R2 (RevivTwo) without Support
R2 (RevivTwo) without Support
| Size | Length | Width | Height | Best for |
|---|---|---|---|---|
| Large | 54 mm | 74 mm | 30 mm | Most adults |
| Medium | 46 mm | 63 mm | 25 mm | Teens & small adult mouths |
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Andrew
"Structurally and neurologically I feel so much better after I started the Reviv."
- Trusted by 30k+ Customers
- Secure Checkout
- 90-Day Guarantee
How it works?
How it works?
- Wear the mouthguard every night and as much as you can during the day (eg. 1-2 hours)
- The soft tissue of the jaw and skull begin to unwind and many health issues begin to improve.
Warranty & Replacement Guarantee
Warranty & Replacement Guarantee
Every R2 & R3 Reviv appliance includes a 1-year replacement guarantee. If it breaks under normal use within 12 months of purchase, we'll replace it free — one free replacement (of either R2 or R3) per customer account. Email cs@getreviv.com with your order number and a picture of the damaged mouthguard to claim.
Shipping Information
Shipping Information
- Shipping typically takes 7-10 days to most destinations including the US. More remote countries can take longer.
- Orders typically ship within 24 hours and you will receive a tracking number by email as soon as it ships.

Ken Leaver
Reviv Founder
"In 2020 I was exhausted by 6pm and got sick a couple times a year. For the last two years at the age of 47 I work from 8am till past 10pm everyday without burning out. I haven't been sick in over four years and I feel like a beast everyday."
- 5 stars: 369 (80%)
- 4 stars: 45 (10%)
- 3 stars: 20 (4%)
- 2 stars: 14 (3%)
- 1 star: 13 (3%)
I'm only 2 months in, but so far so good. The first few nights it was really awkward because my mouth kept filling with saliva thinking I had food in my mouth 😅 but then over time that has settled and I'm beginning to be able to wear it most of the way through the night. Way less jaw tension (i grind my teeth in my sleep and jaw clench) which I think is getting less and less as I begin to wear the mouthguard for longer. I've since ordered my husband a mouthguard to try as he's a mouth breather. Keen to see our results over the next 12 months!
I got this to help relax my jaw because of trigeminal nerve issues. My Dr and physio had recommended a mouth guard. It had definitely had a positive impact on muscle tension in my neck and jaws and I’m noticing more symmetrical facial as l features and improvement in lower jaw tooth crowding. I can feel that my palate is now wider and flatter too. It took a few weeks before it stayed in all night, but now I’m more comfortable wearing it at night than going without.
My teeth are straightening out and separating. I've got more energy too
Really felt the difference over the past months, I sleep better and my facial structure started to align pretty quickly. Some funny effects as well is that I'm not anxious anymore, more social and not a people pleaser anymore! I switch between the R1 and R1.. the R1 is more comfortable to wear in the daytime, for sleep I prefer the R2
Really felt the difference over the past months, I sleep better and my facial structure started to align pretty quickly. Some funny effects as well is that I'm not anxious anymore, more social and not a people pleaser anymore! I switch between the R1 and R1.. the R1 is more comfortable to wear in the daytime, for sleep I prefer the R2
Thank you Gijs! And great work!
Been difficult to wear. I had to cut off the tongue guide because I got an ulcer so bad it took 2.5 weeks to go away. I also cut 2 horizontal holes in the sides for saliva to move through more. I still get tissue soreness so I have to go start again very slowly.
I'm quite familiar with meme appliances like Starecta and conduct a bit of biomechanical study (mostly PRI) to address my asymmetries. RevivTwo is a great little appliance that has been giving me very steady gains.
It's not going to change you if you don't know what your goals should be, that is a more symmetrical, healthier, biomechanically sturdier body. You can for sure use this device wrong by locking into a bite that's comfortable yet chronically damaging to you -- your old bite essentially.
So it has already begun straightening my front 2 teeth. It has also shifted my lower jaw more to the right, although I'm less symmetrical when aligning teeth, overall I'm more symmetrical everywhere else. Have been wearing it anywhere between 4 to 12 hours a day, every day.
Doesn't smell as bad as the Starecta with regular use. Well constructed. Pretty comfortable when you get used to it. It doesn't have weird manufacturing edges and defects that irritate the mouth.
I’ve been struggling with severe bruxism and TMJ pain for around five years, and I genuinely feel like I’ve tried everything. Physiotherapy, chiropractic treatment, custom dentist-made mouthguards, acupuncture, Botox — you name it. I’ve spent well over $10,000 trying to find something that would give me relief, and I honestly cannot believe that after all of that, the thing that has helped me the most has been a Reviv mouthguard.
I initially purchased the R3 in a Large. Unfortunately, it felt too big for my mouth and would sometimes fall out while I was sleeping. I also noticed that because it encouraged my mouth to stay open and has larger built-in breathing holes, I was waking up with little white dehydrated spots on my teeth that lined up with the holes.
