不同辅助根管冲洗技术对根管壁清洁效果的实验研究  

Cleaning Effectiveness of Different Irrigation Techniques on Root Canal Walls:an in vitro Study

作　　者：张含 王素苹 任颖超 孔祥红 王丹丹[1] 肖燕[1] ZHANG Han;WANG Suping;REN Yingchao;KONG Xianghong;WANG Dandan;XIAO Yan(Department of Stomatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China)

机构地区：[1]郑州大学第一附属医院口腔医学中心,河南郑州450000

出　　处：《口腔医学研究》2021年第9期805-809,共5页Journal of Oral Science Research

基　　金：国家自然科学基金青年项目(编号:81900993);河南省科技攻关项目(编号:192102310079)。

摘　　要：目的:体外比较注射器冲洗技术、被动超声荡洗技术、EDDY声波荡洗技术及PIPS-Er:YAG激光荡洗技术的对根管壁玷污层的清洁效果。方法:收集郑州大学第一附属医院口腔颌面外科新鲜拔除的下颌前磨牙60颗,将所有离体牙冠部截断,保留15 mm的根长,ProTaper Universal机用镍钛锉预备至F4后随机分为4组,分别采用注射器冲洗、被动超声荡洗、EDDY声波荡洗、PIPS-Er:YAG激光荡洗4种不同辅助根管冲洗技术行根管冲洗,最后将所有样本沿牙长轴劈开,取其中形态较完整的一半,扫描电镜下观察根上、根中和根下段标记区域玷污层清除情况并拍摄照片,最后对拍摄的扫描电镜图片进行玷污层评分及统计分析。结果:在根上段,4组样本间玷污层评分差异无统计学意义(P>0.05)。在根中段和根下段,被动超声荡洗组、EDDY声波荡洗组、PIPS-Er:YAG激光荡洗组的根管内壁玷污层评分均低于注射器冲洗组,差异有统计学意义(P<0.05)。在根下段,PIPS-Er:YAG激光荡洗组玷污层评分低于其余各组,差异有统计学意义(P<0.05)。结论:PIPS-Er:YAG激光荡洗技术具有良好的根管清洁效果。被动超声荡洗技术与EDDY声波荡洗技术的清洁效果优于注射器冲洗技术。Objective:To compare the effect of four different irrigation techniques on smear layer removal in root canals in vitro.Methods:Sixty mandibular premolars extracted from patients in the Department of Oral and Maxillofacial Surgery of the First Affiliated Hospital of Zhengzhou University were collected.All the crowns of the single-root human teeth were cut off and the root length was trimmed to 15mm.The specimens were instrumented with ProTaper Universal Ni-Ti files.Then they were randomly divided into four groups according to irrigation techniques:needle irrigation(NI),passive ultrasonic irrigation(PUI),EDDY irrigation(EDDY),and PIPS-Er:YAG laser irrigation(PIPS).Finally,the roots were split longitudinally and observed using scanning electron microscopy(SEM)for assessment of smear layer removal.The smear layer score was assessed and the results were statistically analyzed.Results:In the coronal part of the canal,the mean score of smear layer was similar among four groups(P>0.05).In the middle and apical part of the canal,the smear layer score in PUI group,EDDY group,and PIPS group were significantly lower than those in NI group(P<0.05).In the apical part of the canal,the smear layer score in PIPS group was lower than that of other groups(P<0.05).Conclusion:PIPS-Er:YAG laser irrigation technology can effectively remove smear layer of root canals.The cleaning effect of passive ultrasonic irrigation and EDDY irrigation is better than that of Needle irrigation technology.

关 键 词：被动超声荡洗 EDDY PIPS-ErYAG激光 玷污层 

分 类 号：R78[医药卫生—口腔医学]