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. Vacuum technique prevents the creation of a surface film. 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.