ARGEN CORP. offers quality zirconia discs to fit all your metal-free restorative needs. ArgenZ Esthetic offers high translucency providing beautiful esthetics for full contour restorations. ArgenZ Ultra is made for strength, ideal for posterior crowns and bridges. Both compositions are available in 98-mm stepped discs in a number of thicknesses, ranging from 10mm to 25mm, which easily fit most major mills.