own surface rather than tooth enamel. Replace when the guard shows significant wear rather than when your teeth do.
The temporomandibular joint absorbs the overload from bruxism — producing morning jaw soreness, headaches, and ear pain in chronic grinders. A mouthguard's cushioning effect reduces the force transferred to the TMJ overnight, allowing the joint to recover during sleep rather than being loaded throughout.
Forward jaw positioning slightly opens the oropharyngeal space — the area where soft palate vibration generates audible snoring. This is the same mechanism as mandibular advancement devices, at a subtler level appropriate for mild snorers who don't need clinical MAD intervention.
For teeth grinders, TMJ sufferers, mild snorers, and anyone whose dentist has mentioned enamel wear.
The teeth grinder
Your dentist has mentioned enamel wear. You wake with a sore jaw, sometimes a headache. You've known you need a mouthguard but haven't found one you can tolerate.
The GUARD's slim 5.8 × 4.5 × 2.6 cm profile is the reason people actually use it. Light enough to forget, effective enough to protect.
The TMJ sufferer
Morning jaw pain, ear aches, headaches that start at the jaw. The cycle of bruxism-driven TMJ inflammation that you can't seem to stop.
The GUARD intercepts the grinding force before it reaches the TMJ. Consistent use reduces overnight joint loading — most users notice reduced morning jaw soreness within 1–2 weeks.
The mild snorer
You snore — not apnea-level, but enough to be told about it. Nasal strips help with the nose side; the GUARD helps with the jaw position side.
The subtle forward-jaw alignment of the GUARD reduces soft-palate vibration for most mild snorers. Use alongside the BREATHE nasal strip or the SEAL mouth tape for combined airway support.
The stress-period grinder
You don't grind normally, but during high-stress periods your jaw is sore by morning. Bruxism tracks stress levels — the GUARD during stressful periods prevents the enamel damage that accumulates without protection.
Keep the GUARD on the nightstand during busy periods. The cost of enamel repair significantly exceeds the cost of prevention.
The gift-giver for a grinder
You know someone who grinds their teeth and has been told by their dentist to get a guard. They haven't.
Three colors, compact case included, 30-day refund. The GUARD is the nudge they haven't gotten themselves.
Rinse. Insert. Sleep. Rinse again in the morning.
Rinse Before Insertion
Rinse the GUARD with cold water before inserting at bedtime. Position over your upper teeth — the guard sits between your upper and lower teeth, cushioning the contact.
BPA-Free ThermoplasticSleep With It
The slim 5.8 × 4.5 × 2.6 cm profile is designed to become unnoticeable within a few minutes. Most users stop noticing it within the first week of use.
4–20 cmH₂O Comfort RangeClean and Store
Rinse with cold water in the morning and store in the included case. Clean weekly with a soft toothbrush and non-abrasive cleaner. Replace every 6–12 months when wear is visible.
Slim Compact DesignPharmacy mouthguards are thick and uncomfortable. The GUARD is slim enough to actually wear.
| Standard pharmacy mouthguard | Calena GUARD | |
|---|---|---|
| Slim 5.8×4.5×2.6 cm — no gag reflex | ✕ | ✓ |
| BPA-free thermoplastic — no plasticizers | ✕ | ✓ |
| 4–20 cmH₂O low-pressure fit | ✕ | ✓ |
| Subtle anti-snore jaw positioning | ✕ | ✓ |
| Three colors: Clear, Blush, Sky | ✕ | ✓ |
| 30-day money-back refund | ✕ | ✓ |
Try it risk-free.
30-Day Money-Back Guarantee
Not satisfied within 30 days? Return it for a full refund — no questions asked. No hoops, no hassle.
1-Year Warranty
Every Calena product is backed by a full 12-month warranty against defects.
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We're so confident you'll love this product, we're giving you 30 days to test it. If it doesn't work for you, send it back for a full refund.
Everything you need to know about GUARD.
How long does shipping take? +
Orders ship within 1–2 business days and typically arrive within 5–7 business days in the US. You'll receive a tracking link as soon as your order ships.
What's your return policy? +
We offer 30-day returns on all products. If you're not satisfied for any reason, contact us and we'll arrange a full refund — no questions asked.
Is the product safe and non-toxic? +
Yes. All Calena products are tested for safety and free from harmful chemicals. We only use materials we'd use in our own homes.
How is this different from a cheaper version on Amazon? +
Most cheap alternatives use low-grade materials that degrade quickly and have no scientific basis for their claims. Calena products are anchored in studied mechanisms, built from premium materials, and backed by real guarantees.
Where do you ship from? +
All orders are fulfilled from within the USA for fast, tracked delivery.
What's covered under the warranty? +
Every Calena product is covered by a 1-year warranty against manufacturing defects. If something is wrong, contact us and we'll make it right.