中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (29): 5393-5396.doi: 10.3969/j.issn.1673-8225.2011.29.018

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

不同表面处理方法对纤维桩与聚氨酯黏结剂黏结强度的影响

陈晓兵1，陈湘涛1，陈  琳2   

  1. 1佳木斯大学附属口腔医院，黑龙江省佳木斯市  154002
    2佳木斯市金爵齿科研究所，黑龙江省佳木斯市  154002
  • 收稿日期:2011-01-26 修回日期:2011-03-16 出版日期:2011-07-16 发布日期:2011-07-16
  • 通讯作者: 陈湘涛，佳木斯大学附属口腔医院，黑龙江省佳木斯市 154002
  • 作者简介:陈晓兵★，男，1982年生，黑龙江省双鸭山市人，汉族，2011年佳木斯大学毕业，硕士，主要从事口腔修复材料与力学的研究。 chenxiangtao0298@163.com

Effect of different surface treatments on fiber post and bonding strength of polyurethane binder

Chen Xiao-bing1, Chen Xiang-tao1, Chen Lin2   

  1. 1Affiliated Stomatological Hospital of Jiamusi University, Jiamusi  154002, Heilongjiang Province, China
    2Jinjue Dental Institute of Jiamusi, Jiamusi  154002, Heilongjiang Province, China
  • Received:2011-01-26 Revised:2011-03-16 Online:2011-07-16 Published:2011-07-16
  • Contact: Chen Xiang-tao, Affiliated Stomatological Hospital of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China
  • About author:Chen Xiao-bing★, Master, Affiliated Stomatological Hospital of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China chenxiangtao0298@163.com

PDF

396

被引次数

10

摘要：

背景：纤维桩具有良好的美学性能，其弹性模量与牙本质类似，能很好地分散应力；随着其在临床应用的日益增多，纤维桩与根管的脱黏结现象逐渐增加，为此提高纤维桩的黏结是非常有意义的。聚氨酯黏结剂是近年来发展起来的黏结材料，有研究显示其对多种材料均有很强的黏结力，但在口腔修复领域应用情况研究甚少。
目的：应用聚氨酯黏结剂比较纤维桩经4种不同表面处理的黏结强度。
方法：选取25个上颌单根管离体牙截冠后经根管预备、根管充填和桩道预备，随机分为5组，纤维桩表面在粘固前分别经喷砂处理、过氧化氢处理、硅烷偶联剂处理、HF酸处理，对照组不做处理。处理后的纤维桩用聚氨酯黏结剂粘固于根管内制作试件，将牙切成2 mm厚薄片进行微推出实验，用万能试验机测试黏结强度，对表面处理前后的玻璃纤维桩进行扫描电镜观察。
结果与结论：各组之间黏结强度为过氧化氢组>硅烷化组>喷砂组>HF酸处理组>对照组，硅烷化组和喷砂组间黏结强度差异无显著性意义(P > 0.05)，其余各组间相比，差异有显著性意义(P < 0.05)。扫描电镜观察显示经表面处理后的玻璃纤维桩表面有不同程度的树脂基质溶解，有些存在玻璃纤维露出。结果证实经4种表面处理的纤维桩均能提高与聚氨酯黏结材料的黏结强度，过氧化氢处理后黏结强度最强。

关键词: 纤维桩, 表面处理, 聚氨酯, 黏结, 微推出测试

Abstract:

BACKGROUND: Fiber post has a favorable aesthetics feature, the elasticity modulus of it is similar to dentin, which has a good dispersion stress; with its clinical application increase, losing bonding phenomenon of fiber post and root canal is gradually increase. Thus it is meaningful to improve the bonding of fiber post. Polyurethane binder is binding materials developed in recent years. Recent researches showed that polyurethane binder has great bonding strength to many materials, but there is little research in prosthodontics field.
OBJECTIVE: To compare bonding strength of the fiber post after 4 different surface treatments by using of polyurethane binder.
METHODS: Totally 25 single root canal of upper jaw to exsomatize the intercepting dental crown, then preparing root canal, root-canalfilling as well as post space preparation, which were randomly divided into 5 groups: sand blast treatment group, hydrogen peroxide treatment group, silicon alkylation treatment group, hydrofluoric (HF) acid treatment and control group. Before cementation of fiber post surface, it underwent sand blast treatment, hydrogen peroxide treatment, silicon alkylation treatment and HF treatment, and no treatment was given in the control group. The treated fiber post was cemented with polyurethane binder to make test specimen in the root canal. The tooth was cut into 2 mm piece to perform push-out experiment. The bonding strength was detected by universal testing machine, and glass fiber post was observed by scanning electron microscope (SEM) before and after surface treatment.
RESULTS AND CONCLUSION: Each group has difference in bonding strength, hydrogen peroxide treatment group > silicon alkylation treatment group > sand blast treatment group > HF acid treatment treatment > control group. There was no significant difference in bonding strength between silicon alkylation treatment group and sand blast treatment group (P > 0.05). There was significant difference in other groups (P < 0.05). SEM observation showed that the surface of the fiber post had varying degrees of resin matrix dissolution after surface treatment, some fiber post came out. Fiber post can improve the strength of materials combined with polyurethane binder after 4 different surface treatments; the bonding strength of it is the greatest after hydrogen peroxide treatment.

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