The R3 that gave Jessica the best sleep of her life.
Jessica woke up every morning with jaw pain, tooth pain and migraines from grinding her teeth at night. She tried every bulky mouthguard the dentist gave her. Then she found the Reviv R3, worn at night, comfortable, and a fraction of the dentist price. Now she sleeps like a rock.
Jessica on the best sleep of her life
Swipe through Jessica's clips. Tap any to turn the sound on.
The R3, the flat-plane guard behind her best sleep
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 Jessica?
The three things she talks about most. Her experience, not a promise.
The best sleep, no more grinding pain
She used to wake up with jaw pain, tooth pain and migraines from grinding all night. Not anymore. "I sleep like a rock. This has helped my jaw pain from the teeth grinding."
A fraction of the dentist price
No 600 to 800 dollar dentist guard, no repeat visits to get it refitted. One price, ships to you. "I could buy 20 of these for what my dentist charges for one."
Comfortable, not bulky
Not the thick guards that snap on, or the thin ones you grind straight through. It has breathing holes and actually fits. "It fits great and it's comfortable."
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 weeks: the change Jessica talks about, sleeping through without the grinding pain, came from wearing it consistently. As she says, it is a little uncomfortable at first and then your mouth gets used to it.
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.