Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/46999
Title: Thermal emission by different light-curing units
Authors: Yap, A.U.J. 
Soh, M.S.
Issue Date: 2003
Source: Yap, A.U.J.,Soh, M.S. (2003). Thermal emission by different light-curing units. Operative Dentistry 28 (3) : 260-266. ScholarBank@NUS Repository.
Abstract: This study quantified and compared the thermal emission of different light curing units (LCU). Three LED (Elipar Freelight [3M]; GC e-light [GC]; Coolblu [Dentalsystems.com]) and three halogen (Max [Dentsply-Caulk]; Elipar Trilight [3M]; Astralis 10 [Ivoclar-Vivadent]) lights were selected for the study. Thermal emission of the LCUs, when used in various curing modes, was assessed using a K-type thermocouple and a digital thermometer at distances of 3 mm and 6 mm compared to the conventional halogen LCU (Max). The temperature profiles and mean maximum temperature change (n=7) generated by each LCU were obtained. Data was subjected to ANOVA/Scheffe's post-hoc test and Independent Samples t-test at significance level 0.05. At 3 mm, temperature rise observed with LED lights ranged from 4.1°C to 12.9°C, while halogen lights ranged from 17.4°C to 46.4°C. At 6 ram, temperature rise ranged from 2.4°C to 7.5°C and 12.7°C to 25.5°C for LED and halogen lights, respectively. Thermal emission of LED lights was significantly lower than halogen lights. Significant differences in temperature rise were observed between different curing modes for the same light and between different LED/halogen lights.
Source Title: Operative Dentistry
URI: http://scholarbank.nus.edu.sg/handle/10635/46999
ISSN: 03617734
Appears in Collections:Staff Publications

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