ProTaper Universal机括镍钛锉与手用不锈钢锉：根管预备的安全性比较

摘要

BACKGROUND:The high number of tooth roots, complex root canal morphology, and bending and narrow trend require higher physical and mechanical properties for root canal preparation instruments. OBJECTIVE:To evaluate the clinical efficacy of ProTaper Universal nickel titanium rotary file versus stainless-steel hand file for root canal preparation. METHODS: A total of 100 patients with acute pulpitis teeth were randomly divided into experimental and control groups. In the experimental group, ProTaper Universal nickel titanium rotary file was used for root canal preparation, while in the control group, stainless-steel K-file (hand use) was used. Root canal preparation time, root canal curvature before and after root canal preparation and root canal filing quality were compared between the two groups. RESULTS AND CONCLUSION: After root canal therapy, clinical symptoms were both improved in the two groups. Compared with the control group, in the experimental group, the root canal preparation time was significantly shorter (P < 0.05) and the root canal curvature varied more significantly (P < 0.05). In addition, the root canal filing quality was also superior in the experimental group to the control group. Therefore, ProTaper Universal nickel titanium rotary file is superior to conventional nickel-titanium endodontic file (hand use), which is easy to operate, saves both time and effort, and has good moldability, good security, high efficiency and excelent filing results.%背景：磨牙的牙根数量多，根管形态复杂、走向弯曲狭窄，对根管预备器械物理机械性能要求较高。目的：评价ProTaper Universal机括镍钛锉与手用不锈钢锉用于根管预备的临床效果。方法：选择100例下颌第一磨牙急性牙髓炎患者，按照随机配对原则分为实验组和对照组。实验组采用ProTaper Universal机括镍钛根管锉进行根管预备，对照组采用手持K型不锈钢锉进行根管预备，比较两组根管治疗后的根管预备时间、根管预备前后弯曲度和根管充填质量。结果与结论：根管治疗后两组患牙根管的临床症状均得到了明显控制和改善。实验组根管预备时间明显短于对照组(P <0.05)；两组根管预备后的弯曲度均低于根管预备前(P <0.05)，并且实验组预备的根管弯曲度变化更大；实验组根管充填质量优于对照组(P <0.05)。结果表明在磨牙根管治疗中使用ProTaper Universal机括镍钛根管锉，操作更加简便、省时省力，具有根管成型性好、安全性好、工作效率高、根充效果好等特点。