Omnichroma Blocker Flow, 3g Syringe. A low viscosity light-cured material which can be placed in 3.5mm increments. Utilizing Smart Chromatic Technology and uniformly sized supra-nano spherical fillers OMNICHROMA Flow is capable of shade-matching any tooth color from A1 to D4. Unprecedented shade-matching ability and esthetics. Exceptional handling, polishability, and strength. Shade matches both before and after bleaching. Reduction of inventory and of expired composites. OMNICHROMA is the world's first universal composite that esthetically matches every patient, from A1 to D4, with a single shade. Its uniformly sized supra-nano spherical fillers (260nm spherical SiO2-ZrO2) allow OMNICHROMA to match every one of the 16 VITA classical shades, a science that we call Smart Chromatic Technology.