Hard No-Show Day Mouth Guard for Teeth Grinding and Clenching


Defend Your Teeth From The Daily Grind

Tension headaches, jaw pain, teeth sensitivity and teeth breakage are all common side effects from continuous clenching and grinding. Don’t let teeth grinding and clenching destroy your smile.

We know how frustrating it can be to deal with this problem, which is why we created the Sentinel Mouthguards Hard No-Show Day Mouth Guard.

Our custom-fit mouthguard is specifically designed to protect your teeth from the damaging effects of teeth grinding and clenching during the day. Made from a hard, durable material, our mouthguard offers superior protection and comfort, so you can go about your day with confidence and ease.

At Sentinel Mouthguards, we understand that finding the right solution for your teeth grinding and clenching can be a challenge. That’s why we’ve developed a simple and easy-to-use mold kit that allows you to create a mold of your teeth from the comfort of your own home. Once we receive your mold, we’ll create a mouthguard that fits perfectly to your unique dental profile, ensuring maximum protection and comfort.

Easy 1-2-3 Process!

3 east steps to receive your daytime mouth guard


With years of experience and expertise in the dental industry, you can trust Sentinel Mouthguards to provide you with the highest quality products and exceptional customer service. Say goodbye to the discomfort and pain of teeth grinding and clenching during the day, and say hello to a better, more comfortable you with the Sentinel Mouthguards Hard No-Show Day Mouth Guard.

Please note: if you have 2 or more molars missing, this product may not be suitable as the missing molars can jeopardize the fit.

Smile and Communicate With Perfect Ease

  • Invisible daytime mouthguard offers maximum protection and easy communication
  • Relieves symptoms of daytime clenching and grinding including headaches, teeth pain, jaw pain, neck tension, facial pain, teeth sensitivity
  • Prevents teeth damage such as cracking & chipping
  • Protects the jaw and relieves sore joints
  • Satisfaction guarantee + 6 month warranty

Do you need your custom day mouth guard as soon as possible? You can speed up the process by selecting the expedited shipping option during checkout. This option includes all-inclusive USPS Priority Shipping and a quick turnaround time of just two business days, so you can receive your mouth guard sooner and start enjoying the benefits of superior protection and comfort.

Product Description

why choose sentinel mouthguards graphic compare to dentist made custom night guard

  • Sentinel Mouthguards® No-Show Day Mouth Guard is designed to be virtually undetectable in the mouth.
  • Instant relief from jaw pain, facial pain, headaches & tooth sensitivity. Wear your daytime mouth guard without anyone noticing!
  • Protect against teeth breakage, cracking, damage. Combats pain or tenderness of TMJ
  • Safest materials. BPA, Phthalate, Silicone, Gluten, MMA, Latex Free. Learn more about material safety here
  • Made in the USA by professional lab technicians
  • Easy to use do-it-yourself impression kit ships within 24 hours after purchase
  • Perfect for everyday use in the office, gym, or anywhere! Use anytime you feel stressed or when you’re more prone to teeth clenching
  • Protects veneers, crowns, dental work. 
  • Superior Fit- Proper Jaw Support- Maximum Breathability, Comfort, & Protection.
  • Guaranteed to make you smile or your money back!

example of damage from teeth grinding and jaw clenching


Not sure which guard is right for you? Take our 60 sec. quiz!

which mouth guard is right for you take our quiz

Additional Information

Guard For

Upper teeth (most preferred), Lower teeth


Non-binary (all dental tray sizes will be included), Female, Male

Product Reviews

  • Jon Rogers

    LOVE my new guard and the commitment this company has to using safe ingredients. I had an allergic reaction after using one I bought from Walgreens, a boil & bite. I appreciate the transparency of the materials used. This is high quality and the fit is perfect!

  • Pamela Patterson

    An absolute tooth saver! I have the hard night guard for nighttime and just received this day guard. It’s a perfect fit. I love wearing it during the day and no one can tell I have it in! -Pam

  • Ron

    Just placed an order for a second one to have as a backup. The fit is perfect! Thank you~

  • Chris Oso

    I didn’t realize how badly I was clenching my jaw during the day until I started having headaches! I work from home but on a computer for long periods of time. This works so well. The ordering process was easy. My headaches are GONE and I feel so much better knowing that even if I can’t stop clenching my jaw during the day, my teeth are protected! 5 stars!!

  • Betty Forester

    I found this to be perfect for so many reasons. 1st I found these to be so helpful when I realized I was suffering massive headaches during the day from clenching my teeth. I found the day guard and then later saw that they had other varieties as well. The 3mm hard night guard is perfect for my nighttime grinding and I wear the thinner day guard at work. Being able to have them both and save a lot of money is wonderful. I got 20% off my thicker nighttime guard because the lab already had my impression on file. All you have to do is ask for the coupon code! I highly recommend these!

  • Jason Cumbers

    The communication was clear and helpful throughout the process. I would highly recommend this night guard company for anyone looking for a comfortable, affordable custom guard.

  • Keith Sell

    These day guards are a good value. The other night guards are more to wear thru the night. The teeth impression shaped easily. I was happy to see they sent some extra putty in case I needed to redo it but I didn’t have to. Got a perfect fit. Day guard fits well and I’m a happy customer!

  • Fabian Bibeau


    This is my honest review. I have crooked teeth and was very concerned about how this would fit over my teeth. I took a bad impression the first time around. The team at Sentinel sent me a new kit. They did not charge me for the 2nd kit. I took my time reading the instructions and got a good impression. I usually work about 7 to 8 hours at my computer per day. I wear this guard during the day and it works well. My jaw feels better. I feel good knowing I’m not doing damage to my teeth now. I bought 2 more of them during their xmas deal as backups. Go for it. I definitely recommend them.

  • Nicola J.

    Love it. Last time I went through a different seller and the quality was not half what yours is.I am very happy.thankyou

  • Native hummingbird

    Worth the investment!!
    I was going back and forth with whether to order a whole, standard night guard or the no-show guard. I chose to get a no-show day guard and I’m so glad I did! My order came in much less time than expected, and the quality is outstanding. The cost is about 1/3 of what my dentist wanted to charge. I would definitely order again, and would recommend them highly.

  • Kim Glover

    Ever since learning that most other companies outsource the making of mouth guards to other countries, I’ve decided to stick with this US based company. They’re transparent about the safety of the plastics used and I feel confident in the quality of my mouth guard. -Kim

  • Virginia Lutz

    My dentist told me I needed to be wearing a night guard during the day for my teeth clenching but could only offer me one of the bulky ones he sold at his office. No thank you! I did a search and selected this company on the basis of all the positive reviews. No regrets! I have only positive things to say about my experience. I received the kit and read the instructions carefully.I sent in pictures of two molds I took and the company representative helped me decide which one to mail in. The guard came and fits so perfectly. I wear it all the time. This is my first day guard and it has worked successfully. I highly recommend this guard!

Free Shipping

We ship your kit with everything you need from the molding trays and putty to the prepaid return packaging.

30 day guarantee

Try it out! If you’re not satisfied, you can always return the Mouthguard within 30 days for a full refund.

Save 20%

By entering coupon code "big spender", you save 20% on orders over $200.