From PROTECH PROFESSIONAL PRODUCTS, UBAR is a self-curing, high-impact acrylic containing the patented 4-Meta® bonding agent. Unlike other acrylics that lie on top of the metal, UBAR bonds directly to chrome-cobalt and nickel-chrome, and cures porosity-free without a pressure pot. ProTech Plus Hard Reline and Repair Acrylic is strong, dense, color stable and ideal for quick repairs and hard relines. It polymerizes on the bench without porosity, doesn’t require pressure potting and matches the most popular denture shades.