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目的 探讨机用镍钛锉根管预备一次性根管充填治疗恒前牙外伤性冠折的疗效。方法 选择因外伤致冠折的120例患者的200颗牙齿为研究对象。65例患者的100颗冠折牙为实验组,采用ProTaper机用镍钛锉根管预备,进行一次性根管充填;55例患者的100颗冠折牙为对照组采用ISO标准手用不锈钢K型锉进行常规根管治疗。分别记录2组根管预备所需时间,所有患牙分别均在充填治疗后1周和6个月复查,根据疗效评价标准,评价治疗效果。结果 实验组根管预备时间明显短于对照组,差异有统计学意义(P<0.05);2组1周内的临床反应无显著差异(P>0.05);实验组100颗牙齿99颗治疗成功,其治疗成功率为99%;对照组100颗牙齿中98颗治疗成功,其治疗成功率为98%,2组患牙治愈率的差异无统计学意义(P>0.05)。结论 ProTaper机用镍钛锉根管预备一次性根管治疗外伤性恒前牙冠折,省时省力,临床疗效良好。
Objective To investigate the curative effect of mechanical nickel-titanium file root canal preparation of disposable root canal filling in treatment of traumatic crown defect of permanent anterior teeth. Methods A total of 200 teeth from 120 patients with coronary artery lesions were chosen as the study subjects. One hundred cases of crown fractures of 65 patients were used as experimental group, and one-time root canal filling was performed with ProTaper NiTi machine. 100 crowned teeth of 55 patients were used as control group with ISO standard stainless steel K Type file for conventional root canal therapy. Two groups of root canal preparation were recorded the time required, all teeth were filled in 1 and 6 months after the review, according to the evaluation criteria for evaluation of treatment. Results The root canal preparation time in the experimental group was significantly shorter than that in the control group (P <0.05). There was no significant difference in the clinical response between the two groups within one week (P> 0.05). 99 teeth of 100 teeth in the experimental group were successfully treated , And the success rate was 99%. In the control group, 98 of the 100 teeth were successfully treated, and the success rate was 98%. There was no significant difference in the cure rate between the two groups (P> 0.05). Conclusions ProTaper machine nickel-titanium file root canal preparation of disposable root canal treatment of traumatic anterior crown fracture, saving time and labor, clinical efficacy is good.