The R3 that ended Katie's nightly grind and morning headaches.
Katie clenched and ground her jaw hard every night, waking up with tension headaches and severe neck pain, barely sleeping. She was about to drop $500 on another dentist mouthguard, then found the Reviv R3, the next-gen guard with holes that help you breathe at night. It gives her jaw that little bit of space, and now she gets the best sleep of her life.
Why Katie won't sleep without it
Swipe through Katie'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 Katie?
The three changes she talks about most. Her experience, not a promise.
Less grinding & clenching
She used to grind fiercely and clench all night. The R3 gives her teeth that little bit of space, because they aren't meant to be touching. "My jaw actually feels like it got some rest."
Fewer headaches & neck pain
The tension headaches from clenching, and the severe neck pain she'd wake up with, have eased right off. "I don't get those morning headaches and I don't feel tense."
Better sleep & easier breathing
The holes in the R3 let her breathe through the night instead of mouth-breathing, so she finally rests. "I just get the best sleep ever."
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.
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 Katie talks about, less grinding 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 video.
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.