Damage Control Mouthguards Killer One Mouthguards There is a better way to play. Our High Impact Mouth guards are the most comfortable, best fitting and protective boil and bite mouth guards. Our High Impact Mouth guards are made out of Damp Rotech material. Damp Rotech is a damping material that is 150% more shock absorptive than the material used by most mouth guard companies. Includes a $10,000 Limited Dental Warranty