镍钛合金机用锉根管预备。
Root canal preparation with nickel titanium alloy engine file.
手用不锈钢锉根管预备。
逐步后退法；弯曲根管；根管预备；根管充填。
Step-back technique; Curving root canal; root canal preparation; root canal condensation.
对根管预备后出现根尖炎反应的原因进行分析。
Objective To analyze causes of periapical inflammation after root canal preparation.
目的：定量研究弯曲根管预备过程中根管的偏移。
AIM: To evaluate root canal deviation during instrumentation of curved root canals.
目的探讨根管预备后残留细菌对根管治疗预后的影响。
Objective To study the effect of the left bacteria on the root canal therapy.
试尖是检查根管预备效果及保障根管充填质量的较好方法。
The quality of obturation was analyzed based on with and without testing the trial point.
目的评价根管超声冲洗对根管预备术后反应及根充后侧支根管充填率的影响。
Ultrasonic irrigation and syringe irrigation were applied respectively in each group during the root canal preparation.
目的：比较手用不锈钢锉，镍钛合金机用锉和超声根管锉在根管预备后的临床效果。
Objective: To compare the clinical effects after root canal preparation with hand use stainless steel file, nickel titanium alloy engine file and root canal ultrasonic file.
纤维桩：依照厂商说明使用预成钻和完成钻进行根管预备。金属桩：对桩的表面喷砂。
FIBER post: Prepare the root canal with the Pre-Shaping and Finishing drills, according to manufacturer's instructions. METAL post: Sandblast the surface of the post.
数字化牙片可迅速、准确地了解根管预备、根管长度及根管充填情况，优于传统牙片。
Digital periapical film can quick understand the root canal preparation, root canal length and root canal filling accurately, surpassing conventional periapical film.
结论：根管预备后锥度在0.08以内对牙根的整体抗压性能和抗疲劳性能无明显影响。
Conclusion: There is no effect on the whole compressive strength and resistance to cyclic fatigue of tooth root after prepared within 0.08 taper.
摘要【摘要】目的探讨几种根管预备方法和充填技术组合对根尖微渗漏和牙根抗折强度的影响。
Abstract: Objective: to explore the influence on micro leakage from root tip and tooth root's bending strength by different combinations of root canal preparation and filling technology.
结果：乳牙根管预备后疼痛的发生率为7.83%，根充后疼痛的发生率为10 . 4 3%。
RESULTS: The incidence of pain after root canal preparation and fillings was 7.83% and 10.43% respectively.
目的研究两种临床常用的根管预备器械不锈钢锉和镍钛锉预备根管对充填后根管根尖孔封闭性的影响。
Objective To evaluate the apical sealing ability of obturated root canals prepared hand ProTaper with stainless steel K files in simulated resin root canals.
实验组102颗牙180个根管，用根管长度测量仪测量其工作长度，进行根管预备和充填，术后拍片；
The experiment group for 102 cases with 180 roots, applying root length surveyor test its working length, undertake root preparing and filling up, took X ray after operation;
在根管口段，两组间无显著性差异（P>0.05）。 两组间根管预备时间无统计学差异（P>0.05）。
There was no significant difference between the two groups at the coronal level (P>0.05) as well as preparation time (P>0.05).
根管消毒的目的是：进一步控制或消灭根管预备后残留在根管内的细菌、止痛、控制渗出、诱导根尖发育完成等。
The function of root canal disinfection is to control or kill the remaining bacteria in the root canal, relieve pain, control exudation and induce apical part of a root to complete development.
目的：评价HERO 642镍钛锉预备磨牙弯曲根管的临床疗效。
Objective: To evaluate the effect of HERO642 nickel-Titanium files in preparation of curved root canals.
目的：评价用平衡力法预备弯曲根管的临床疗效。
AIM: To evaluate the clinical effect of balanced force technique in preparation of curved root canals.
不锈钢K锉组（SS）采用常规手用不锈钢K锉、逐步后退法预备根管。
The third group were prepared using the stainless steel hand K-files with the step-down technique(SS group).
目的探索预备下颌第二磨牙C形根管的有效方法。
Objective To explore the effective method for C-shaped root canal preparation.
目的比较预备与不预备的根管以及预备后充填与不充填的根管抗折力。
Objective To compare the resistance to fracture of the root canals after instrumentation or not.
结论短期内冠根向预备技术比逐步后退技术成形的根管更有利于根管充填后根尖孔的密封。
Conclusion it is better apical sealing ability in root canals prepared by crown-down technique than step-back technique.
方法：25颗离体直根管前牙，随机分为5组，不锈钢K锉常规法预备根管，应用5种冲洗剂组合进行冲洗。
METHODS: 25 extracted human maxillary anterior teeth, with a single straight root were randomly divided into 5 groups. They were instrumented with K-files and conventional preparation technique.
分别预备到主尖锉30号和40号，对各组器械预备前后的根管弯曲度和预备时间进行测量。
Root canal preparation was carried out at two stages: first to size 30, then to size 40. The root canal curvatures before and after preparation as well as preparation time were measured.
在清理和成形过程中弯曲根管比直根管易于产生各种并发症。本研究用不同的根管器械和预备技术预备弯曲根管。
The incidence of canal complication is higher in curved root canal than in straight one during the instrumentation.
在清理和成形过程中弯曲根管比直根管易于产生各种并发症。本研究用不同的根管器械和预备技术预备弯曲根管。
The incidence of canal complication is higher in curved root canal than in straight one during the instrumentation.
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