镍钛手用根管锉ProTaper用于磨牙弯曲根管治疗的临床与影像学评价

Clinical Evaluation of ProTaper File in Managemen of Molar Curved Root Canals

目的:观察手用ProTaper锉预备磨牙弯曲根管的疗效。材料与方法:选取有弯曲根管的牙髓炎和根尖周炎的82颗磨牙随机分为P组41颗和S组41颗,P组用手用ProTaper锉冠向下逐步深入法预备根管,S组用不锈钢K锉逐步后退法予备根管,两组均用侧向加压充填法,根管治疗前中后的X线片评价两组在根管预备的效果。结果:P组无根管偏移,根尖阻塞,台阶形成等并发症形成,能维持根管的弯曲度,根管成形效果,充填效果好。结论:手用ProTaper锉架起了机用冠向下预备法与手用逐步后退法的桥梁,根管成形及根充效果好,临床应用价值高。

Purpose： To evaluate clinical effect of ProTaper file in preparation of molar curved root canals. Materials and Methods： 82 teeth with curved root canals were randomly divided into 2 groups of 41 specimens each. One group was instrumented by ProTaper file using crown-down teclmique, the control group was instrumented using step- back technique. All teeth were obturated with lateral condensationmethod. The efficiency of preparation and obstruation was analyzed with radiographs before, during and after operation. Results： No transporation apocai, blockage and ledge were found in ProTaper file Preparation. The technique cluld keep the curvature and flow of curved canals. Conclusion： The ProTaper file has good shaping and obturation ability in preparing curve root canals. And were provecd to be efficient in preparing molar curved root.