The R3 that relaxed Sarah's jaw and ended her tension headaches.
Sarah's old boil-and-mold guard just held her teeth apart, but she still clenched all night, woke up with a sore, clicking jaw and tension headaches, and kept pulling it out in her sleep. She was staring down expensive dental work. Then she found the Reviv R3, soft silicone with holes so you can breathe, that actually aligns her jaw into a relaxed position. Now she sleeps through the night, no clenching, no headaches, and it's the first mouthguard she wears every single night, for a fraction of that dental bill.
Why Sarah finally wears it every night
Swipe through Sarah's clips. Tap any to turn the sound on.
The R3, the flat-plane guard behind her results
Worn while you sleep
Overnight, plus a few daytime hours if you want to move faster. No routine to learn.
Gentle, steady pressure
The flat-plane design supports the jaw without locking your bite, so it can settle where it should.
Ready out of the case
Premium soft silicone, food-grade tested. No boiling, no moulding. Backed by a 1-year warranty.
How did the R3 help Sarah?
The three changes she talks about most. Her experience, not a promise.
Jaw relaxed, not just teeth apart
Her old guard only stopped her teeth from touching, but she kept clenching all night. The R3 aligns her jaw into a relaxed position instead. "This actually properly aligns my jaw and keeps it in a relaxed position."
No more sore jaw or headaches
She used to wake up with a sore, clicking jaw and tension headaches every morning. Not anymore. "I'm sleeping, I'm not clenching, and I'm not waking up with headaches."
Soft silicone she keeps in all night
No boiling, no moulding, and it never gets hard. The holes let her breathe, so she stops pulling it out mid-sleep. "It's finally a mouthguard I'm wearing all night long."
Three steps. All of them easy.
Take it out of the box and wash it
Wear it to sleep and 2–3 hours during the day
Wash it and let it dry
Confused about size? Measure your width.
One measurement decides it: the width across your back molars.
Width · molar to molar
| Size | Width, molar to molar |
|---|---|
| Medium | 50 mm or less |
| Large | 51 to 56 mm |
| XL | 57 mm or more |
Tips: use a crisp, firm apple, make sure your teeth are clean and dry, press down evenly, and measure carefully in millimetres. No apple? Cut a piece of cardboard to the shape of your upper arch, or measure the width of a current retainer.
Need help on how to measure?
Watch how to measure your palate size with the simple bite-and-bread method:
Consistency is the whole game
- Weeks 1-2: the adjustment phase. A little soreness or extra saliva is normal, your soft tissue is adapting, not a sign anything's wrong.
- Build up gradually: shorter daytime sessions first, then overnights. Ease off for a bit if it ever gets sharp.
- Over the months: the changes Sarah talks about, less clenching and better sleep, come from wearing it consistently, not from wearing it harder.
What people say about the R3
Questions, answered
How should I start? ›
Wearing it: the standard pattern is overnight plus 2 to 3 hours during the day. Build up gradually with shorter daytime intervals first. The early phase is the hardest and gets much easier after a few weeks.
Early discomfort: sore teeth, achy gums and extra saliva in the first weeks are the soft tissue adjusting, not a problem. Take breaks if it gets sharp, don't push through pain.
Faster results: consistency first, then simple stretches like Bite and Hold alongside the guard.
How does sizing work? ›
Width matters most. Measure the outer edges of your upper molars at their widest point, shown in this size guide.
Medium (46mm) fits teens and smaller mouths, Large (53.6mm) fits most adults, and XL (59.6mm) is for larger mouths.
Why does it work? ›
Think of the soft tissue over the skull like a balloon. Grinding your teeth down deflates it over time, what we tend to call "aging." Adding height back with gentle, consistent pressure runs the same physics in reverse.
How many people have done this? ›
Over 30,000 people have started using Reviv appliances and this method.
What is it made of, and what's included? ›
Premium soft silicone, food-grade tested. Your order is the R3 in your chosen size and colour, with its storage case and instructions, backed by a 1-year warranty.