口腔医学研究

口腔医学研究 ›› 2018, Vol. 34 ›› Issue (2): 121-124.DOI: 10.13701/j.cnki.kqyxyj.2018.02.004

• 龋病学研究 • 上一篇    下一篇

机用镍钛通畅锉在模拟根管中成形能力的对比研究

韩怡1, 白雨豪2, 侯晓玫1*   

  1. 1. 北京大学口腔医院第二门诊部 北京 100101;
    2. 首都医科大学宣武医院口腔科 北京 100053;
  • 收稿日期:2017-09-29 出版日期:2018-02-28 发布日期:2018-02-26
  • 通讯作者: 侯晓玫,电话:010-82196307
  • 作者简介:韩怡(1978~ ),女,大连市人,硕士,主治医师,研究方向为镍钛锉的成形能力。
  • 基金资助:
    北京大学口腔医院临床新技术新疗法项目(编号:PKUSSNCT-17B12)

Glide Path Management of Rotary Nickel-titanium Instruments in Simulated Root Canals

HAN Yi1, BAI Yu-hao2, HOU Xiao-mei1*   

  1. 1. The Second Dental Center, School of Stomatology, Peking University. Beijing 100101, China;
    2. Department of Stomatology, Xuanwu Hospital, Capital Medical University. Beijing 100053, China.
  • Received:2017-09-29 Online:2018-02-28 Published:2018-02-26

PDF (PC)

289

被引次数

1

摘要： 目的:比较Scout RaCe、Hyflex GPF、S3 Superpass、PathFile和手动不锈钢K锉在树脂模拟根管制备通畅通道的成形能力。方法:40个模拟根管,随机分为5组(n=8),分别制备通畅通道,记录制备时间;使用 Photoshop和 ImageJ测量制备前后根管的重叠图像,从根尖止点开始,每隔1 mm测量内外侧壁树脂去除量,计算中心定位能力。结果:Scout RaCe和S3 Superpass制备时间最短。内侧壁弯曲段和外侧壁根尖段,均为Scout RaCe切削量最小,Hyflex GPF稍多,S3 Superpass显著大于前两者。中心定位能力,Scout RaCe和Hyflex GPF最小,S3 Superpass稍大。结论:Scout RaCe和Hyflex GPF在弯曲根管中的切削量最少,中心定位能力最优。S3 Superpass切削量稍大,中心定位能力与PathFile相当。

关键词: 通畅通道, 成形能力, 模拟根管, 镍钛锉, CM-丝

Abstract: Objective: To compare the shaping ability of Scout RaCe, Hyflex GPF,S3 Superpass,PathFile and stainless steel K-file in simulated root canals. Methods: A total of 40 resin blocks were divided randomly into five groups (n=8), each of which was prepared with the corresponding instrument. Preparation time was recorded. Pre- and postoperative images were superimposed. And the material removal from the inner and outer canal walls was measured from the apexusing ImageJ to determine the centering ability. The data were analyzed using the One-way ANOVA at a significance level of P<0.05. Results: Preparation time for Scout RaCe and S3 Superpass was the shortest. For resin removal from the inner wall at the curvature portion and from the outer wall at the apical portion, Scout RaCeand Hyflex GPF exhibited much less cutting quantity than S3 Superpassdid.Moreover, Scout RaCe and Hyflex GPF demonstrated superior centering ability than S3 Superpasss. Conclusion: Scout RaCe and Hyflex GPF showed the least root canal removal and the best centering ability. S3 Superpass created more removal and its centering ability was comparable to PathFile.

Key words: Glide path, Shaping ability, Simulated root canals, Nickel-titanium instruments, CM-wire

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