No-Show Day Guard for Teeth Grinding and Clenching


Defend Your Teeth From The Daily Grind

The No-Show Day Guard protects the teeth from grinding and clenching while remaining virtually undetectable in the mouth.
This back-cut, soft, flexible custom daytime mouth guard hugs the rear teeth only.

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Smile and Communicate With Perfect Ease

  • Relieves effects of daytime clenching and grinding such as headaches, teeth pain, jaw pain, neck tension
  • Prevents headaches, teeth breakage and cracking
  • Protects the jaw and relieves sore joints
  • Invisible daytime guard offer maximum protection
  • All custom night guards are made in the USA
  • Safest dental materials BPA, MMA, Gluten, Phthalate, Latex, Silicone Free

Product Description

  • Sentinel Mouthguards® No-Show Day Guard is designed to be virtually undetectable in the mouth.
  • Instant relief from facial/jaw pain, headaches, & tooth sensitivity. Wear your daytime mouth guard without anyone noticing!
  • BPA, Phthalate, Silicone, Gluten, MMA, Latex Free. Learn more about material safety here
  • Easy to use do-it-yourself impression kit ships within 24 hours after purchase.
  • Protect against headaches, teeth breakage, cracking, damage. Combats pain or tenderness of TMJ
  • 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. Prevents disrupted sleep patterns.
  • Superior Fit- Proper Jaw Support- Maximum Breathability, Comfort, & Protection. The soft No-Show Day Guard was designed for comfort, flexibility and discreetness.



Product Reviews

  • 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!

  • 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

Free Shipping

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

90 day guarantee

Try it out! If you’re not satisfied, you can always return the Mouthguard within 90 days for a full refund.

Save 20%

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