Which Reviv? Harland picks the R3.
Harland tried the jaw gadgets and the daily gum, and none of it stuck. Wearing a Reviv guard at night did. Harland started on the R2, switched to the R3, and breaks down which one to get and why.
Harland breaks down R2 vs R3
Swipe through Harland's clips. Tap any to turn the sound on.
Which one should you get?
The two guards Harland talks about, and who each is for.
For mouth breathing
- Thicker, with fewer holes
- Built mainly to curb nighttime mouth breathing
- A little bigger in the mouth
The newer all-rounder
- Slimmer, sleeker and more comfortable
- More holes, designed to support the jaw
- Easier to keep wearing every night
Both hold your jaw in position while you sleep and help stop the grinding. This page is for the R3.
The R3, the flat-plane guard Harland picked
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.
What Harland likes about the R3
Why Harland landed on the R3 over the others. Personal experience, not a promise.
Holds your jaw while you sleep
Worn overnight, it keeps the jaw in position so the grinding settles. "It aligned my jaw exactly where it needed to be while I was sleeping."
Slimmer and more comfortable
The R3 is thinner than the R2, which makes it easier to actually keep wearing. "It's slicker and slimmer, so much more comfortable, easier to get into the habit."
The newest in the lineup
The R3 is the latest model, built on everything they learned from the earlier ones. "They took all the notes and all the complaints and put it into this design."
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 Harland talks about came from wearing it consistently at night over the better part of a year, 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.