Er:YAG激光联合次氯酸钠对管间峡区的清理作用

上海口腔医学 ›› 2016, Vol. 25 ›› Issue (5): 532-537.

Er:YAG激光联合次氯酸钠对管间峡区的清理作用

周梦琪¹, 王昊明¹, 肖家祁², 洪瑾¹

1.上海交通大学医学院附属第九人民医院·口腔医学院口腔特需科,上海市口腔医学重点实验室,上海 200011；
2.上海交通大学医学院微生物实验室,上海 200025

收稿日期:2016-01-13 修回日期:2016-03-07 出版日期:2016-10-25 发布日期:2016-11-10
通讯作者: 洪瑾,E-mail: hongjin1221@yahoo.com
作者简介:周梦琪（1989-）,女,硕士,E-mail:nancy77hello@sina.com
基金资助:
上海市科学技术委员会科研计划项目( 134119a2002)

Evaluation of root canal isthmus debridement efficacy of Er:YAG laser in combination with sodium hypochlorite

ZHOU Meng-qi¹, WANG Hao-ming¹, XIAO Jia-qi², HONG Jin¹

1.First Dental Department, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine; Shanghai Key laboratory of Stomatology. Shanghai 200011;
2.Microbiology Laboratory, Shanghai Jiao Tong University School of Medicine. Shanghai 200025, China

Received:2016-01-13 Revised:2016-03-07 Online:2016-10-25 Published:2016-11-10

摘要/Abstract

摘要： 目的评价Er:YAG激光与NaClO联合应用对根管及管间峡区内有机碎屑的清理效果,为探索新型根管及管间峡区清理技术提供实验依据。方法挑选经过统一根管预备后含有管间峡区的前磨牙50颗,随机分为5组,分别采用以下方法进行处理：A组仅使用1.0%NaClO冲洗1 min,B、C、D组分别用0.5、1.0、2.0 W Er:YAG激光照射1 min,同时联合使用1.0%NaClO 冲洗,E组不做任何处理。标本脱钙包埋后切片,行H-E染色后采集图像进行观察,测量根管及管间峡区内剩余有机碎屑的含量,分别计算根管及管间峡区的清洁度。采用SPSS 13.0软件包对数据进行统计学分析。结果A、B、C、D 4组根管清洁度分别为95.24%、96.53%、97.63% 和 98.22%,管间峡区清洁度分别为16.50%、51.48%、52.56%和53.83%,B、C、D 3组根管及管间峡区清洁度均优于A组,差异显著（P<0.05）。B、C、D 3组间比较根管及管间峡区清洁度无显著差异（P>0.05）。结论Er:YAG激光和NaClO冲洗液联合应用可获得较理想的根管及管间峡区清理效果,有望成为一种新型、有效的根管及管间峡区清理技术。

关键词: Er:YAG激光, 管间峡区, NaClO, 清洁度

Abstract: PURPOSE: To histologically evaluate the efficacy of sodium hypochlorite (NaClO) in combination with Er:YAG (erbium-doped yttrium aluminium garnet) laser in dissolving necrotic tissue and cleaning root canals as well as canal isthmuses. METHODS: After scanned by cone-beam CT (CBCT), 50 well-prepared premolars with root canal isthmuses were selected and randomly assigned into 5 groups. They were subsequently subjected to different regimens as followed: group A-irrigated with 1% NaClO for 1 minute, group B- irradiated by Er:YAG laser at 0.5 W combined with 1% NaClO irrigation for 1 minute, group C- irradiated by Er:YAG laser at 1.0 W combined with 1% NaClO irrigation for 1 minute, group D- irradiated by Er:YAG laser at 2.0 W combined with 1% NaClO irrigation for 1 minute,group E- negative control. After histological preparation and staining, the cross-sections were evaluated for percentage of tissue removal from root canals and isthmuses. The cleanliness values were calculated using SPSS 13.0 software package. RESULTS: The mean percentage of root canals in group A, B, C and D was 95.24%, 96.53%、97.63% and 98.22%, respectively, and the mean percentage of isthmuses was 16.50%, 51.48%, 52.56% and 53.83%, respectively. The mean percentage of root canal and isthmus cleanliness values were significantly higher in group B, C and D (P<0.05) than that in group A. There was no significant differences of root canal and isthmus cleanliness among group B, C and D. CONCLUSIONS: Er:YAG laser combined with 1% NaClO irrigation may be used effectively in root canal and root canal isthmus cleanliness as a new method.

Key words: Er:YAG laser, Root canal isthmus, Sodium hypochlorite, Cleanliness

中图分类号:

R781.3

周梦琪, 王昊明, 肖家祁, 洪瑾. Er:YAG激光联合次氯酸钠对管间峡区的清理作用[J]. 上海口腔医学, 2016, 25(5): 532-537.

ZHOU Meng-qi, WANG Hao-ming, XIAO Jia-qi, HONG Jin. Evaluation of root canal isthmus debridement efficacy of Er:YAG laser in combination with sodium hypochlorite[J]. Shanghai Journal of Stomatology, 2016, 25(5): 532-537.

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