Reviv Fitting Guide: How to Customize for Day or Night Use

So you’ve got your Reviv Mouthguard—now what?

Unlike clunky dentist splints or Amazon boil-and-bites, Reviv is engineered to support posture, breathing, and muscle relaxation—but only if it’s fit correctly.

The good news?
Fitting Reviv is simple, remoldable, and takes under 10 minutes.

Whether you want to use it for restful sleep, day clenching, posture support, or all three—this step-by-step fitting guide will help you customize your Reviv for maximum comfort and effectiveness.

Let’s dive in.

1. Know Your Use Case: Day vs Night Fit

Before you start molding, ask yourself:

✔ Are you primarily using it at night?

You’ll want a snug, low-profile fit that:

• Holds your jaw in aesthetic rest position
  
  
• Supports airway opening
  
  
• Doesn’t feel bulky while lying down
  

✔ Using it during the day?

You want a slightly tighter fit for:

• Talking and sipping water without removing it
  
  
• Training jaw rest posture while working, driving, or meditating
  
  
• Stress-induced clenching relief
  

👉 Tip: Many users remold one Reviv for night and buy a second unit for daytime posture training.

2. Tools You’ll Need

• Your Reviv mouthguard
  
  
• A mug or bowl of hot water (around 170°F or 76°C)
  
  
• A timer
  
  
• A mirror
  
  
• A clean paper towel or cloth
  
  
• Cold water for setting the fit
  

3. The 10-Step Reviv Fitting Process (Night Use Default)

Step 1: Boil water, then let cool for 30–60 seconds

You want hot—not boiling—water.

Step 2: Submerge Reviv for 60–90 seconds

Use tongs or a spoon. It should feel soft, but not floppy.

Step 3: Shake off water and place in your mouth

Center it over your upper teeth.

Step 4: Close gently

Let your lower jaw rest naturally in its relaxed position.
Don’t bite hard. Don’t clench. Just let it sit where it feels calm.

Step 5: Press with fingers

Push the outer material gently against your teeth and gums.

Step 6: Suck in gently to form a slight vacuum

This creates retention without bulk.

Step 7: Keep it in place for 60 seconds

Hold your lips closed and breathe through your nose.

Step 8: Remove and place in cold water

Let it set for at least 1–2 minutes.

Step 9: Try it on

It should feel snug, centered, and invisible once you close your mouth.

Step 10: Remold if necessary

Not perfect? Repeat the steps—Reviv can be remolded multiple times without damage.

👉 Learn more: How to Remold a Mouthguard Correctly (and Why Reviv Makes It Easy)

4. Adjusting for Daytime Use

If you’re fitting Reviv specifically for day use, follow the same process above but add slight suction while holding the jaw more upright (as you naturally sit or stand).

What to aim for:

• A fit that holds securely even when talking
  
  
• Not so tight that it causes pressure
  
  
• Can be worn passively during meetings or work sessions
  

5. What the Fit Should Feel Like (Checklist)

✅ No clenching required to hold in place
✅ Doesn’t touch the back molars too tightly
✅ Sits comfortably without overextending the lips
✅ Lets your jaw rest—not strain or hover
✅ Lets you breathe through your nose with ease
✅ Doesn’t press your jaw backward

 

6. How to Know You Got It Right

For Night Use:

• You fall asleep faster
  
  
• You wake up with less jaw tension
  
  
• You stop grinding without waking mid-clench
  
  
• You notice less puffiness or soreness in the jaw/neck/face
  

For Day Use:

• You’re more aware of clenching
  
  
• You relax your jaw while typing, scrolling, or driving
  
  
• Your posture improves subtly throughout the day
  

7. Bonus: Use Mirror Feedback

Fit in front of a mirror and check:

• Are your cheek muscles relaxed?
  
  
• Are your lips closed comfortably?
  
  
• Does your chin hang slightly back without tension?
  

That’s aesthetic rest position—the holy grail of jaw alignment.

👉 Related read: The Aesthetic Rest Position vs. Regular Mouthguards: Why It Matters

8. Don’t Over-Clench When Molding

Old habits die hard.

Some users instinctively bite down hard during fitting—but this locks in the wrong position.

Instead:
Let your lower jaw float up to meet the guard—don’t force it.

You’re training rest, not resistance.

9. When to Remold

You should remold Reviv if:

• Your bite has shifted (especially after bodywork or dental treatment)
  
  
• You’ve clenching more than usual
  
  
• The guard starts to feel loose or uneven
  
  
• You want to repurpose it for a different use (e.g., switching from night to day)
  

10. Need Two? Here’s Why Many Users Double Up

• One for nighttime jaw decompression
  
  
• One for daytime clench training/posture correction
  

This lets you:

• Maintain cleanliness
  
  
• Customize fit per use
  
  
• Avoid overuse/stretching of a single unit
  

👉 Check out Reviv product options here

 

Frequently Asked Questions

Q1: What if the fit feels too tight or uneven?
Just remold. Reviv is built to withstand multiple boil-and-fit cycles.

Q2: Can I use the same Reviv for day and night?
Yes, but many users find having two helps preserve the fit and hygiene.

Q3: How long does the fitting process take?
Less than 10 minutes from start to finish.

Q4: Will it work for small jaws or narrow bites?
Yes. Reviv is flexible and conforms to most mouth shapes.

Q5: Is remolding bad for the material?
 Not at all. Reviv is made for safe, repeated reshaping.

Conclusion: Fit It Once, Use It Forever

Your jaw alignment starts with the right foundation—and Reviv gives you control over it.

No expensive lab.
No dental impressions.
No waiting rooms.

Just you, hot water, and a better bite.

👉 Click here to get your Reviv Mouthguard now