激光和机头使用对牙髓的热效应。
Thermal effects on pulp due to laser and handpiece usage.
作者信息
Penn Christina, Beninati Christopher, Mariano Alissa, Dooley Daniel, Harsono Masly, Perry Ronald, Kugel Gerard
机构信息
Tufts University School of Dental Medicine, Boston, Massachusetts.
CTufts University School of Dental Medicine, Boston, Massachusetts.
出版信息
Compend Contin Educ Dent. 2014 Nov-Dec;35(10):e41-4.
OBJECTIVE
The study was designed to compare changes in pulpal temperature during ablation of dental hard tissue while using two established erbium dental laser systems, a new CO2 laser system, and a conventional high-speed handpiece.
METHODS
Eighty non-carious human extracted molars were separated into four sample groups of 20 teeth each. Three laser systems were used, respectively, to ablate the occlusal surface of the teeth in three of the groups for 60 seconds each. The high-speed handpiece was used to drill the occlusal surface of the fourth group for 60 seconds. Pulpal temperatures were measured using thermocouples inserted into each tooth's pulpal chamber prior to ablation.
RESULTS
None of the average temperature increases approached the threshold of 5.5°C at which pulpal damage begins. On average, the pulpal temperature of teeth ablated with the Waterlase MD system increased the most (3.56°C). The traditional handpiece caused the lowest average temperature increase (1.57°C), followed by the LightWalker DT system (3.20°C) and the Solea CO2 system (3.30°C).
目的
本研究旨在比较使用两种已确立的铒牙科激光系统、一种新型二氧化碳激光系统和传统高速手机时，牙体硬组织消融过程中牙髓温度的变化。
方法
80颗无龋的人离体磨牙被分为四组，每组20颗牙。分别使用三种激光系统对其中三组牙齿的咬合面进行消融，每组消融60秒。使用高速手机对第四组牙齿的咬合面进行钻孔，持续60秒。在消融前，使用插入每颗牙齿牙髓腔的热电偶测量牙髓温度。
结果
平均温度升高均未达到牙髓损伤开始的阈值5.5°C。平均而言，使用Waterlase MD系统消融的牙齿牙髓温度升高最多（3.56°C）。传统手机导致的平均温度升高最低（1.57°C），其次是LightWalker DT系统（3.20°C）和Solea CO2系统（3.30°C）。
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