What is the best night guard material?

Material selection depends on bruxism severity and the patient's bite load. Heavy grinders compress soft EVA guards within 3 to 6 months, distorting the occlusal surface and losing the protective geometry. Processed hard acrylic holds its occlusal contacts through repeated heavy load cycles and is the material most dental sleep labs fabricate for high-force cases. The trade-off is patient comfort during the first 2 to 4 weeks of adaptation.

For dentists ordering through a lab, the fabrication method matters as much as the material choice. Pressure-formed hard acrylic over a stone model is the baseline. CAD-milled PMMA disc blanks produce a denser, more homogeneous appliance with tighter thickness tolerances, typically 2 mm to 4 mm depending on arch space, and the milled surface polishes more cleanly than poured acrylic. At Dani Dental, night guards are milled from puck-stock PMMA rather than pressure-formed, which reduces internal porosity and extends the appliance lifespan.

For general dentists managing a mixed restorative and sleep-bruxism caseload, a reliable lab-fabricated hard acrylic guard eliminates the chair time spent adjusting chairside-formed appliances. A well-fitted milled guard typically needs one brief occlusal refinement appointment versus two to three for soft guards that distort during seating.