The last night guard
you ever need to think about.
Built by a dental hygienist who watched patients pay $900 for guards the lab made for a fraction of that — and decided to do something about it.
Built by someone who knows what grinding feels like.
Ashley studied dental hygiene at LSU while playing competitive roller derby. She learned precision in the clinic and resilience on the track. Both would matter.
Working in a dental office, she watched patients pay $500–$900 for night guards that the lab made for a fraction of that cost. The markup wasn't protecting anyone it was just the way things had always been done.
She founded Sentinel to close that gap. Same dental-lab quality. Direct to your door. No middleman markup. And a team that actually wants to help you grind less not just sell you more guards.
Ashley · Founder & Lead Dental Technician
What makes us different
Not just another night guard company. A team of dental professionals committed to doing things the right way.
Hand-finished by dental technicians
Not a machine. Not outsourced. Every guard is shaped, polished, and inspected by hand.
30+ years of clinical experience
Ashley's dental hygiene background plus a lab team with decades of combined expertise.
Medical-grade materials
BPA-free, BPS-free, MMA-free, FDA registered. No shortcuts on what goes in your mouth.
Made in the USA
Every guard crafted in our facility. No exceptions. No overseas labs. No compromises.
The Sentinel Promise
The finishing process is what makes us confident enough to promise this. A guard that's hand-trimmed to your exact bite fits. And a guard that fits doesn't need a guarantee — but we offer one anyway.
100-Night Outcome Guarantee
Sleep on it for 100 nights. If you're not waking up better, return it. A $23 fee covers shipping and materials — everything else is refunded.
Three Attempts to Get It Right
Adjustments, remakes, and one complimentary redo impression kit in any combination. If the fit still isn't right after three attempts, we'll issue a refund minus a $23 fee to cover shipping and impression kit costs. Covered within your 100-night guarantee window.
1-Year Craftsmanship Warranty
Every guard is covered for one year against defects in materials and workmanship — six months on the Comfort Guard. We stand behind what we make.
Real Humans, Real Help
Talk to our dental technicians directly. No scripts, no runaround just expertise.