The R3 behind Santiago's structure work and 378 days of real sleep.
For years Santiago dealt with a recessed, collapsed maxillofacial structure, chronic fatigue and sleep apnea, reliant on a CPAP just to function. Through his own biomechanics method, with the Reviv R3 as a top-down bite stabilizer, he has documented better breathing, forward growth, symmetry and posture, and 378 days CPAP-free. His own experience, not medical advice.
Santiago's structure journey
Swipe through Santiago'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 does the R3 fit Santiago's method?
The three things he talks about most. His personal experience, not a promise, and not medical advice.
Breathing & sleep
He uses the R3 as a top-down bite stabilizer in his own biomechanics routine. "My breathing opened up, and I've been CPAP-free for 378 days."
Structure & symmetry
Part of the work he documents: forward and upward growth, better symmetry and posture over time. "I've documented improvements to my whole structure."
Energy & rest
Where chronic fatigue used to run his days, he now wakes up with more in the tank. "More energy and more rest from sleep every day that passes."
Santiago's personal experience only, not medical advice, and results vary. Reviv is not a medical device and is not intended to diagnose, treat, cure or prevent any disease, including sleep apnea. It has not been evaluated by the FDA.
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 Santiago documents, better breathing and sleep, come from wearing it consistently as part of his routine, 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.