天津医药

天津医药 ›› 2018, Vol. 46 ›› Issue (3): 251-254.doi: 10.11958/20171059

• 实验研究 • 上一篇    下一篇

不同根管终末冲洗方案对硅氧烷类根管封闭剂与牙本质粘接性能的影响

张昕，李志伟，苗苗，刘颖   

  1. 1天津医科大学口腔医院（邮编300070）；2天津市滨海新区中医医院；3河北医科大学口腔医院
  • 收稿日期:2017-10-10 修回日期:2018-01-14 出版日期:2018-03-15 发布日期:2018-03-23
  • 通讯作者: 苗苗 E-mail:miaodent@163.com
  • 基金资助:
    仿生肽引导纳米无定形磷酸钙定向有序再矿化牙体硬组织

The effect of different final intracanal irrigants on the bond strength of silicone -based sealer to root canal walls

ZHANG Xin,LI Zhi-wei, MIAO Miao,LIU Ying   

  1. 1 The Stomatological Hospital of Tianjin Medical University, Tianjin 300070, China; 2 Tianjin Binhai New Area Hospital of TCM; 3 The Stomatological Hospital of Hebei Medical University
  • Received:2017-10-10 Revised:2018-01-14 Published:2018-03-15 Online:2018-03-23
  • Contact: Miao MIAO E-mail:miaodent@163.com

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摘要： 目的 比较新型根管冲洗药物 QMiX，17% 乙二胺四乙酸（EDTA）+0.2% 西曲溴铵（CTR）作为终末根管冲洗方案对硅氧烷类根管封闭剂 GuttaFlow 与根管壁牙本质粘接性能的影响。方法 30 颗单根离体人牙截冠后根管预备，随机分为 3 组给予不同终末冲洗方案（n=10），QMiX 组、EDTA+CTR 组及生理盐水（NS）组。螺旋充填器导入GuttaFlow 充填根管。每个牙根由冠方向根方依次获取 3 个厚度约为 2 mm 的水平切片，应用薄片推出实验进行粘接强度检测。体式显微镜下观察断裂方式。结果 QMiX 组的 GuttaFlow 根管封闭剂与根管壁牙本质的粘接强度显著高于 EDTA+CTR 组和 NS 组（P＜0.05），EDTA+CTR 组与 NS 组间差异无统计学意义（P＞0.05）。不同终末冲洗方案均以混合型断裂为主要断裂方式。结论 QMiX 作为终末冲洗方案可提高硅氧烷类根管封闭剂 GuttaFlow 与根管壁牙本质的粘接效果，但 EDTA+CTR 配伍方案对粘接强度无显著影响。

关键词: 根管冲洗剂, 终末冲洗, 根管封闭剂, 粘接强度, QMiX, 西曲溴铵, GuttaFlow

Abstract: Objective To evaluate the bond strength of GuttaFlow sealers to root canal walls after final rinse with two novel fi nal irrigation regimens, QMiX and 17%EDTA + 0.2%Cetrimide (CTR). Methods Thirty single-canal teeth were prepared chemomechanically using 5.25% sodium hypochlorite (NaOCl) as root canal irrigants. The teeth were then randomly distributed into three groups (n = 10) according to the final irrigation protocol: QMiX group, 17% EDTA followed by CTR group and control group (normal saline, NS). After the filling with GuttaFlow using a lentulo spiral, the roots were transversally sectioned to obtain 2 mm thick dentinal slices. Then a push-out bond strength test was carried out, and failure mode was determined at × 24 magnification. Results The push-out bond strength was significantly higher in QMiX group than that of EDTA+CTR group and NS group (P＜0.05), and no significant difference was observed between EDTA+CTR and NS groups (P＞0.05). The failure patterns were mainly mixed. Conclusion The QMiX, as the final irrigant, can improve the bond strength of silicone-based sealer GuttaFlow.

Key words: root canal irrigants, final irrigation, root canal sealer；bond strength, QMiX, CTR, GuttaFlow

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