Yu D, Powell G L, Higuchi W I, Fox J L
Department of Pharmaceutics, University of Utah, Salt Lake City.
J Clin Laser Med Surg. 1993 Jun;11(3):119-22. doi: 10.1089/clm.1993.11.119.
Previous studies have reported dental pulp chamber temperature changes using only one beam size per laser. This study was designed to evaluate the effects of beam size, wattage, and energy density on pulp chamber temperature changes of extracted human teeth for three lasers (CO 2, Argon, Nd:YAG). During laser irradiation of the outer enamel surface, a thermocouple was placed in the pulp chamber which measured and recorded the temperature changes. This was done for each combination of lasing dosimetry parameters. In all cases the recorded temperatures increased with the increase in beam size for a given energy density (J/cm 2) and wattage. Also, the recorded temperatures increased with increased energy density for a given wattage and beam size.
以往的研究仅针对每台激光器使用一种光束尺寸来报告牙髓腔温度变化。本研究旨在评估光束尺寸、功率和能量密度对三种激光器（二氧化碳、氩离子、钕钇铝石榴石）所致离体人牙牙髓腔温度变化的影响。在激光照射牙釉质外表面期间，将一个热电偶置于牙髓腔中，用于测量和记录温度变化。对每种激光剂量学参数组合均进行此操作。在所有情况下，对于给定的能量密度（焦耳/平方厘米）和功率，记录的温度随光束尺寸的增加而升高。此外，对于给定的功率和光束尺寸，记录的温度随能量密度的增加而升高。
