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目的比较Protaper超声机用镍钛锉、手用镍钛锉和标准不锈钢K锉在根管预备中的应用并进行临床效果观察分析。方法将门诊60岁以上老年人159例患者的180颗牙随机分为3组,每组60颗牙,使用Protaper机用镍钛锉、Protaper手用镍钛锉、标准不锈钢K锉分别行根管预备。结果 Protaper机用镍钛锉预备后的根管形态好,使用安全,能较彻底的排除根管内的牙本质碎屑和沾污层,减少根管治疗术后急性反应的发生;与其他两组之间存在着显著性差异。经卡方检验,P﹤0.05,三者之间差异具有统计学意义。结论 Protaper机用镍钛锉根管预备过程中省时、省力、并发症小,推出根尖孔外的物质均少于手用锉。根管治疗成功率高。
Objective To compare Protaper ultrasound machine with nickel titanium file, hand nickel-titanium file and standard stainless steel K-file in the preparation of root canal clinical observation and analysis. Methods One hundred and eighty teeth from 159 outpatients aged 60 years and older were randomly divided into 3 groups with 60 teeth in each group. Protaper-use NiTi files, Protaper NiTi files, and standard stainless steel K-files were used respectively. preparation. Results Protaper nickel-titanium file prepared after the preparation of the root canal shape is good, safe to use, can more completely rule out dentin debris and staining within the root canal, reducing the incidence of acute postoperative root canal therapy; with the other two There are significant differences between groups. The chi-square test, P <0.05, the difference between the three statistically significant. Conclusion Protaper machine nickel-titanium file root canal preparation time saving, labor-saving, complications are small, the introduction of the material outside the apical foramen are less than the hand file. Root canal treatment success rate.