Reviv Brasil

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.

About 5,000 people have started using the appliance and this method since early 2023.

Note that there is a 'Size chart' above that you should refer to for measurements of our appliances.

For R1:
- We generally recommend adults to get a large as our large is not that large and our small is pretty small.
- The small can be used for children from about age 8 and up.
- Most adults with a smaller mouth will be fine with a small or a large, but will generally get a bit more of a stretch with our large.
- We have a special offer to get both sizes for the same price when purchasing the support package. So write to cs@getreviv.com if you want instructions on how to do that.

For R2:
- The R2 large is the same width as the R1 large but is a bit longer. So if you were comfortable with the R1 large we recommend you get the R2 large size.
- The R2 medium is a bit larger than the R1 small and so is good for adults with a smaller sized mouth.
- The R2 does not currently come in a small size.

Here is our view:
Material: R2 is made of liquid silicone which is stronger and far more durable than the R1. This makes R2 a better appliance for folks that clench and grind.
How long it lasts: R1 will probably last 3-4 months before it deforms whereas we believe R2 will last at least a year.
Guarantee: R1 has no guarantee.  R2 is guaranteed for one year with a max of two free replacements.
Design: R2 is a bit easier on the gums as it doesnt ride as high up on the gums as R1
Price: R1 ($25) vs. R2 ($80), however

If you want to read more about the differences then check out this article: https://reviv.substack.com/p/introducing-the-r2-revivtwo

It is made out of 100% food grade silicone.