I decided to switch to the R2 in Medium, as it was smaller and didn’t have the same large holes, and the difference has honestly been incredible.
It’s only been about a week, but I feel like I have my personality back. Before this, I was miserable from being in constant pain. I was dealing with daily headaches, jaw pain and clicking, and it was really affecting my quality of life.
Since using the R2, my jaw has stopped clicking. I can tell that I’m still clenching during the night because I can feel the tension when I wake up, but the mouthguard seems to hold my jaw in a comfortable position so that the clenching doesn’t turn into the horrible jaw aches and headaches I used to experience throughout the day.
I’ve also noticed that my nasal breathing seems to be improving, my ears feel less blocked, and my teeth even appear to be slightly straightening already.
Obviously everyone’s experience with TMJ and bruxism is different, and this is only my personal experience, but I genuinely cannot believe the difference this has made for me in such a short amount of time.
After five years of pain, countless treatments and more than $10,000 spent trying to fix this, I finally feel like I’ve found something that actually helps. I’m so grateful I found the Reviv R2.
Its great best mouthguard i have ever had
So much less tension in my jaw. My bite is also aligning well. Can’t wait to see my progress a few months from now. Very happy with my purchase.
Helped relieve chronic headaches, well worth the money!
My teeth seem to change every day. Previously, they seemed to all lean towards one side of my mouth. They feel like they are shifting back where they belong. My sleep has improved. And best of all my neck and back pain is hardly noticeable. I feel straightened out all over. The mouthguard has gotten more comfortable and it feels quite natural. I do not grind or snore.
Having no idea which Reviv would work best for me, I started with R1 and then ordered R2 and R3 a few months later. Because they are so different, I had no idea which one would be more comfortable for me, but ultimately R3 works best for me. I still sleep using R1 for now because of its flexibility and am trying to wear R3 during the day whenever possible.
Love the design, just not very durable, found widen teeth gap during wear.
The plastic is way too hard! My son has a myo brace i thought it would be a similar product but its just too ridged.
Don't no which results will come but the mouthgard is very comfortable, even when sleeping. Support from Revive is great. So far so very good!
This night guard is life changing! Prefer the R2 to the R3 and I am a big grinder. Also paired the guard with toe spacer socks to sleep which has helped relax my jaw and reducing the night time clenching/grinding.
Also has straighten my bottom teeth in about 2 months! Cannot recommend enough!
I’m surprised how it fit perfectly and the material was great unfortunately I haven’t tried it tonight but it felt so comfortable and relaxing. I hope it gives me a good sleep. I wish I wouldn’t have pushed the stars already so I could’ve put a review on what it was like waking up tomorrow, but I was very satisfied in the material and how it fit. But I have a small mouth medium is very small for my very small mouth!! I measured only half of what the guy did in the video and I was surprised how small this was. I was just happy. It was perfect for me. I would like to write another review to see how it goes on how it stays, but I can’t do that. It’s too late now, but you must go up larger that I will tell you.!!!!!!!*****
I've lost 3 teeth to bruxism, grinding and stress in the last 9 years mostly molars despite using tailor made guards. I was on the way to lose more until this. I feel it has realigned things and repositioned my bite to slow the self attacks. I wish it was a bit thinner and easier to wear however as it feels large and clumpy in the mouth and sometimes pops out but otherwise great. Thank you!
Neck, jaw, and shoulder popping—silenced!
I'm amazed at how well this works. I wasn't expecting much except to not grind at night. I've always had straight top teeth, but have dealt with crooked lower teeth my entire life. I didn't expect to see any straightening for months, but in less than 60 days I feel there is definitely a difference in my bite. I definitely recommend it!
Really hard to wear because it’s so big that I cannot close my mouth at night. Gives me a dry mouth. Nikki the silicone material and breathing holes though. Also too much saliva builds up in my mouth.
The 'so big I can't close my mouth' feeling is often the vertical height the guard adds before your soft tissue has stretched to accommodate it — it eases as you adjust.
The key is to ease in rather than go straight to full nights: start with short intervals during the day and build up gradually. Closing around it gets easier as the tissue stretches.
Mouth taping at night is the most useful lever here — it keeps your lips sealed, which tackles both the dry mouth (from your mouth staying open) and the saliva pooling, and it helps hold the guard in place too. The extra saliva is also common early on and settles as your mouth adjusts.
Try to check out our community if you can as these things are discussed a lot there and most folks do get through it. To request a 1 month free trial: https://www.skool.com/reviv-2885/about
Terrible for grinding, uncomfortable to sleep with in, mine fell apart not long after purchase
Hi,
Sorry to hear it — that's a frustrating experience
Note that the R2 comes with a 1-year replacement so you can write to support if you want to take advantage of that.
On the comfort side, easing in gradually — shorter intervals during the day before building up to nights — usually makes a big difference there too.
