Fitting Instructions (SOVA night guard)

 What you will need

Hot – but not boiling – water (160 °F/ 71 °C)
Fork or similar utensil

Watch the SOVA Night Guard Fitting Video



  1. Wash your hands and the material with soap and water.


2. Heat water in a small bowl to approximately 160 °F/ 71 °C
(hot to the touch, but not boiling).

3.Place your SISU into the hot water and wait until it becomes soft and pliable (use a fork or other utensil to determine mouthguard softness).


4. Once soft, carefully lift the SISU out of the water with a fork. It’s essential that you do not let the softened guard fold on itself. The material will glue together, making it difficult to reshape.

5. Balancing the pliable mouthguard with your thumbs, tilt your head back and open your mouth widely. Using a mirror, insert the mouthguard and bite down gently on the solid bar in the middle of the SISU – just enough to keep the guard in place.


6. Press your tongue to the roof of your mouth while flipping up the softened material to your front teeth. Then starting at the back of your mouth, use your fingertips to mold the material up against your teeth moving from back to front – covering the outside of your teeth to create a solid shield.


7. Once the material is completely molded, close your lips over the mouthguard and gently suck in air until the material has hardened to a snug, perfect fit.

Did you mess up? Unhappy with your fit? Had so much fun that you want to do it all over again? NO PROBLEM! Every SISU guard is remoldable up to 20 times. Simply place your formed SISU back in the hot water, let it soften and straighten out, and there you go! Time for Round 2.

Got Braces? No Problem.

If you or your child are undergoing orthodontic treatment, we ask that you have your orthodontist fit your SOVA for you! He/she will use the appropriate barriers between the guard and braces so that the material, while pliable, doesn’t bond to your brackets. Dr. Cynthia Fee is one of our all-star doctors here at SOVA. She has kindly compiled a list of bullet points instructions to take to your next fitting.

Dear Orthodontist,
Your patient has recently purchased a SOVA night guard. This is great news, because it means
that they are very committed to protecting their teeth from harm.
All we ask is that you please help them fit their mouthguard! We want to make sure that our
custom­fitting guards are best suited to your patient’s specific needs. Please review the bulleted
list below and feel free to reach out if you have any questions.
– If the SOVA night guard is utilized over braces at a point where moderate tooth movement is
taking place (often during early stages of treatment), the guard will likely fit properly for only a
short period of time before needing to be remolded.
– Ideally, you should fit your patient’s mouthguard at a point of orthodontic treatment during
which only minor tooth movement is taking place.
– Block­out material (such as a thinned piece of rope wax) must be used to prevent the
mouthguard material from engaging in the cervical/gingival edge of the bracket and wire.
– Excessive use of block­out material will result in a less retentive mouthguard. – If the
mouthguard is too retentive, it may be adjusted by simply re­heating the guard in the specific
problem area and adjusting as needed.
– Last but not least, always remind your patient to remove their SOVA night guard with care
around their braces!
Thank you so much for your time and support! Again, don’t hesitate to reach out to our team
with any questions that arise.
With love,
Dr. Cynthia Fee

Here’s a list of things to consider when fitting your SISU!


Use water that is hot to the touch to activate your mouthguard Mold your SISU around all of your teeth (including molars) Mold and stretch the material to cover entire tooth surface area Suck in air gently, creating a snug but still comfortable fit


Use boiling water to mold your SISU! Leave your back teeth exposed! Overly stretch the material, creating too-large perforations Suck-in air too enthusiastically, creating a fit that’s too tight


So you’ve fitted your SISU, and you’re ready to hit the field…not quite. Once you’ve fitted your SISU Mouthguard it’s important to check to make sure that it’s fitted properly. A proper fitting guard is essential for the Diffusix Technology in the mouthguard to function.


There is a learning curve when fitting your SISU Mouthguard for the first time. No worries, this can be made easier when you do a couple of things first:

  • If your child has braces, use the adult Aero guard regardless of their age and follow the directions for fitting with braces.
  • Watch the video tutorial with your child
  • Allow ample time for fitting (we recommend two days before needed if possible).
  • Identify the bite pad on the guard, and practice aligning it with the teeth before softening the guard for the first time.
  • The guard is formed by using vacuum pressure (suction). Re-familiarize your child with the concept of suction; grab a straw and practice.

If you become frustrated. Stop and take a break! Call us for help or refer to the numerous other fitting videos on youtube.