【摘要】 【目的】采用镍钛合金机用锉与超声波、手用根管锉对弯曲、细小或堵塞根管进行根管预备 ,分析其临床应用效果 ,评价 3种根管锉在根管治疗中的作用。【方法】选择 12 6例 148颗根管弯曲、细小或堵塞的患牙 ;用 3种不同的根管锉进行根管预备 ,观察临床疗效。【结果】镍钛合金根管锉 (A组 )与超声波根管锉 (B组 )差异显著 (P <0 0 5 ) ;镍钛合金根管锉 (A组 )、超声波根管锉 (B组 )与手用根管锉 (C组 )差异显著 (P <0 0 0 1)。【结论】镍钛合金机用锉柔韧性好、成功率高、价格低廉、值得临床推广和应用更多还原

【Abstract】 To evaluate the function of nickel titanium power driven file, ultrasonic canal file and handle driven file in bending, narrow and obstructed root canal preparation. 148 root canal system in 126 patients were prepared with three different driven files and the clinic effects were observed. Significant differences were found between the nickel titanium power driven file (group A) and the ultrasonic file (group B), P<0 05. There were also significant differences among nickel titanium power driven file (group A), ultrasonic file (group B) and handle driven file (Group C), P<0 001. [Conclusion] The study suggests that nickel titanium power driven files has better flexibility, lower price and better effect and be worthg of widely applicating in clinical practice.更多还原