Mouthguard Fitting Guide

Mouthguards are one of the most important pieces of protective equipment an athlete can have. According to the American Dental Association, a properly fitted mouthguard should be part of every athlete's gear, regardless if their sport involves body contact or not. Properly fitting your guard against your teeth makes wearing one more comfortable and increases its protective abilities as well as your athletic performance.

For all Nxtrnd mouthguard fitting instructions, please click on the appropriate model:

Nxtrnd RUSH Mouthguard Fitting Instructions

Nxtrnd CLASSIC Mouthguard Fitting Instructions

Nxtrnd ONE Mouthguard Fitting Instructions

Nxtrnd Braces Mouthguard Fitting Instructions

Nxtrnd Zero Mouthguard Fitting Instructions

For general instructions on how to size your mouth guard, please follow the steps below

You will need:

  • 1 pot with water 
  • 1 cup of ice water
  • 1 mirror
  • 1 timer
  • 1 slotted plastic spoon

Step 1:

Fill a pot with 3 inches of water and bring the water to a boil.

Step 2:

Remove the boiling water from the heat source and let the water cool for 30 seconds.

Step 3:

Submerge the mouthguard with the inner liner facing down in the water for 20-30 seconds until the mouthguard walls begin to deform. (See pdf attachements above, for the exact timing which will vary depending on the model of mouth guard.)

Step 4:

Remove the mouthguard from the hot water and let cool under cold water for 2 seconds.

Step 5:

Using a mirror, gently insert the mouthguard into your mouth by aligning it with the center line of your front teeth. Once aligned, using your fingers, press down on your molars and proceed to the next step.

Step 6:

Bring your lower jaw forward and lightly bite down on the mouthguard while pushing the front part of the guard against your teeth and up towards your gums.

Step 7:

Continue the process of pressing against the edges of the guard while sucking the air out for 60 seconds.

Step 8:

Remove the moulded mouthguard from your mouth and place it in ice water for 5 minutes. After 5 minutes, try the mouthguard on and make sure it fits tightly around your teeth.


When your mouthguard fits correctly, you’ll wreap all the benefits of wearing a mouthguard, which includes;  protecting your teeth from chips and cracks and eliminating side effects like jaw pain, facial pain, and headaches.

The teeth you have are the only ones you’re ever going to get, so it’s essential you do everything in your power to protect them. For many athletes, that means wearing a Nxtrnd mouthguard.

At Nxtrnd Mouthguards, our mission is simple:

"Enhance athletic performance by providing innovative protection equipment."

To find a well made mouthguard model specifically designed for your sport, please click here.

Contact us to learn more today.

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