中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (3): 461-464.doi: 10.3969/j.issn.1673-8225.2010.03.019

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

粘固剂种类及牙体预备时机对纤维桩冠方微渗漏的影响

雷慧云1，陈  蕾1，徐国富2，梁霄鹏2，李继佳1   

  1. 1中南大学附属湘雅医院口腔科，湖南省长沙市  410008; 2中南大学材料科学与工程学院，湖南省长沙市  410008
  • 出版日期:2010-01-15 发布日期:2010-01-15
  • 通讯作者: 陈 蕾，副主任医师，中南大学附属湘雅医院口腔科，湖南省长沙市 410008 chenleidt@163.com
  • 作者简介:雷慧云★，女，1984年生，湖南省郴州市人，中南大学附属湘雅医院口腔科在读硕士，主要从事桩核微渗漏的研究。 leihuiyun_xy@163.com
  • 基金资助:

    本课题为湖南省自然科学基金资助项目，项目批准号09JJ3029，学科代码：C170803，课题名称：薄弱根管重塑后桩核冠修复的生物学研究及临床应用。

Effect of different types of cements and the timing of tooth preparation on the coronal microleakage of fiber post

Lei Hui-yun1, Chen Lei1, Xu Guo-fu2, Liang Xiao-peng2, Li Ji-jia1   

  1. 1 Department of Stomatology, Xiangya Hospital, Central South University, Changsha   410008, Hunan Province, China; 2 School of Materials Science and Engineering, Central South University, Changsha  410008, Hunan Province, China
  • Online:2010-01-15 Published:2010-01-15
  • Contact: Chen Lei, Associate chief physician, Department of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China chenleidt@163.com
  • About author:Lei Hui-yun★, Studying for master’s degree, Department of Stomatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China leihuiyun_xy@163.com
  • Supported by:

    the Natural Science Foundation of Hunan Province, No. 09JJ3029*

PDF

495

被引次数

32

摘要：

背景：牙体预备过程中高速涡轮机振动可破坏粘固剂与牙根、粘固剂与桩界面内的连续作用力，影响桩核的冠方封闭效果。
目的：观察不同种类的粘固剂在不同时机行牙体预备对纤维桩冠方微渗漏的影响。
方法：下颌单根管前磨牙随机分成3个实验组，在桩道预备后分别用Rely X luting、Panavia F、Paracore 5 mL粘接纤维桩。3个实验组内随机分成A，B，C 3个亚组，分别在粘固剂调和15，45，90 min后进行牙体预备后，经染色及透明化处理。在体式显微镜下记录各亚组微渗漏得分。
结果与结论：同一牙体预备时机下，Rely X luting对纤维桩造成的冠方微渗漏影响最明显，Panavia F其次，Paracore 5 mL则最少；同一种粘固剂完全固化后，不同牙体预备时机对纤维桩冠方微渗漏无影响。

关键词: 粘固剂, 纤维桩, 牙体预备, 微渗漏

Abstract:

BACKGROUND: The vibration of high speed handpiece during tooth preparation may have adverse effect on the continuous force of the bonding interfaces among the cement, dentin, and post core.
OBJECTIVE: To find the effect of different types of cements on the coronal microleakage of fiber post under different tooth preparation timings, and to provide evidence for the clinical operation.
METHODS: The extracted mandibular premolars were divided into 3 groups, and they were cemented by Rely X luting, Panavia F and Paracore 5 mL, respectively. Each group was averagely divided into 3 subgroups: A, B, C groups which were prepared 15 minutes, 45 minutes, and 90 minutes after the cements mixed. All roots were then dyed and transparented. The teeth were observed under stereoscopic microscope and the dyeing scores were also recorded.
RESULTS AND CONCLUSION: Rely X luting caused the highest coronal microleakage of fiber post, followed by Panavia F, while Paracore 5 mL brought about the lowest under the same tooth preparation timing. Different tooth preparation timing caused no significant effect on the coronal microleakage of fiber post when the cement had been completely set.

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