机用镍钛锉K3和ProTaper预备磨牙根管的临床应用比较

摘要

Objective To compare the clinical efficacy of machine-used rotary nickel-titanium files K3,ProTaper and hand-used stainless steel files K in molar root canal preparation. Methods 136 patients which received root canal treatment in the hospital from September 2013 to August 2015 were enrolled. And 150 molars in the 136 patients were randomized into experi-mental K3 group (50 molars,168 root canals),experimental ProTaper group (50 molars,165 root canals) and control stainless steel K group (50 molars,160 root canals). Patients in the three groups received root canal preparation using rotary nickel-titani-um files K3,root canal files ProTaper and stainless steel files K respectively. Lateral condensation was used during root canal fill-ing process in three groups. X-ray was used to evaluate the effect of root canal preparation and filling. Preparation time of every single root canal,instrument fracture,postoperative adverse events and long-term effect were recorded. Results Compared with the stainless steel files,using nickel-titanium files K3 and ProTaper for root canal preparation had shorter preparation time,lower inci-dence rate of postoperative pain,better root canal filling and 6-month clinical efficacy. There was no instrument fracture in the K3 group during root canal preparation,while 1 pair of files broke respectively in the ProTaper group and stainless steel K group. Con-clusion Nickel-titanium files K3 and ProTaper could be used for fast and efficient root canal preparation with better root canal filling,less postoperative pain. Nickel-titanium files K3 and ProTaperwere more suitable for molar root canal preparation.%目的：比较机用镍钛锉K3、ProTaper和手用不锈钢K挫对磨牙根管预备临床应用效果。方法将2013年9月至2015年8月期间在我院口腔科就诊的患者需要行根管治疗的磨牙的患者136例,共150颗磨牙,随机分实验组K3组(50颗,168个根管)、ProTaper组(50颗,165个根管)及对照组不锈钢K组(50颗,160个根管)。对照组用不锈钢K型锉预备根管,实验组K3组用机用镍钛锉 K3锉预备根管,ProTape组用ProTaper 根管锉预备根管。充填根管过程三组患者均采用侧方加压法。根据 X 线片评价根管预备和充填效果,且记录每颗患牙的单个根管预备所用时间、器械折断情况、术后不良反应及远期疗效。结果与对照组相比,机用镍钛锉 K3和ProTaper 预备根管所耗时间短,根管预备后疼痛发生率低,根管适充高,根管治疗术后6个月疗效好, K3组无器械折断, ProTaper组及不锈钢 K组各有1例器械折断。结论使用机用镍钛锉 K3和ProTaper进行恒磨牙根管预备快速、高效,根充效果好,术后疼痛少反应,更适用于磨牙的根管预备。