Great Lakes Orthodontics’ Bioplast® Xtreme Hard/Soft Mouthguard Material provides two degrees of hardness in one material. A transparent, rigid, “V-shaped” section creates extra anterior protection and allows control over the number of teeth covered. Bioplast Extreme provides increased safety and absorption during hard and flat impacts. The material is available in blue, black, and red, and comes in both 4- and 5-mm thickness.