华西口腔医学杂志

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桩-粘接剂-根管内壁牙本质界面的拉曼光谱分析

李振春1, 吴璇2, 陈小冬1, 马红梅3, 郝凤渝3   

  1. 1.大连市口腔医院大连大学附属口腔医院修复科, 辽宁大连116021; 2.解放军总医院口腔科, 北京100853; 3.中国医科大学附属口腔医院修复科, 辽宁沈阳110002
  • 收稿日期:2007-06-25 修回日期:2007-06-25 出版日期:2007-06-20 发布日期:2007-06-20
  • 通讯作者: 李振春,Tel:13940967858
  • 作者简介:李振春(1960-),男,山东人,教授,硕士
  • 基金资助:

    辽宁省自然科学基金资助项目(20042099)

Raman Spectroscopic Analysis of Post- cement- root Canal Dentin Inter face

LI Zhen- chun1, WU Xuan2, CHEN Xiao- dong1, MA Hong- mei3, HAO Feng- yu3   

  1. 1. Dept. of Prosthodontics, Dalian Stomatological Hospital,School and Hospital of Stomatology, Dalian University, Dalian 116021, China;2. Dept. of Dentistry, PLA General Hospital, Beijing 100853, China; 3. Dept. of Prosthodontics, School of Stomatology, China Medical University, Shenyang 110002, China
  • Received:2007-06-25 Revised:2007-06-25 Online:2007-06-20 Published:2007-06-20
  • Contact: LI Zhen- chun,Tel:13940967858

摘要:

目的本实验采用显微激光拉曼光谱仪观测根管内壁牙本质- 粘接剂- 桩粘接界面的物质过渡变化,了解不同粘接材料与根管内壁牙本质的结合方式,探讨不同粘接剂对桩固位力影响的原因。方法将钛桩和玻璃纤维桩分别使用磷酸锌黏固剂、玻璃离子黏固剂和树脂粘接材料粘着于离体牙根管内,用显微激光拉曼光谱仪分别测量其光谱,并与粘着前粘接底物和粘接剂的光谱进行对比,探讨粘接前后的光谱变化。结果磷酸锌黏固剂- 牙本质和玻璃离子黏固剂- 牙本质界面未见改变,而树脂- 牙本质及树脂- 玻璃纤维桩界面可见明显激光拉曼光谱混合带改变。结论显微激光拉曼光谱仪是研究修复粘接界面的有效手段。不同粘接材料与牙本质结合方式不同,本实验使用的树脂类粘接材料可渗入到根管内壁及玻璃纤维桩材料内。

关键词: 显微激光拉曼光谱仪, 根管内壁牙本质, 粘接剂,

Abstract:

Objective To examine the compositions of those adhesion modes between luting cements and canal dentin, and to evaluate the dentin- cement- post interface by Laser- Raman spectroscopy. Methods Three representative luting cements(zinc phosphate, glass ionomer and resin cements), two kinds of prefabricated posts(titanium and fiber - glass), six extracted intact human maxillary anterior teeth were used canal dentin after endodontic treatment. Laser- Raman spectroscopy measure of cement, post and canal dentin before and after luting together. Results There are no evident Raman spectra change cross the ZPC/dentin interface and glass ionomer/dentin interface, while cross the resin/dentin interface and resin/glass fiber post interface can be seen special Raman spectra. Conclusion Laser- Raman microspectroscopy is a useful analytical technique for evaluation interface between dentin and luting cements. Resin cement may interact with dentin and glass fiber post.

Key words: Laser- Raman microspectroscopy, root canal dentin, luting cement, post