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

  • Adam Jossan

    Fits better than expected! It’s by far the most comfortable mouth guard I’ve ever worn. It stays in place. I can talk with it in no problem. I will be back! Thank you!

  • Katie W.

    The hard option is where it’s at! I tried the soft type first and found that it was too flexible for my liking. Switched to the hard guard (they allow you to switch types if you’re not satisfied) and this is EVERYTHING! My tension headaches are gone and I love how comfortable it is. I only had to pay the cost to upgrade ($20). Fast, affordable and the fit is fantastic!

  • Nazrana

    This is my second time buying this because my dog got it the first time! I only wear this sometimes during the day and it has helped so much with my stress headaches! It’s easy, worth it and gives the best results.

  • CC

    This is my story, and I am totally sticking to it !!! My new “no bite your tongue and cheek” soft mouthguards are PERFECTION !!! I sent pics of my molds first and was encouraged to redo one mold. I mailed everything in. Return time was quick. The edges are so totally flat and smooth, no rough curled up material to irritate any tongue or mouth area. Also, they do not touch my gum line which is divine, just as I requested when I sent my molds in. They are like gloves for your teeth. I can barely feel them and they fit snug enough not to fall off but they are not too tight. Soooooo glad I found your company that makes these. I have literally spent a small fortune on other “Dentist Professional Guards” that NEVER met my need. I’m ordering back up second set for travel.
    Thank You !
    Thank You !

  • Brian Mark

    I’m impressed with their professionalism and would highly recommend their services to anyone looking for help with a mouth guard for teeth grinding.

  • Gregory S.

    The sentinel team was very responsive to my needs even after I messed up my dental impression. They provided me with great feedback throughout the process and I was able to take a great impression with the extra putty pack provided. If you’re on the fence just go ahead and do it. I highly recommend this company to everyone!

  • Adam Green

    I just got my Sentinel guard in yesterday and as I’m sure many others are, I was skeptical to order online. I’m happy to report the impression process was much easier than I thought it would be and the guard is the most comfortable one I’ve ever had! Looking forward to wearing it at work. Hopefully these daily headaches will stop once and for all!

  • Tricia Scott

    I love my current guard so much, I ordered 4 more during your black Friday sale! The difference between your price and the dental office is exceptional!

  • Dana O’Malley

    The impression is easy to take and the quality exceeds its price. I like that I can get a replacement for free if I grind through this one within 6 months AND that I don’t have to take my impression again (they hold on to it). The way my stress level is, I might be grinding through this quicker than I think!

  • Teri OConnor

    This is the best mouth guard I’ve found for daytime use. I clench my teeth horribly during the day. I use this while I’m at the gym and in the office. This is a great article they sent me about how to take care of it and keep it from turning yellow. I’ve had many many night guards before and if you don’t take care of them properly they will turn a nasty yellow! Thank you Sentinel team. You have a customer for life! https://sentinelmouthguards.com/how-to-clean-mouthguard/

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.