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Operable length of root canal 根管工作长度
Three anatomic risk factors: root curvature, calcification and working length of root canal therapy were assessed by difficulty assessment standards and criterions. 采用根管治疗难度系数评估标准，进行根管治疗难度评估；
Analysis of the handing method and the electric method for measuring work length of root canals. 手感法和电测法确定根管工作长度的研究。
Accuracy of three methods of determining the working length of root canal 三种测量根管工作长度方法准确性的评价研究
L-1, the best length of root tips was 1.2 mm. L-1;切取的最佳根尖长度为1.;2 mm。
Effects of apical transportation on seal of root canal fillings. 根管偏移对充填材料封闭根管能力的影响。
Root ZX was used to measure root canal length before and after preparation. Accuraly of root canal filling was evaluated with X-ray examination in the 2 years follow up. 均用ProTaper进行根管预备,Root ZX测量预备前后根管工作长度,根管充填术后摄X线片评价准确性,随访2年。
Analysis of the two methods for measuring work length of root canals 两种方法测量根管工作长度的比较研究
Abstract : Objective To evaluate the quality of root canal obturation and the effect factor on accuracy of electronic apex locator for determining root canal working length. 摘要：目的评价电子根尖定位仪测量根管工作长度进行根管充填的质量。
Objective To observe the curat ive effects of root canal therapy with two kinds of materias i.e cortisomol and ZOE. 目的观察Cortisomol根管糊剂根充术后反应并与临床最常用的氧化锌丁香油酚糊剂 (ZOE)相比较。
Objective: To summarize cases of root canal therapy of residual root which can be restored by fixed restorations later. 目的:总结高龄老年人可保留进行固定修复的残根的根管治疗。
Effective and predictable instrumentation of root canal systems is essential for ideal final treatment results. 因此，有效并可预见的根管预备对最终获得理想的治疗结果非常关键。
Conclusion: Antibiotics should not be the main part of root canal filling paste. 结论:抗生素不适合作为根充糊剂的主要成分。
This river is ten times the length of that River. 这条河的长度是那条河的十倍。
She paced out the length of the room. 她用步子测量了房间的长度。
Seventy percent of broken endodontic instruments occurred in apical two-third part of root canal. 器械折断在根管中下段多见，占70%25。
He fished a length of string out of his pocket. 他从口袋里掏出一条绳子。
You spend a ridiculous length of time in the bath. 你洗澡用那麽长时间，真不像话。
Objective To evaluate the clinical quality of root canal therapy (RCT) in West China Dental Hospital of Sichuan University. 目的评价四川大学华西口腔医院近年来根管治疗(RCT)的临床质量。
Promotion will go by length of service. 晋升以服务年限为准。