Jet XR™ Opaque Powder is an autopolymerizing acrylic polymer with radiopaque properties (the equivalent of 1.8 mm of aluminum). Jet XR™ Radiopaque Acrylic Resin is intended for the fabrication of methacrylate-based acrylic appliances and used wherever a radiopaque acrylic dental device is useful in establishing an anatomical location or site, such as a provisional implant stent.