Evaluation of the bactericidal effect of Er,Cr:YSGG, and Nd:YAG lasers in experimentally infected root canals

被引：72
作者：
Wang, Qian-qian
Zhang, Cheng-fei [1 ]
Yin, Xing-zhe
机构：
[1] Peking Univ Sch, Special Dent Dept, Beijing 100081, Peoples R China
[2] Hosp Stomatol, Beijing, Peoples R China
来源：
JOURNAL OF ENDODONTICS | 2007年 / 33卷 / 07期
关键词：
bactericidal; Er; Cr : YSGG laser; Nd : YAG laser; root canal;
D O I：
10.1016/j.joen.2007.03.017
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
The aim of this study was to evaluate the bactericidal effect of the Er,Cr:YSGG laser and the Nd:YAG laser in experimentally infected root canals. Sixty single-rooted teeth with straight canals were selected. After preparation and sterilization, the specimens were inoculated with Enterococcus faecalis for 3 weeks. After irradiation by lasers, the number of bacteria in each root canal was examined. The Er,Cr:YSGG laser gave a reduction of 77% after irradiation at 1 W and 96% at 1.5 W, but there was no significant difference (p > 0.05). The Nd:YAG laser gave a reduction of 97% at 1 W and 98% at 1.5 W, and there was no significant difference (p > 0.05). Compared with the Er,Cr:YSGG laser, the Nd:YAG laser is more effective (p < 0.05). In conclusion, both lasers systems have a significant bactericidal effect in infected root canals, and the Nd:YAG laser is more effective than the Er,Cr:YSGG laser.
引用
收藏
页码：830 / 832
页数：3
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