Effect of laser treatment on the root canal of human teeth.
Effect of laser treatment on the root canal of human teeth.
复制标题
激光治疗对人类牙齿根管的影响。
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
K. Matsumoto
中科院分区：
文献类型：
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作者：
M. Azam Khan;M. Fazlur Rahman Khan;M. Wahiduzzaman Khan;H. Wakabayashi;K. Matsumoto
本研究旨在探讨Nd：YAG激光、CO2激光和氩激光对离体牙根尖部形态和温度的影响。研究了72颗单根人类牙齿。根管预备采用常规方法。通过光纤或金属尖端对根管的顶端部分进行激光治疗。用热成像法记录温度。三分之二的标本用黑色印度墨水和36%的银氟化铵溶液染色。所有的样品都用不同强度的三种激光照射，并记录温度。一半标本用于光学显微镜和扫描电镜观察，另一半标本用于光学显微镜下的组织病理学检查。扫描电子显微镜评价表明，激光能量蒸发沉积的碎片，产生釉状表面。组织病理学研究显示锥形、扩大的根尖激光区域。所有三种激光装置都能以这种方式使碎片汽化，但形态变化的程度在很大程度上取决于能量水平和持续时间。氩激光器产生的温度最高。
The purpose of this study was to examine the morphological and temperature changes of the apical portion of human extracted teeth treated by Nd: YAG, CO2 and Argon-lasers. Seventy-two single-rooted human teeth were studied. The root canals were prepared conventionally. Laser treatment of the apical portion of the canal was carried out by means of an optic fiber or metal tip. Temperatures were recorded thermographically. Two-thirds of the specimens were stained with black India ink and 36% silver ammonium fluoride solution. All specimens were irradiated by the three types of lasers at several intensities and the temperatures were recorded. Half of the specimens were prepared for the telescopic light microscope and for scanning electron microscopic observation, and the rest for histopathological examination by light microscope. The scanning electron microscopic evaluation showed that the laser energy vaporized the deposited debris, producing a glaze-like surface. The histopathological investigation revealed a tapered, enlarged apical lased area. All three laser devices were capable of vaporizing the debris in this way but the degree of morphological change was highly dependent on energy level and duration. The Argon-laser produced the highest temperatures.
影响因子：
3
作者：
PASHLEY, DH;GALLOWAY, SE
通讯作者：
GALLOWAY, SE