Hussey D L, Biagioni P A, Lamey P J
Division of Restorative Dentistry, School of Clinical Dentistry, Queen's University of Belfast, UK.
J Dent. 1995 Oct;23(5):267-71. doi: 10.1016/0300-5712(95)91149-h.
To use the technique of infrared thermography for non-invasive monitoring of temperature changes during polymerization of resin composite by measuring the infra-red emission from the surfaces of resin composite restorations during photocuring.
In this study 10 patient volunteers had resin composite restorations placed in upper incisor teeth and during photocuring the temperature rise within the composite was measured using the Thermovision 900 infra-red scanning system.
The results demonstrate that the exotherm is almost instantaneous, occurring as soon as the light source is activated and rising to a peak at approximately 30 s before levelling off. The measurements suggest that a maximum temperature increase of 12 degrees C could occur, although this may only be for a short period (< 15 s).
The range of temperature rise measured in this study (mean 5.4 degree C +/- 2.5 degree C) would suggest that the pulp may be endangered by the temperature rise which occurs during resin composite polymerization in vivo.
通过测量光固化过程中树脂复合材料修复体表面的红外发射，利用红外热成像技术对树脂复合材料聚合过程中的温度变化进行无创监测。
在本研究中，10名患者志愿者的上颌切牙放置了树脂复合材料修复体，在光固化过程中，使用热像仪900红外扫描系统测量复合材料内部的温度升高。
结果表明，放热几乎是瞬间发生的，光源一激活就出现，并在大约30秒时升至峰值，然后趋于平稳。测量结果表明，温度可能会最高升高12摄氏度，尽管这可能只持续很短时间（<15秒）。
本研究中测得的温度升高范围（平均5.4摄氏度±2.5摄氏度）表明，体内树脂复合材料聚合过程中发生的温度升高可能会危及牙髓。
