Rise in Pulp Chamber Temperature after Activation with Different Curing Lights on Bleached Teeth

The purpose of this study was to evaluate rise in pulp chamber temperature after activation with different curing lights on bleached teeth. Bleaching has been used as a corrective measure for treatment of discolored teeth. It can be done internally on non-vital teeth or externally on vital teeth. A total of 100 freshly extracted non-carious human maxillary central and lateral incisor teeth were used in this study. The prophylaxis of the tooth crown was performed using rubber cup with pumice. Diode laser showed higher temperature rise as compared to LED because diode laser have higher energy output and had a higher wavelength which contain high energy photon due to which it increases the temperature of pulp chamber and shortens the duration of bleaching procedure. Intensity and characteristics of curing lights played an important role in temperature increase. Infrared digital thermometer is a viable means of quantifying the change in temperature during tooth bleaching with light curing units. Higher power intensity curing lights should be used for shorter period of time in order to avoid undesired pulpal response.