The Shade Modification II System is the only resin color modifier and opaquer system available that allows for total color, translucency and opacity control of porcelain and composite restorations. By using these shade modifiers, you can be assured of a perfect match to adjacent teeth and assured success when you need to enhance your porcelain veneers and composites to create a polychromatic appearance to your restorations. In contrast to opaquers, Shade Modifiers are generally translucent. They are placed on the tooth before application of the veneer with resin cement. Shade Modifiers can also be mixed into the Ultra-Bond Plus or Block-Out resin cement, if preferred.