SleepRight Ultra-Comfort Dental Guard is for night time teeth grinding. This dental guard requires no boiling or microwaving. Its exclusive patented design with body-heat activated self-adjust technology provides a comfortable custom fit. A mouth guard to stop teeth grinding has to be strong. SleepRight Select dental guards have a 5 700 psi bite pad tensile strength and fully articulate to match the bite angle. SleepRight Dental Guards have the best FDA safety record in their class with no FDA adverse events in 19 years. They are non-leaching and non-toxic with no BPA latex silicone or phthalate. SleepRight Slim-Comfort Dental Guards bite pads are designed to adjust forward and backward into four positions for a custom fit. You can be confident it will provide the durability and protection you need.