根管治疗中75例器械折断的临床分析  

Clinical analysis of 75 cases fractured endodontic instruments in root canal treatment.

作　　者：夏宁[1] 赵心臣[1] 高小燕[1] 

机构地区：[1]湖北医科大学口腔医学院

出　　处：《口腔医学纵横》1999年第2期103-105,共3页Journal of Comprehensive Stomatology

摘　　要：目的：分析器械折断的原因，提出处理方法和预防措施。方法：对根管治疗中器械折断的病例进行归纳、总结、分析。结果：器械折断的发生率为２．６１％。断械以扩孔钻、根管锉和电动扩孔钻为主，占９０．７％。器械折断于上磨牙近颊根管和下磨牙近中根管者居多，占７０．７％。器械折断在根管中下段多见，占７０％。结论：发生断械的患牙经过适当处理，大多数因无临床症状而得以保存。objective:To analyse causes of endodontic instruments breaking, to put forward methods of dealing with and preventive measures. Methods:To sum up and to analyze the clinical data of broken endodontic instruments. Results:The incidence of broken endodontic instruments was 2.61%. The broken instruments were mostly reamer, file and power assisted reamer, making up 90.7%. Most of which happened in mesiobuccal canal of maxillary molar and mesial canal of mandibular molar, accounting for 70.7%. Seventy percent of broken endodontic instruments occurred in apical two third part of root canal. Conclusions:Tooth with broken instruments were no clinical symptom after proper dealing, and most of them were kept.

关 键 词：根管疗法 器械折断 临床分析 

分 类 号：R781.05[医药卫生—口腔医学]