口腔医学研究

口腔医学研究 ›› 2017, Vol. 33 ›› Issue (10): 1036-1039.DOI: 10.13701/j.cnki.kqyxyj.2017.10.004

• 基础研究论著 • 上一篇    下一篇

4种充填方法对椭圆形根管根尖超填及封闭性能的影响

黎景景，陈苏蕾，李俊亮，钱雅洁，高雅凡，杨卫东*   

  1. 南京大学医学院附属口腔医院,南京市口腔医院牙体牙髓科 江苏 南京 210008
  • 收稿日期:2017-05-19 出版日期:2017-10-20 发布日期:2017-10-24
  • 通讯作者: 杨卫东,电话:025-83620213
  • 作者简介:黎景景(1990~ ),男,江西人,医师,硕士,主要从事牙体牙髓病研究工作。
  • 基金资助:
    江苏省重点研发计划(社会发展)项目(编号:BE2016623)南京市医学科技发展项目(编号:YKK15113)南京市科技计划项目(编号:201605043)

Evaluation of Apical Overfilling and Sealing with 4 Different Obturation Techniques in Oval-root Canals In Vitro

LI Jing-jing, CHEN Su-lei, LI Jun-liang, QIAN Ya-jie, GAO Ya-fan, YANG Wei-dong*   

  1. Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, China.
  • Received:2017-05-19 Online:2017-10-20 Published:2017-10-24

PDF (PC)

446

被引次数

4

摘要： 目的:比较4种根管充填方法对椭圆形根管根尖超填及封闭性能的影响。方法:88颗离体椭圆形单根管前牙于颈部截冠,Mtwo镍钛锉预备根管至35#04锥度,取80颗标本随机分为4组,每组20颗,分别进行GuttaFlow常温流动牙胶根管充填(GuttaFlow组),热牙胶连续波根管充填(热牙胶组),冷牙胶侧方加压根管充填(冷侧压组),iRoot SP单尖法根管充填(iRoot SP单尖组),记录根管充填过程中每组每颗牙的根管超填情况,取每组恰填12颗,采用透明牙染色法检测各组根尖微渗漏情况。结果:常温流动牙胶组和iRoot SP单尖组根管超填率较高。染料渗入长度常温流动牙胶组<热牙胶组<冷侧压组<iRoot SP单尖组。常温流动牙胶组与冷侧压组及iRoot SP单尖组间,热牙胶组与冷侧压组及iRoot SP单尖组间均有显著性差异。结论:在椭圆形根管中,GuttaFlow常温流动牙胶根管充填及热牙胶连续波根管充填具有较好的根尖封闭能力,但GuttaFlow常温流动牙胶根管充填超填率较高。

关键词: 根尖封闭性, 超填, 根管充填, 椭圆形根管

Abstract: Objective: To evaluate the apical overfilling and microleakage in oval-root canals, which were obturated with GuttaFlow, continuous wave of vertical condensation, cold lateral condensation, and iRoot SP. Methods: Eighty-eight exacted mandibular premolars with single oval-root canals were prepared with MTwo to the 35#04. Eighty teeth were randomly divided into four groups. Each group had 20 teeth, which was obturated with GuttaFlow, continuous wave of vertical condensation, cold lateral condensation, and iRoot SP respectively. Root canal overfilling in each tooth was recorded. Twelve teeth with good filling were chosen and detected the apical microleakage with transparent tooth staining. Results: The overfilling of the root canals obturated with GuttaFlow and iRoot SP group had higher overfilling rate. Microleakage results showed: GuttaFlow group < continuous warm gutta-percha group <cold lateral condensation group <iRoot SP single pointed group. The microleakage between GuttaFlow group and cold lateral condensation group had significant difference, as well as GuttaFlow group and iRoot SP single point group, warm gutta percha group and cold side group, warm gutta percha group and iRoot SP single point group. Conclusion: GuttaFlow group and continuous warm gutta-percha group have better apical sealing ability in oval-root canals, but GuttaFlow has higher overfilling rate.

Key words: Apical sealing ability , Overfilling, Obturation techniques, Oval-root canals

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