口腔疾病防治 ›› 2018, Vol. 26 ›› Issue (1): 26–30.doi: 10.12016/j.issn.2096-1456.2018.01.005

• 基础研究 • 上一篇    下一篇

不同根充止点下预备根管对常温流动牙胶充填质量的影响

黎景景(), 李俊亮, 高雅凡, 钱雅洁, 何琴, 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:2017-07-21 修回日期:2017-10-04 发布日期:2018-08-31
  • 作者简介:

    【作者简介】 黎景景,医师,硕士, Email:492207014@qq.com

  • 基金资助:
    江苏省重点研发计划(社会发展)(BE2016623);南京市医学科技发展项目(YKK15113);南京市科技计划项目(201605043)

Effects of different root canal filling stop on quality of root canal filling in root canals obturated with GuttaFlow

Jingjing LI(), Junliang LI, Yafan GAO, Yajie QIAN, Qin HE, Weidong YANG()   

  1. Department of Endodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, China
  • Received:2017-07-21 Revised:2017-10-04 Published:2018-08-31

摘要:

目的 研究不同根充止点下预备前牙单根管对常温流动牙胶充填质量和根尖封闭性的影响。方法 离体单根管前牙60颗,按随机对照实验设计的原则,以不同根充止点(分别距根尖孔0.5 mm、1 mm及2 mm处)随机分为3组,均用0.06锥度MTwo镍钛器械预备至25号,采用GuttaFlow常温流动牙胶根管充填,记录充填物超填情况,X线片评价充填情况,透明技术染料渗透法观察根尖封闭情况。结果 在不同根充止点下预备后,随着根充止点离根尖孔距离缩短,虽然超填的根管数增加,但差异无统计学意义。随着根充止点离根尖孔距离增加,欠填的根管数增加,其中根充止点离根尖孔2 mm组的欠填根管数显著高于离根尖孔0.5 mm组。根充止点离根尖孔处0.5 mm或1 mm,常温流动牙胶充填后微渗漏结果差异无统计学意义,而根充止点离根尖孔2 mm组微渗漏距离显著增加。结论 根充止点离根尖孔0.5 mm或1 mm可提高常温流动牙胶充填质量。

关键词: 常温流动牙胶, 根尖预备, 根充止点, 充填质量, 微渗漏

Abstract:

Objective To investigate the effects of different root canal filling stop on quality of root canal filling and apical sealing in root canals obturated with GuttaFlow. Methods 60 teeth were randomly divided into three groups, using different root canal filling stops to shape the root canals with MTwo (25/06) file. All root canals were obturated with Gutta Flow, and the overfilling of the root canals were recorded and evaluated by X-ray. And the apical microleakage of teeth was evaluated by transparent teeth technique. Results The roots were prepared with MTwo (25/06) as master apical file, the overfilling rate of the root canals in root canal filling stop was higher as the distance from the apex was shorter, but there was no significant difference. The under-filling rate of the root canals in root canal filling stop was higher as the distance from the apex was longer. And the under-filled root canals in root canal filling stop 0.5 mm from the apex showed a statistically significant difference with 2 mm. The mean dyeing penetration length in 0.5 mm and 1 mm group was significantly shorter than 2 mm group. Conclusion A suitable root canal filling stop could improve the quality of root canal filling in root canals obturated with GuttaFlow.

Key words: GuttaFlow, Root preparation, Root canal filling stop, Obturation quality, Microleakage

中图分类号: 

  • R781.3

表1

流动牙胶充填根管过程中3组充填物超填情况"

组别 根管数 超填根管数
A组 20 6
B组 20 3
C组 20 2

表2

X线片评价流动牙胶充填根管后3组充填情况"

组别 根管 超填 恰填 欠填
A组(止点距工作长度0.5 mm) 20 6 14 0
B组(止点距工作长度1 mm) 20 4 14 2
C组(止点距工作长度2 mm) 20 2 13 5

图1

体视显微镜下观察流动牙胶充填根管后3组根尖微渗漏情况 × 10 a: A组,为止点距工作长度0.5 mm; b: B组,为止点距工作长度1 mm; c: C组,为止点距工作长度2 mm; d: 阴性对照组; e:阳性对照组。"

图2

流动牙胶充填根管后3组根尖微渗漏情况 A组(止点距工作长度0.5 mm): (1.87 ± 0.77) mm; B组(止点距工作长度1 mm):(1.91 ± 0.58) mm; C组(止点距工作长度2 mm):(3.44 ± 1.06) mm。**为P < 0.001。"

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