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中华口腔医学研究杂志(电子版) ›› 2010, Vol. 4 ›› Issue (03) : 268 -274. doi: 10.3877/cma.j.issn.1674-1366.2010.03.010

临床研究

暂时封固对根管治疗牙冠方微渗漏影响的体外研究
高燕1, 杨金玲1, 吕陶红1, 庄沛林1, 凌均棨,1   
  1. 1.510055 广州,中山大学光华口腔医学院·附属口腔医院·口腔医学研究所
  • 收稿日期:2009-03-19 出版日期:2010-06-01
  • 通信作者: 凌均棨
  • 基金资助:
    2007~2009 年度卫生部部属(管)医院临床学科重点项目(难治性牙髓根尖周病序列治疗提高远期疗效的研究)

In vitro study of influence of temporary fillings on coronal microleakage of endodontically treated teeth

Yan GAO1, Jin-ling YANG1, Tao-hong LV1, Pei-lin ZHUANG1, Jun-qi LING,1   

  1. 1.Guanghua School of Stomatology, Institute of Stomatological Research, Sun Yat-sen University,Guangzhou 510055, China
  • Received:2009-03-19 Published:2010-06-01
  • Corresponding author: Jun-qi LING
引用本文:

高燕, 杨金玲, 吕陶红, 庄沛林, 凌均棨. 暂时封固对根管治疗牙冠方微渗漏影响的体外研究[J/OL]. 中华口腔医学研究杂志(电子版), 2010, 4(03): 268-274.

Yan GAO, Jin-ling YANG, Tao-hong LV, Pei-lin ZHUANG, Jun-qi LING. In vitro study of influence of temporary fillings on coronal microleakage of endodontically treated teeth[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2010, 4(03): 268-274.

目的

评价不同暂封材料、暂封方式对根管治疗牙冠方微渗漏的影响,探讨根管治疗牙冠方微渗漏发生情况及与时间的关系。

方法

收集离体牙,常规根管治疗后随机分组,2%亚甲基蓝染色,制作透明样本,体视显微镜下观察样本微渗漏情况,根据染料渗漏最大长度评分,收集数据并进行统计分析。

结果

暂封1、4 周时,Cavit-G 和Caviton 微渗漏评分低于氧化锌丁香酚水门汀(ZOE);暂封2 周,Caviton 微渗漏评分低于ZOE 和Cavit-G。ZOE 作为暂封材料,两种方式样本微渗漏评分比较差异无统计学意义(P >0.05);暂封1 周时,Cavit-G和Caviton 直接与间接暂封微渗漏评分差异无统计学意义(P >0.05),暂封2 周,Cavit-G 和Caviton 微渗漏评分差异无统计学意义(P >0.05)。随暂封时间的延长,3 种材料的微渗漏差异有统计学意义(P <0.05)。

结论

Caviton 冠方暂封效果最好,其次为Cavit-G,ZOE 最差;间接暂封明显加速Cavit-G 和Caviton 暂封样本冠方微渗漏;Caviton 和Cavit-G 用于暂封的适宜时间为2 周,ZOE 为1 周。

Objective

To evaluate the influence of temporary filling materials, filling methods on coronal microleakage of endodontically treated teeth; to discuss the influence of time on the sealing ability of coronal temporary fillings.

Methods

Extracted teeth were randomly divided after treated with root canal therapy.The samples were stained with 2% methylene blue then made clearing specimens.The specimens were evaluated under stereomicroscope and blindly scored for microleakage.The data collected were then analyzed statistically.

Results

Comparison of various sealing materials: the microleakage scores of ZOE were higher than that of Cavit-G and Caviton in 1 week and 4 weeks; whenever in 2 weeks, the microleakage of Caviton was the lowest of the three.Comparison of filling methods: there was no statistically significant difference between the two filling methods of ZOE group (P >0.05).Directly or indirectly sealing for 1 week, the microleakage scores of Cavit-G and Caviton had no statistically significant difference(P>0.05), while there were statistically significant differences when sealing for 2 or 4 weeks (P <0.05).Influence of sealing time: with the proloning of sealing time, the microleakage scores of the three types of materials increased significantly (P <0.05).

Conclusions

Amongst the three materials, Caviton was better than the other two.Usage of cotton pellets increased the coronal microleakage of Cavit-G and Caviton.The optimum time of temporary fillings was 2 weeks for Caviton and Cavit-G, and 1 week for ZOE.

表1 实验分组
表2 评分标准
表3 各组样本微渗漏评分情况
表4 直接暂封组微渗漏评分的比较
表5 暂封方式微渗漏评分的比较
表6 暂封时间微渗漏的评分比较
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