Effect of CO2, Nd:YAG, and ArF excimer lasers on dentin morphology and pulp chamber temperature: an in vitro study.
Effect of CO2, Nd:YAG, and ArF excimer lasers on dentin morphology and pulp chamber temperature: an in vitro study.
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CO2、Nd:YAG 和 ArF 准分子激光对牙本质形态和牙髓室温度的影响：一项体外研究。
DOI：
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发表时间：
2000
影响因子：
4.2
通讯作者：
Bülent Başaran
中科院分区：
文献类型：
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作者：
C. Türkmen;M. Günday;M. Karaçorlu;Bülent Başaran
本研究比较了三种激光系统：CO2（10.600 nm）、Nd：YAG（1.064 nm）和ArF准分子（193 nm）激光对牙本质硬组织和髓室温度升高的影响。66颗第三磨牙随机分为3组。制作I类洞以暴露牙本质，并通过在颈部区域钻孔去除髓室中的牙髓。随后用硅脂重新填充髓室，并通过孔将NiCr/NiSi热电偶插入髓室。然后用每种激光器以相同的设置（3 W，2 mm光斑尺寸，20 pps）对牙本质表面进行激光照射30 s。平均内部温度升高如下：CO2，37 ℃; Nd：YAG，28 ℃; ArF准分子，1 ℃。扫描电子显微镜的牙本质在咬合腔显示广泛的碳化，孤立球的重结晶材料，并存在玷污层在一些牙本质小管口的CO2和Nd：YAG激光的牙齿。ArF准分子样品也观察到了牙本质层;然而，它们表现出比其他样品少得多的表面空洞，并且似乎在牙本质上发生了很小的形态变化。
This study compared the effect of three laser systems: CO2 (10.600 nm), Nd:YAG (1.064 nm), and ArF excimer (193 nm) lasers on dentin hard tissue and on temperature increases of the pulp chamber. Sixty-six third molar teeth were used and randomly divided into three groups. A class I cavity was made to expose the dentin, and the pulp in the pulp chamber was removed via a hole bored in the cervical area. The pulp chamber was subsequently refilled with silicon grease, and a NiCr/NiSi thermocouple was inserted through the hole into the pulp chamber. The dentin surface was then lased for 30 s at the same settings (3 W, 2 mm spot size, 20 pps) with each laser. The average internal temperature increases were as follows: CO2, 37 degrees C; Nd: YAG, 28 degrees C; and ArF excimer, 1 degrees C. Scanning electron microscopy of the dentin in the occlusal cavity revealed extensive carbonization, isolated balls of recrystallized material, and the presence of smear layer at some dentinal tubule orifices for the CO2 and Nd:YAG lased teeth. Smear layer was also observed for the ArF excimer samples; however, they exhibited far less surface cavities than the others and seemed to undergo little morphological change on the dentin.
影响因子：
4.3
作者：
J. White;Mark C. Fagan;H. Goodis
通讯作者：
J. White;Mark C. Fagan;H. Goodis
Ho: YAG 激光牙本质消融：使用立体摄影测量法测量能量与体积的相关性。
影响因子：
4.2
作者：
Stevens,BH;Trowbridge,HO;Harrison,G;Silverton,SF
通讯作者：
Silverton,SF