口腔医学研究

口腔医学研究 ›› 2017, Vol. 33 ›› Issue (4): 444-448.DOI: 10.13701/j.cnki.kqyxyj.2017.04.024

• 临床研究论著 • 上一篇    下一篇

ProTaper Next和M3在模拟弯曲根管内成形效果的实验研究

王天*, 李桂红   

  1. 天津市口腔医院,南开大学口腔医院牙体牙髓病一科 天津 300041
  • 收稿日期:2016-09-05 出版日期:2017-04-20 发布日期:2017-04-24
  • 通讯作者: 王天,E-mail:dentistwangtian@126.com
  • 作者简介:王天(1980~ ),女,黑龙江鹤岗人,副主任医师,硕士,主要从事牙体牙髓病学研究。

Comparison of Shaping Ability of ProTaper Next and M3 in Simulated Curved Root Canals.

WANG Tian*, LI Gui-hong.   

  1. Department of Conservative Dentistry & Endodontics, Affiliated Stomatological Hospital of Nankai University, Stomatological Hospital of Tianjin, Tianjin 300041, China.
  • Received:2016-09-05 Online:2017-04-20 Published:2017-04-24

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被引次数

1

摘要： 目的:利用树脂模拟根管比较ProTaper Universal、ProTaper Next与M3预备模拟根管的成形效果。方法:选取透明树脂模拟根管30个,随机分为3组,PU组、PN组和M3组,每组各10个。分别用ProTaper Universal、ProTaper Next和M3进行根管预备,记录根管预备时间、预备前后的形态图像。使用图像处理、分析软件测量各观测点树脂切割量,计算根管偏移程度以及根尖孔碎屑溢出量。结果:ProTaper Next、M3较ProTaper Universal根管预备时间短,在多个测量点的根管偏移程度小于ProTaper Universal,差异显著,有统计学意义(P<0.05),ProTaper Next根尖孔碎屑溢出量少于ProTaper Universal、M3。结论:ProTaper Next和M3预备弯曲根管时能较好地保持原有根管形态,省时省力,值得推广。

Abstract: Objective: To compare the shaping ability of ProTaper Next and M3 in simulated curved root canals. Methods: A total of 30 simulated root canals were selected and randomly divided into 3 groups (n=10): the PU group, the PN group and the M3 group. The simulated root canals were prepared with 3 instruments, respectively. The efficacy of the shaping ability of canal preparation was analyzed. The pre-instrumentation and post-instrumentation images were recorded and the assessment of the canal shape was completed with Photoshop CS6 and Image Pro Plus6.0. The apical transportation indices and the amounts of apically extruded debris were recorded. Results: Statistically significant difference was found in mean working time and transportation of the simulated root canals at the most levels between PU group, PN group and M3 group. No Statistically significant difference was found in mean working time and transportation of the simulated root canals at the most levels between PN group and M3 group. The amounts of apically extruded debris by PU group and M3 group were more than PN group with significantly differences. Conclusion: ProTaper Next and M3 tested in this study were effective and time-saving in shaping simulated root canals. The results indicated both ProTaper Next and M3 were comparable to optimally enlarge root canal.

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