Iraqi Journal of Applied Physics


When composite resin light-curing is used in dental treatment, a significant amount of heat is produced, which can result in dental injury. This study used two LED processing units versus diode laser methods to measure the temperature increase caused by changes in light intensity during polymerization. At each irradiation time, three samples were collected (10, 20, 30, 40, 50, and 60 s). The findings revealed that light intensity and irradiation time had a significant impact, accounting for 85 percent of the temperature variations. When using a continuous light-cure LEDB with the intensity of light (1400 the temperature rises, which has a negative impact on tooth restoration. Temperatures do not rise when using a light-cure device at intensity levels of light (250 or 900 As a result, for tooth restoration, a laser diode with a lower light intensity (250 is recommended.