Pulpal space pressure and temperature changes from Nd: YAG laser irradiation of dentin White star

Abstract

Objectives. To investigate pulpal space pressure and temperature after application of Nd: YAG laser, and high-speed diamond bur on dentin surface. Methods. One and 3 W Nd: YAG laser and high-speed diamond bur were used to remove dentine from twenty extracted premolars. The pulp chambers were monitored for pressure and temperature changes with a pressure transducer and thermocouple, respectively. Results. Regardless of the remaining dentin thickness (RDT), laser irradiation and high-speed diamond bur use generated an increase in pulpal space pressure and temperature (ANOVA and Fisher's LSD tests, P < 0.001). Pressure and temperature increased with an increase in laser power. Three-Watt laser ..