A Retrospective Study of Endodontic Treatment Outcome between Nickel-Titanium Rotary and Stainless Steel Hand Filing Techniques
A Retrospective Study of Endodontic Treatment Outcome between Nickel-Titanium Rotary and Stainless Steel Hand Filing Techniques
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DOI：
10.1016/j.joen.2009.04.016
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发表时间：
2009-07-01
影响因子：
4.2
通讯作者：
Liu, Christopher S. Y.
中科院分区：
文献类型：
--
作者：
Cheung, Gary S. P.;Liu, Christopher S. Y.
目的：本研究的目的是比较两种器械治疗磨牙根管的根尖周愈合情况。方法：从医院计算机数据库中随机抽取本科或研究生治疗的上颌第一和第二恒磨牙225颗，其中110颗采用镍钛器械混合旋转技术（NR组），115颗采用手工不锈钢锉（HF组）。患者被召回，并检查牙齿的临床和放射学的迹象，根尖周围的炎症。结果：NR组和HF组分别有19%和39%的牙齿被判定有某种形式的程序错误。NR组根尖周愈合率（77%）高于HF组（60%）（p < 0.05）。对治疗结果有利的因素包括使用旋转技术、上颌磨牙、经验丰富的操作人员和术前无放射性病变。结论：不锈钢锉预备牙在连续扩孔治疗中，与使用镍钛器械相比，其操作失误发生率较高，成功率较低。（J end 2009;35:938-943）
Aim: The purpose of this study was to compare the periapical healing of molar root canal treatment using two instrumentation techniques. Methods: A total of 225 maxillary and mandibular first and second permanent molars endodontically treated by undergraduate or postgraduate students were randomly selected from a computerized hospital database of which 110 molars had been prepared using a hybrid rotary technique with nickel-titanium instruments (group NR) and 115 with hand stainless steel files (group HF). Patients were recalled and the teeth were examined both clinically and radiographically for signs of periapical inflammation. Results: Some 19% and 39% of teeth in the NR and HF group, respectively, were judged to have some form of procedural errors. A higher rate of periapical healing was noted for NR (77%) than the HF group (60%) (p < 0.05). Factors contributing favorably to treatment outcome included the use of rotary technique, maxillary molar, experienced operator, and absence of preoperative radiolucent lesion. Conclusion: There was a higher incidence of procedural errors and a lower success rate for primary root canal treatment of teeth prepared with stainless steel files compared with the use of NiTi instruments in a continuous reaming action. (J Endod 2009;35:938-943)