Abstract
The aims of the present study were to compare: 1)the output temperature of two LED light-curing devices with an average intensity of 1400mW/cm2 after 60 seconds; 2)the influence of the two heat sources at 10, 30 and 60 seconds on the BFS of three encapsulated glassionomer- based restorative cements, and; 3)the effect of time of heat application on the BFS of the three encapsulated GIC?s.