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The purpose of this study was to compare temperature rises in the pulp chamber induced by halogen, plasma arc, and conventional light-emitting diode (LED) curing units with that induced via a new generation LED-curing unit (VALO) in extra power mode. A Class I cavity was prepared on the occlusal surface of 80 extracted caries- free mandibular third molars, which were filled with a microhybrid composite. A thermocouple wire was inserted into the pulp chamber of each tooth to measure temperature changes. The greatest temperature increases were observed during polymerization of composite resin with a halogen curing unit (3.2 degrees Celsius), followed by plasma arc curing (2.07 degrees Celsius) and VALO curing (1.44 degrees Celsius); the lowest temperature rise was with conventional LED curing (1.01 degrees Celsius). There were no statistically significant differences between conventional LED and VALO curing in extra power mode regarding pulp chamber temperature increases when polymerizing composite resin.

Citation

Kenan Cantekin, Suleyman Kutalmis Buyuk, Ebru Delikan, Kübra Pedük, Sezer Demirbuga. Pulp chamber temperature increase from curing light units: an in vitro study. Journal of dentistry for children (Chicago, Ill.). 2014 Sep-Dec;81(3):128-32

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PMID: 25514256

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