What can we help you with today?
From taking your first impression to picking the right guard — find what you need below or talk to a dental technician directly.
Frequently Asked Questions
Questions about products, materials, turnaround time, and the impression process — answered.
Find your guard in 2 minutes
Not sure which guard is right for you? Answer five questions and we'll match you with the right one.
Taking your dental impression
Step-by-step guidance for getting a great impression at home. Includes video walkthrough and common mistakes to avoid.
Fit issues and adjustments
Something not right with your guard? Every Sentinel guard is covered by our Three-Attempt Fit Resolution policy — we'll make it right.
Returns and the 100-Night Guarantee
Sleep on it for 100 nights. If you're not waking up better, return it. Here's how.
Reorder your guard
Your impression is saved permanently — your next guard is made from the same model. Pick the guard you want and we'll reuse the impression we already have on file.