The R3, why Cranium won't take it out | Reviv
@cranium117 · her R3 routine

The R3 that Anika won't take out.

¥12,800
One R3, yours to keep. No subscription, no add-ons.
Colour
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So Anika switched to the Reviv R3, worn at night and a few hours a day. Five months in, she won't take it out.

Real results, her words

Watch why she won't stop wearing it

Swipe through Anika's clips. Tap any to turn the sound on.

Real progress

Drag to see the change

Individual customer experiences, not typical results.

After Before
‹›
BeforeAfter
Face · 2023 → 2026
After Before
‹›
BeforeAfter
Palate · 2023 → 2025
After Before
‹›
BeforeAfter
Posture · 2016 → 2026
Face, 3 months apart
Face · 3 months apart
Side profile 2023 vs 2026
Side profile · her notes
Side profile progression 2023 to 2026
Profile · over time
What you're getting

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 to use

Three steps. All of them easy.

Take the R3 out of the box and wash it
1

Take it out of the box and wash it

Wear the R3 to sleep and a few hours a day
2

Wear it to sleep and 2–3 hours during the day

Wash the R3 and let it dry
3

Wash it and let it dry

Find your size

Confused about size? Measure your width.

One measurement decides it: the width across your back molars.

A fresh apple cut in half
1. Cut a fresh apple in half, across the middle.
Upper-teeth imprint pressed into the apple flesh Width · molar to molar
2. Press your upper teeth in firmly, then lift straight out.
3. Measure the width. From the outer edge of one back molar to the outer edge of the other, in millimetres.
4. Match your size. Compare your width to the chart below to pick Medium, Large or XL.
SizeWidth, molar to molar
Medium50 to 62 mm
Large63 to 72.4 mm
XL72.5 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:

What to expect

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 Anika talks about come from wearing it consistently, not from wearing it harder.
Reviews

What people say about the R3

FAQ

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.

¥12,800Reviv R3 · free shipping