No-Show Day Mouth Guard


Defending Your Teeth From The Daily Grind

Do you find yourself gritting or clenching your teeth during the day? Daily clenching and grinding can cause constant headaches, jaw pain, sensitivity, wear, cracks, chips, and breaks. The damage accumulates over time, resulting in costly dental work.

Ask any dentist- there is simply nothing better to eat, laugh, talk and chew with than natural teeth. We understand the toll that clenching and grinding takes on your dental health.

With our No-Show Day Mouth Guard, your teeth are comfortably protected and your tooth structure stays preserved.

Protecting your teeth and your pocketbook starts here!

Don’t let teeth grinding and clenching destroy your smile.

Our No-Show Day Mouth Guard 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 mouth guard offers superior fit, protection and comfort, so you can go about your day communicating with confidence.

Say no to the daily grind and hello to a healthier you.

sentinel mouthguards smile

Smile and Communicate With Perfect Ease

  • Prevents teeth from grinding and clenching
  • Prevents jaw pain, headaches, teeth pain and sensitivity
  • Protects teeth from chipping and cracking
  • Prevents long term dental issues and future dental repairs caused by clenching and grinding
  • Promotes better sleep and better oral health
  • Satisfaction guarantee + 1 year warranty

Experience the difference in just three simple steps:

Here's how it works 3 easy steps

Since 2012, we have helped thousands of people just like you overcome their battle with teeth grinding and clenching. 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 mouth guard that fits perfectly to your unique dental profile, ensuring maximum protection and comfort.

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

Expert Fit by Professional Lab Technicians

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

Invisible Protection from Daily Grinding and Clenching

Rise and Shine with a Grin or Your Money Back

Nestled in the heart of sunny St. Petersburg, Florida, we’re masters at creating top-notch night guards and mouth guards. Our entire range of products is proudly crafted on American soil by our longstanding team of dental professionals. And here’s our rock-solid pledge to you:

  • 100% satisfaction. We stand behind our products and will provide you with nothing less than our personal best from our long-standing team.
  • 30 Day Satisfaction Guarantee. If you don’t like your new custom guard whether it’s a fit issue or comfort, let us know within 30 days and we’ll refund you.
  • 1 Year Warranty. If you grind through your night guard within 1 year of purchase, we’ll replace it for you free of charge.

What you get:

  • Dental impression kit. We send you plastic trays, dental putty, and a a prepaid envelope to mail back to us.
    You need to have a timer, clean hands, & good solid teeth. No braces. Seriously, putty & braces do not mix.
  • (1) Custom No Show Day Mouth Guard
  • (1) Ventilated retainer case

Should your first attempt at a dental impression miss the mark, there’s no need to stress. We’re here to help by providing a free redo kit, no questions asked.

We’re proud to announce our recognition as Forbes’ Best Night Guard choice for 2023

no-show day mouth guard voted best mouth guard in 2023 Forbes Health

Not sure which guard is right for you? Get expert guidance with our 60 second quiz!

find your night guard match now graphic

example of damage from teeth grinding and jaw clenching

Need additional help? Visit our help center


Additional Information

Guard For

Upper teeth (most preferred), Lower teeth

Product Reviews

  • Ray Pulisciano


    I tried to wear the boil & bite guards with no success. I grind and clench my teeth badly during the day and at night. Got this one for the daytime. Process was easy and guard is comfortable. Super friendly staff! Great buy!

  • Michael Oneil

    I wear it all day every day!

    Couldn’t be happier with this night guard. I can’t stand night guards but this is different. There is no pressure on my teeth. Just stays in place and prevents my teeth from clenching while I’m working. I’m happy with the product and company.

  • Mary A. Franklin

    I needed something that was not going to take up a lot of space in my mouth. The night guard I replaced was big and bulky. Overall, I like and it’s exactly what I paid for & wanted. Shipping was fast. Couldn’t have asked for anything better. *****

  • Brooke R.

    Really helps with my constant clenching. Fits great and not chunky like my old dentist made guard. Super friendly office staff! Thumbs up!

  • Pedro K.

    Loved this so much I ordered a backup. Fits beautifully. This is the first time I’ve ever worn a custom made guard and I’ll never go back. Thank you!

  • Joanne Garnier

    I was hesitant because I didn’t know if I could take my own dental mold of my teeth.
    I messed up the first time but the kit included a backup putty pack. I emailed the company a picture and got an immediate response that the dental mold was good to go.
    Guard fits well. *****

  • Amy Hopkins

    So, first off, these products are made here in the USA and the company is transparent and helpful about the products they use. I have a gluten allergy and I’m also very cautious about the use of plastics. I contacted several other companies and asked them about the safety of their products. Sentinel was the only company to provide me with detailed information about the materials they use. I feel comfortable ordering from them because of this. I’ve worn the guard for several weeks now and have no complaints. Very happy with this product and would highly recommend for daytime teeth clenchers like myself.

  • Jeff Mesker

    I took several weeks to evaluate this product before posting a review.

    Pros: The impression kit arrived quickly and had an extra putty pack for when I messed up (which I inevitably did)
    It’s sturdy (I went with the 2mm) and comfortable. I can smile and talk with it in.
    It’s discreet. The price was good. Way better than my dentist.
    They hold on to the impression in case I want to order a backup.

    Cons: The actual guard took about 1 1/2 weeks to arrive after I mailed in the impression. Wish they would do a faster turnaround.
    The instructions should say to mix impression putty VERY quickly because I waited too long and the putty hardened on me. Luckily they included an extra pack of putty for a 2nd attempt.

    Overall, I am satisfied with my purchase and will probably order a backup guard down the road as my dog seems to love these things.

  • Dillon Waters

    When my daughter’s night guard finally wore through, I tried Sentinel after reading the reviews. She mostly grinds her teeth during the day so after a conversation with the customer service, we went with the day guard. The process works a lot like how it would be handled at the dentist’s office but with fraction of the cost. They send you the impression kit, you send it back to them and within a week or so you receive the guard. The first time we sent the impression, the top wasn’t deep enough so they sent us another kit for her upper teeth. We gave it another go and it worked. The fit is very comfortable for my daughter and so far it seems sturdy. It’s a great alternative way to get your night guard for daytime and I highly recommend purchasing from Sentinel.

  • Jillian Mitchell

    I had been looking for something like this for quite a while. I clench my teeth so badly at work but I have to talk and smile during the day and didn’t want to wear anything that people can see. I chose the 1mm and it’s perfect! Thin and stays in place. Thank you!

  • Chasity Freeman

    I get bad headaches during the day from clenching my teeth. Been wearing the no show day guard for a week now. I wear it at work, at home, at the gym. So far it’s an excellent product! I forget I have it in and no one is the wiser! A+++
    Thank you!

    -Chasity Freeman

  • Brianda Jackson

    No better mouth guard out there! This is it. This company has it all. Excellent customer service, informative, fast, affordable and they make a great product. I tell all my co-workers, friends and family about Sentinel Mouthguards. I’ve been with them since 2012 and I’ll continue to be a lifelong customer. Great work guys!

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.