Table 1: Characteristics of light curing units.

LCUs Manufacturer LCU Type Irradiation
Ultralume2 Ultradent/USA Diode 40 s, 450 mw/s
Bluephase 16i Ivoclar/Vivadent High powered diode 10 s, 1800 mw/s
Melles Griot USA Argon laser 40 s, 500 mw/s