口腔医学研究

口腔医学研究 ›› 2021, Vol. 37 ›› Issue (8): 717-721.DOI: 10.13701/j.cnki.kqyxyj.2021.08.010

• 牙体牙髓病学研究 • 上一篇    下一篇

新型机用镍钛锉去除不同弯曲度的椭圆形根管充填物的效果研究

王静*, 范丽瑶, 王涛, 李蕴蕴, 孙亚丽, 林华洁   

  1. 郑州大学第一附属医院口腔科 河南 郑州 450000
  • 发布日期:2021-08-11
  • 通讯作者: 王静,E-mail:532315815@qq.com
  • 作者简介:王静(1978~ ),女,河南郑州人,副主任医师,硕士,主要从事口腔内科临床治疗工作。
  • 基金资助:
    河南省医学科技攻关计划省部共建项目(编号:SB201903006)

Efficiency of New Nickel-titanium Instruments in Removing Filling Materials from Oval-shaped and Differently Curved Root Canals

WANG Jing*, FAN Liyao, WANG Tao, LI Yunyun, SUN Yali, LIN Huajie   

  1. Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
  • Published:2021-08-11

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摘要： 目的: 评价新型机用镍钛锉Waveone Gold和Reciproc Blue在不同弯曲度的椭圆形根管中去除根充物的效果。方法: 选取150颗单根管离体前磨牙,根据弯曲度分为3组:直根管组、中度弯曲组、重度弯曲组,每组各50颗牙。完善根管预备和充填后,各组再随机分为5组(n=10):手用H锉组、Protaper Universal Retreatment锉组、Mtwo R锉组、Waveone Gold锉组、Reciproc Blue锉组,分别去除根充物,记录时间及并发症,计算根管侧壁残留量。结果: 不同弯曲度的椭圆形根管,H锉组所用操作时间及根管总体残留量明显高于其他机用锉组,差异有统计学意义(P＜0.05),各机用锉组间比较差异无统计学意义。中度弯曲组Mtwo R锉组发生器械分离1例,重度弯曲组中Mtwo R组发生器械分离2例。结论: Reciproc Blue锉和Waveone Gold锉均能有效清除根管充填物,且在弯曲椭圆形根管中表现出较好的安全性。

关键词: 根管再治疗, 根充物去除, Reciproc Blue, Waveone Gold

Abstract: Objective: To evaluate the efficiency of Waveone Gold and Reciproc Blue in removing filling materials from oval-shaped and differently curved root canals. Methods: 150 extracted human premolars with single root canal were divided into three groups according to their curvature, i.e straight canal group, moderate bending group, and severe bending group. There were 50 teeth in each group. After the completion of canal preparation and filling, each group was randomly divided into five subgroups (n=10), respectively. H file, ProTaper Universal Retreatment, Mtwo R, Waveone Gold, and Reciproc Blue were used to remove the root canal filling materials. Time and complication were recorded and the residual materials in the root canal wall were evaluated. Results: The operation time of H file was significantly longer than other groups and the whole residual amount of H was also significantly more than other groups (P＜0.05). There was no statistical difference among other machine file groups. There was 1 case of Mtwo R file separation in moderate bending group and 2 cases of Mtwo R files in severe bending group. Conclusion: Recioproc Blue and Waveone Gold could effectively remove filling materials, which showed better safety in curved oval root canals.

Key words: root canal retreatment, removal of filling materials, Reciproc Blue, Waveone Gold