三种器械用于磨牙弯曲根管预备的临床评价

A Clinical study of three instruments in preparation of curved root canals

目的:评价不锈钢K锉、机用ProTaper和机用Safe Sider预备磨牙弯曲根管的临床疗效。方法:选取因牙髓炎或根尖周炎需要进行根管治疗的磨牙180颗(413个根管),随机分为K-file组、ProTaper组和Safe Sider组,每组60颗牙。分别用不锈钢K锉、机用ProTaper和机用Safe Sider进行根管预备。三组均采用冷牙胶侧方加压技术充填根管。记录三组病例根管预备时间和术后并发症发生情况,根据治疗前、中、后的X线片评价根管预备和充填效果。结果:机用ProTaper、机用Safe Sider分别与不锈钢K锉在根管预备时间、根管成形以及充填效果方面在统计学上有显著性差异(P﹤0.05),机用ProTaper与机用Safe Sider在上述方面无显著性差异(P﹥0.05)。结论:机用ProTaper和机用Safe Sider预备磨牙弯曲根管时能较好地保持原有根管形态,省时省力,术后反应少。

Objective：To evaluate the clinical effect of K-file、ProTaper and SafeSider in preparation of curved molar root canals.Method：A total of 180 teeth which needed endodontic treatment were selected and randomly divided into 3 groups with 60 teeth in each group：K-file group、ProTaper group and SafeSider group.The root canals were prepared with 3 instruments respectively.All canals were obturated using lateral condensation technique.The efficacy of canal preparation and obturation by X-ray before,during and after operation was analyzed.Result：Statistically significant difference was found in mean working time,shaping curved molar canals and exact root canal obturation between K-file group、ProTaper group or SafeSider group.No Statistically significant difference was found in mean working time,shaping curved molar canals and exact root canal obturation between ProTaper group and SafeSider group.Conclusion：ProTaper and SafeSider tested in this study are effective and time-saving in shaping curved molar canals,it also caused less post-operative pain.The results indicated both ProTaper and SafeSider were comparable to optimally enlarge root canal.