"I got quoted $500. No way I'm paying for that." Jaden ranked the ¥12,900 R3 S tier.
The jaw. A tight jaw every morning, and clenching at night. "My fiance noticed me doing this every single night."
The quote. "I went to my doctor, I got quoted $500 for it. I thought there's no way I'm paying for that."
The ranking. Hot shower, B tier. Jaw stretches, he could not stay consistent. A bulky store-bought guard, C tier. The R3: "S tier. I forgot it was in by night three."
His routine. "Now it's just a part of my nightly routine, like I'm brushing my teeth." His experience, not a promise.
Jaden on the R3
Eight clips. Tap any one to open it full screen with sound.
Don't buy it unless you're ready to forget you're wearing it
How his first nights went, in his words. His experience, not a promise.
- 1
Night one
"It felt weird and I noticed the entire time."
- 2
Night two
"Less of a problem."
- 3
Night three
"I forgot it was in." Now it is part of his routine, like brushing his teeth.
The R3, the guard Jaden wears every night
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 flat silicone, food-grade tested. Ready out of the box, nothing to prepare. Backed by a 1-year warranty.
How did the R3 help Jaden?
What he comes back to in his clips. His experience, not a promise.
No more morning jaw pain
"It's protecting my teeth. I don't have any more jaw pain that's giving me headaches."
Less tense
"When I wake up, my face is actually way less tense."
Not $500
"Less than a third of a dentist quote." Backed by a 1-year warranty.
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 to 62 mm |
| Large | 63 to 72.4 mm |
| XL | 72.5 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 weeks: Jaden talks about night one feeling weird, forgetting it was in by night three, and waking up less tense since. What he describes is his own experience, not a promise.
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 fits a width of 50 to 62 mm, Large fits 63 to 72.4 mm, and XL is for 72.5 mm or more.
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.
Other people who switched to the R3
Real customers, in their own words. Tap anyone to see their story.