Kıvanc B H, Arısu H D, Sağlam B C, Akça G, Gürel M A, Görgül G
Department of Endodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey.
Department of Restorative Dentistry, Faculty of Dentistry, Gazi University, Ankara, Turkey.
Niger J Clin Pract. 2017 Dec;20(12):1527-1530. doi: 10.4103/1119-3077.187333.
The aim of this study was to evaluate the antimicrobial effects of diode laser and temperature rise on the root surface during application.
Thirty-six teeth were chemomechanically prepared and irrigated with 2.5% sodium hypochlorite and 17% ethylenediaminetetraacetic acid, and then autoclaved and incubated with a suspension of Enterococcus faecalis. The specimens were randomly divided into three groups (n = 12): Group 1, irradiated by diode laser at 1.2 W; Group 2, irradiated by diode laser at 2 W; and Group 3, irradiated by diode laser at 3 W. The grown bacteria were counted and the mean numbers of the each test tube were determined. The temperature was measured on the external apical third of the root during laser application. The mean values of results for each group were compared using one-way analysis of variance and Tukey test.
No significant difference was obtained among the test groups in terms of the colony counts (P > 0.05). According to the temperature changes, there was a significant difference between groups (P < 0.05). Temperature rises were 16.79°C, 10.20°C, and 6.25°C in Group 3, Group 2, and Group 1, respectively.
Diode laser irradiation with 1.2 W demonstrated comparable performance with 2 W and 3 W power sets for elimination of E. faecalis from root canal with less temperature rise.
本研究旨在评估二极管激光及其在应用过程中根部表面温度升高的抗菌效果。
对36颗牙齿进行化学机械预备，并用2.5%次氯酸钠和17%乙二胺四乙酸冲洗，然后进行高压灭菌并与粪肠球菌悬液孵育。将标本随机分为三组（n = 12）：第1组，用1.2W二极管激光照射；第2组，用2W二极管激光照射；第3组，用3W二极管激光照射。对生长的细菌进行计数，并确定每个试管的平均数。在激光应用过程中测量牙根根尖三分之一处的外部温度。使用单因素方差分析和Tukey检验比较每组结果的平均值。
各试验组之间的菌落计数无显著差异（P > 0.05）。根据温度变化，各组之间存在显著差异（P < 0.05）。第3组、第2组和第1组的温度升高分别为16.79°C、10.20°C和6.25°C。
1.2W二极管激光照射在根管中消除粪肠球菌方面与2W和3W功率组表现相当，但温度升高较少。
