摘要
目的评价根管机械预备过程中,正压冲洗对根管内细菌清除率及术后疼痛并发症的影响,为提高根管治疗的疗效提供新方法。方法选取80例单根慢性根尖周炎患者,根据根管预备过程中是否采用正压冲洗,随机分为2组,两组均采用机用镍钛锉M3冠向下法预备至F2。在预备前后,根管内分别取样进行厌氧菌接种培养,检测根管内厌氧菌数量变化;两组患者术后疼痛进行回访。结果80例患牙器械预备后菌落数均明显下降(P<0.05);使用正压冲洗组的细菌清除率高于不使用正压冲洗组(P<0.05);使用正压冲洗组术后24 h患者疼痛率低于不使用正压冲洗组(P<0.05)。结论镍钛锉进行根管预备时,使用正压冲洗能够有效提高根管内细菌清除率,降低术后疼痛并发症。
Objective To evaluate the effect of positive pressure flushing on the clearance rate of bacterial infection during the root canal preparation using nickel titanium file,as well as pain and complications after operation;to provide a new method for improving the effect of root canal treatment.Methods Eighty cases of single root canal with chronic periapical periodontitis were collected and randomly divided into two groups according to treatment with or without positive pressure flushing during nickel titanium file preparation.The root canals were instrumental with M3 system using crown-down technique.Before and after root canal preparation,samples were taken and cultured under anaerobic condition for 48 h to compare the changes of colony number.The pain rates after operation were recorded.Results Compared to the unprepared root canal,the number of bacterial colonies was significantly decreased after root canal preparation(P<0.05).The clearance rate of bacterial infection was significantly increased and the 24 h pain rate was statistically decreased in the group with positive pressure flushing compared to the group without it(P<0.05).Conclusion Root canal preparation with positive pressure flushing can reduce the bacterial infection in the root canal as well as the pain after operation.
作者
刘晓燕
张轶丹
李芬
吕海鹏
蒋文凯
LIU Xiaoyan;ZHANG Yidan;LI Fen;LYU Haipeng;JIANG Wenkai(State Key Laboratory of Military Stomatology&National Clinical Research Center for Oral Diseases&Shaanxi Key Laboratory of Stomatology,Department of Operative Dentistry&Endodontics,School of Stomatology,Fourth Military Medical University,Xi'an 710032,China)
出处
《口腔医学》
CAS
2020年第10期900-903,共4页
Stomatology
基金
国家自然科学基金(81700951,81803186)
创新人才推进计划-青年科技新星项目(2019KJXX-086)。
关键词
四手操作
正压冲洗
根管预备
镍钛锉
four-handed operation
positive pressure flushing
root canal preparation
nickel titanium file
