I've tried multiple different types of these devices. I keep coming back to this one. This one has a top and bottom bite guard that is hingesd in the back with an adjustable length hinge. Others are fixed in the front, which doesn't allow you to open your mouth without dislodged their guard. Stay in the lowest recommended length of hinges and give it a little time if you need to get used to it. It works!!

Very Comfortable! This device is a big improvement from the last I had. Better fit, easy to put together, comfortable all night.

This mouthpiece was easier to mold than most - my teeth sank right in. The molding tool was great for perfection without a dentist visit. It pulls my jaw forward aggressively, which I needed for my overbite. It did its job, stopping snores and adjusting my bite. Setup was more involved due to the two-piece design, but it's a worthwhile tradeoff for jaw alignment and breathing.

After my $500 custom dentist-made guard broke, I tried this SmartGuard. Setup was easy, giving a very customizable fit - better than my dentist's! The adjustable bars are simple to install, and it's small enough to close my mouth completely. It's a big improvement over my custom one: smooth sides don't cut cheeks, and it stops snoring! Excellent product!

SmartGuard delivers on its promise! Unlike other devices, it allows jaw movement while keeping it forward to prevent snoring. The unique hinge design works great, and it doesn't restrict tongue movement. It's comfortable and effective, though I'd love even longer rods for maximum jaw advancement. Despite minor quirks, I highly recommend this superior product for a peaceful night's sleep.

​I love the new improved smart guard it’s so comfortable… Since I started using this I have been sleeping do good I wake up feeling great no more headaches from clenching all night…. My jaw isn’t sore anymore.