Protaper手用镍钛根管锉预备根管的效果分析

目的 评价Protaper手用镍钛根管锉预备磨牙根管的临床疗效.方法 选患牙髓炎和根尖周炎的恒磨牙252颗,用Protaper手用镍钛根管锉预备根管,侧压法根管充填.记录根管预备时间及器械折断数量.根据治疗前、中、后X线片评价根管预备和充填的效果.结果 Protaper手用镍钛根管锉预备磨牙根管时间短,平均单根管预备时间3.55min,效果好,锥度、流畅度好,术后疼痛少、程度轻,减小根管弯曲度,降低根管预备难度.器械折断9支.结论Protaper手用镍钛根管锉预备根管成形、根充效果好,降低预备时间,提高效率,可明显减小根管弯曲度,降低根管预备难度,但大号完成锉的使用需谨慎.在取根管内充填材料方面有独特的优点.

Clinical evaluation of Protaper file in root canal preparation

Objective To assess the clinical value of the Protaper file in root canal preparation. Methods A total of 252 molars and premolars were instrumented by Protaper file using crown-down technique. All teeth were obturated with lateral condensation method. The efficiency of preparation and obturation was analyzed by radiographs before, during and after treatment. The canal curvature and operation time were recorded and compared, and the incidence of complications , pest-treatment pain and instrument fracture were reenrdered. Results No transportation, apical blockage, ledge or perforation was found in all teeth. The Protaper could decrease the original curvature , difficulty of root canal preparation and keep flow of the root canals. The operating time was shorter and pest treatment pain seldom occurred. The time for single root canal preparation was 3.55 minutes. Nine instruments fractured. Conclusion The Protaper can be used for preparation of root canals effectively and safely,which has good shaping and obturating ability, but care should be taken when using the finishing file F2 and F3.