HOW REVIV WORKS
We believe there are some biomechanics to how the skeleton and skull work, which result in it collapsing over time.
Particularly if you did orthodontics, extractions, or grind your teeth our experience is that this could result in the skull sort of 'deflating'.
And a simple mouthguard like Reviv can 'reinflate' it by stretching the soft tissue that covers the skull.
Jaw issues
"I've been wearing my appliance for 3 weeks now. No more TMJ pain at all! I can do chin tuck exercises without my neck muscles spasming and cramping." - Jay
Energy
"I wear it when driving the bus. A day of work that normally knocks me out the next day had me full of energy. Even when i got home after a very long day. I love this thing!" - George
Mental Clarity
"Although i'm a software developer I spent about a year carrying boxes in a warehouse because of the thick brain fog i had. I've been wearing Reviv since early November and brain fog is gone. I just recently started a job working as a developer again!" - Ivan
Posture
"I noticed the other day the area where my neck meets my upper back is more flat . I always had a bit of kyphosis and rounded soldiers and it seems to be correcting." - Harvwin
WHY PEOPLE LOVE REVIV
Fast results
95%+ of folks that start Reviv feel something improving in the first week.
Personalized support
Ken reviews everyone's journals each week to stay up on their progress and give them personalized advice.
You can also ask Ken a question as a message anytime.
Affordability
We view that we are democratizing health to the masses. While TMJ dentists charge thousands of dollars we're delivering far better results at something like 1-2% of what they cost.
Learn More About How This Method Works
I Am Going to Challenge What You Believe About Health
Read postChallenges traditional health views, introduces the balloon theory, and explores how dental health affects overall well-being.
The Balloon Theory
Read postExplains how dental health impacts overall well-being by linking teeth to various health issues and introduces methods for addressing these connections.
How to Correct the Problem
Read postProvides strategies for addressing dental health issues and correcting related problems for improved overall well-being.
What Is Impacted by These Biomechanics?
Read postExplores how dental biomechanics affect various aspects of health and well-being.
How should I start Reviv? Is there anything to be aware of?
Yes there are a few things to know going in.
On wearing it: The standard pattern is overnight + 2-3 hours during the day. Build up gradually with shorter intervals during the day first rather than going straight to overnights — that helps the soft tissue adjust. Most folks find the early phase is the hardest part and it gets significantly easier after a few weeks usually.
On early discomfort: Pretty common in the first few weeks. Sore teeth, achy gums, occasional small sores in the mouth, the lips not closing fully, extra saliva — all signs the soft tissue is stretching, not signs something is wrong. Take it at your own pace. If the soreness gets sharp, take a short break — a few hours or even a day or two off is fine. Stick with it but don't push through pain.
On accelerating results: What matters most is consistent use and then stretching to accelerate. The Fast Method in our Skool community has some stretches we recommend, including the Bite & Hold exercise that works alongside the mouthguard: https://www.skool.com/reviv-2885/classroom/8ca49f79?md=90728adac0e5463680dc40a43e294104
On mouth taping: A lot of folks tape at night to keep the mouth closed and help with guard retention while the tissue is still adjusting. Pairs well with the Reviv.
A good place to learn more before and during the process is our Skool community — 1 month free trial: https://www.skool.com/reviv-2885/about
Why does this work?
Think of the soft tissue (e.g., fascia & skin) covering the bones of the skull as a balloon. When you grind your teeth down, it is as if you're taking air out of the balloon.
When this balloon deflates, it crushes the skull, which in turn crushes the brain and causes cognitive and neurological issues over time.
In general, we as a society like to call this process 'aging.' But if you grind down your teeth faster, you 'age' faster. The good part is you can reverse the process by using the same physics in reverse, i.e., you 'add' height back to the teeth.
How many people have done this process?
Over 20,000 people have started using the appliance and this method since late 2024.
How does sizing work?
Note that there is a 'Size chart' above that you should refer to for measurements of our appliances.
We recommend choosing size based on the instructions in this video (link)
How is R3 different from R1 and R2? Can I start with R3?
Please refer the image above where we compare R3 to R1 and R2.
Note that you can start with R3 and our appliances do not go in any particular order.
Guarantee: R1 has no guarantee. Both R2 & R3 are guaranteed for one year with one free replacement. This replacement warranty is limited to one user per customer and doesn't cover repeat purchases of the same appliance.
What is the appliance made out of?
It is made of premium soft silicone.
OTHER PRODUCTS
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R2 (RevivTwo)
Regular price ¥24,300 JPYRegular priceUnit price / perSale price ¥24,300 JPY -
Repod Ultrasonic Cleaner
Regular price ¥8,900 JPYRegular priceUnit price / per¥8,100 JPYSale price ¥8,900 JPYSale -
EGK Biomechanics Community & Support Membership
Regular price ¥12,200 JPYRegular priceUnit price / perSale price ¥12,200 JPY


