Development of electrical method for diagnosis of microleakage of restrorations by three dimensional analysis

三维分析诊断修复体微渗漏的电学方法的发展

• 批准号: 15592018
• 负责人: IWAMI Yukiteru
• 金额: $ 2.11万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15592018/
• 关键词: restoration; microleakage; adaptability of cavity wall; electrical method; Three-dimensional analysis

A new objective electrical method for diagnosis of microleakage along restoratives that was used the change of conductance across the margin was designed by us. The aim of this study was for development an objective clinical microleakage diagnosis. First, a quantitative three-dimensional method for evaluation of the contraction gap in restoratives was designed. Coronal cavities were prepared in human extracted molars and were filled with a composite. After that, specimens were reduced every 100μm in a direction perpendicular to the cavity floors. The images of the surfaces of reducing the sections were taken with CCD camera, three-dimensional images of these microleakages were made and the three-dimensional actual amounts of microleakage were evaluated. From this experiment, the measurement condition and concrete method of the quantitative three-dimensional evaluation method of contraction gap was established. Second, the results by our electrical method were compared with those by thr … More ee-dimensional method in in vitro situation. Concretely, coronal cavities were prepared in human extracted molars and were filled with a composite. The changes of conductance across the margin of these restoratives before cavity preparation, after polishing and after load cycling until 10000 times (400g load) for evaluation of microleakage. In addition, after dye penetration, the three-dimensional images of these microleakage were made and the three-dimensional actual amounts of microleakage were evaluated. From the results of this experiment, the results by conductance measurements were correlated with the actual amounts of microleakage by three-dimensional method. After this experiment, the electrical evaluation of microleakage with some dogs was tried, but much noise was generated as the low voltage of our LCR meter. Therefore, the in vivo experiment is future theme. However, the quantitative three-dimensional evaluate method of contraction gap was developed and the valuable of the electrical method for diagnosis of microleakage was proved by the three-dimensional method. Less

我们设计了一种新的客观电学方法来诊断修复体沿修复体的微渗漏，即通过边缘电导的变化来诊断。本研究的目的是建立一种客观的临床微渗漏诊断方法。首先，设计了一种定量三维评价修复体收缩间隙的方法。在人类拔除的磨牙中制备冠状窝洞，并用复合材料填充。在此之后，试件在垂直于空洞底板的方向上每隔100μm进行缩小。用电荷耦合器件摄像减少断面的表面图像，对这些微渗漏进行三维成像，并对三维实际的微渗漏量进行评估。通过本次实验，确立了收缩缝隙定量三维评价方法的测量条件和具体方法。其次，将我们的电学方法的结果与…的结果进行了比较更多的是在体外情况下的三维方法。具体地说，在人类拔除的磨牙中制备冠洞，并用复合材料填充。这些修复体在预备洞前、抛光后和加载循环10000次(400g负载)后的边缘电导的变化用于评估微渗漏。此外，在染料渗透后，制作这些微渗漏的三维图像，并评估三维实际微渗漏量。从实验结果来看，电导测量的结果与三维方法测得的微渗漏量进行了关联。实验结束后，我们尝试了用一些狗进行微泄漏的电学评估，但由于我们的LCR测试仪电压低，产生了很大的噪声。因此，体内实验是未来的主题。建立了收缩间隙的定量三维评价方法，并用三维方法证明了电学方法在微渗漏诊断中的价值。较少

项目成果

岩見 行晃: "歯冠修復物の辺縁漏洩に対する立体的解析法"日本歯科保存学雑誌. 46秋季特別号. 76 (2003)

Yukiaki Iwami：“牙冠修复体边缘渗漏的三维分析方法”日本保守牙科杂志 46 秋季特刊（2003 年）。

Three-dimensional evaluation of gap formation of cervical restorations.

颈椎修复体间隙形成的三维评价。

• 发表时间: 2005
• 期刊: Journal of Dentistry 33巻
• 作者: Iwami Y;Hayashi M;Takeshige F et al.;Iwami Y. et al.;Iwami Y. et al.;Hayashi M.et al.;Hayashi M.et al.;Hayashi M.et al.;Hayashi M.et al.;Iwami Y.et al.
• 通讯作者: Iwami Y.et al.

Influence of vision on the evaluation of marginal discrepancies in restorations.

视力对修复体边缘差异评估的影响。

• 发表时间: 2005
• 期刊: Journal of Dentistry (in press)
• 作者: 須田朋代;菊地寛高;高山直士;田島雅道ら;Hayashi M. et al.
• 通讯作者: Hayashi M. et al.

Quantitative Measurement of Marginal Disintegration of Ceramic Inlays

陶瓷嵌体边缘崩解的定量测量

• 发表时间: 2004
• 期刊: Operative Dentistry 29・1
• 作者: Katsumata A;Iida Y;Fujishita M;Ariji Y;Ariji E.;Hayashi M. et al.;Hayashi M. et al.
• 通讯作者: Hayashi M. et al.