A curing light unit for final vacuum polymerization of light-cured composite materials, the unit has a mirrored polymerization chamber that guarantees complete illumination for deep and thorough polymerization. Ideal for polymerization of veneers made from Sinfony indirect lab composite to guarantee veneer strength and color stability. Mirrored polymerization chamber provides complete illumination for deep and thorough polymerization. Vacuum technique removes oxygen-inhibited layers for improved surface hardness. Includes three additional programs for versatile use, e.g., for curing MultiTray Light-Cured Maxillary and Mandibular Baseplates.