used in dental clinics of a university in Malaysia. Materials and Methods: Light intensity
output (LIO) of each LCU was first determined using a light radiometer. A total of 88 LCUs
were used in this study which were divided into three groups based on their LIO as follows:
Group 1 (G1)≥ 1000 mW/cm 2, Group 2 (G2) 701–999 mW/cm 2, and Group 3 (G3)≤ 700
mW/cm 2. Prepared composite resin specimens were then cured using these LCUs and …