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.
作者
张含
王素苹
任颖超
孔祥红
王丹丹
肖燕
ZHANG Han;WANG Suping;REN Yingchao;KONG Xianghong;WANG Dandan;XIAO Yan(Department of Stomatology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China)
出处
《口腔医学研究》
CAS
CSCD
北大核心
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)。
