Minimization of the marginal deterioration of ceramic inlays with fractographic examination.

通过断口检查最大限度地减少陶瓷镶嵌物的边缘劣化。

• 批准号: 14370618
• 负责人: TAKESHIGE Fumio
• 金额: $ 7.49万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14370618/
• 关键词: Fatigue crack propagation test; Tooth-colored inlay; Ceramic inlay; Marginal deterioration; Fractography; Cement line; セラミッックインレー

We investigated quantitatively and morphologically analyzed and clarified the marginal changes of ceramic inlays and determined the mechanism for those changes. Marginal disintegration at the functional cusp area was significantly greater than at the non-functional cusp area (Wilcoxon signed-ranks test, p<0.05). Quantitative measurement and fractographic examination identified a sequential three-stage pattern of marginal deterioration ; initial rapid progress of wear of resin composite cement in the first stage, followed by a second stage without any remarkable visible change, then rapid progression of microfractures of ceramics and/or enamel in the third stage. Boundaries between the first and second stage were found in the six and 21-month period, and those between the second and third stage at 72 months. It was concluded that longitudinal marginal deterioration of ceramic inlays progressed in a sequential three-stage pattern.We established an in vitro acceleration test of the margin … More al deterioration of ceramic inlays reproducing in vivo deterioration and to investigate the influence of the cement thickness on the marginal deterioration. It was confirmed that the in vitro acceleration test, which was a total of 1,600 cyclic wear loadings, successfully reproduced the in vivo three-sequential marginal deterioration quantitatively and morphologically. Significantly less marginal deterioration was observed in a specimen with the cement width of 100 μm (ANOVA and Scheffe's F test, p<0.05). It was suggested that cement width should be less than 100 μm to minimize the marginal deterioration of ceramic inlays.A significant correlation was found to exist between explorer tip diameter and the Alfa/Bravo boundary for horizontal gaps, but not for vertical steps. It was suggested that visual inspection aided and unaided with loupes had no significant effect on the evaluation of simulated marginal discrepancies. The findings highlight the importance of the traditional dental explorer - in the absence of a more discriminatory device, in the assessment of marginal discrepancies in restorations. Less

通过对全瓷嵌体边缘变化的形态学和定量分析，阐明了全瓷嵌体边缘变化的机理。功能性瓣尖区域的边缘崩解显著大于非功能性瓣尖区域（Wilcoxon符号秩检验，p<0.05）。定量测量和断口形貌检查确定了一个连续的三个阶段的模式的边缘恶化，在第一阶段的树脂复合水泥磨损的初始快速进展，其次是第二阶段没有任何显着的可见变化，然后在第三阶段的陶瓷和/或釉质的微骨折的快速进展。第一、第二阶段在6个月和21个月之间分界，第二、第三阶段在72个月之间分界。结果表明，全瓷嵌体纵向边缘退化呈三个阶段的变化规律， ...更多信息 陶瓷嵌体在体内退化的再现，并探讨骨水泥厚度对边缘退化的影响。经证实，体外加速试验（共1，600次循环磨损载荷）在定量和形态学上成功再现了体内三个连续边缘退化。在骨水泥宽度为100 μm的样本中观察到的边缘退化显著较少（ANOVA和Scheffe's F检验，p<0.05）。结果表明，在水平间隙时，探针尖端直径与Alfa/Bravo边界存在显著相关性，而在垂直台阶时，探针尖端直径与Alfa/Bravo边界无显著相关性。结果表明，用放大镜辅助和不辅助目视检查对模拟边缘差异的评价没有显著影响。研究结果强调了传统牙科探查器的重要性-在缺乏更具歧视性的设备的情况下，在评估边缘差异的情况下。少

项目成果

Quality of marginal adaptation evaluation of composites in clinical trials

临床试验中复合材料的边际适应性评价质量

• 发表时间: 2003
• 期刊: Journal of Dental Research 82・1
• 作者: Hayashi M. et al.

林 美加子: "セラミックインレーのin vitro辺縁劣化試験の確立-レジンセメント幅が辺縁劣化に及ぼす影響-"日本歯科保存学雑誌. 47・1. 1-8 (2004)

Mikako Hayashi：“陶瓷嵌体的体外边缘劣化试验的建立 - 树脂粘固剂宽度对边缘劣化的影响”日本保守牙科杂志 47・1（2004 年）。

Influence of explorer tip diameter in identifying restoration margin discrepancies

• DOI: 10.1016/j.jdent.2005.01.006
• 发表时间: 2005-09-01
• 期刊: JOURNAL OF DENTISTRY
• 影响因子: 4.4
• 作者: Hayashi, M;Wilson, NHF;Watts, DC
• 通讯作者: Watts, DC

Analysis of Longitudinal Marginal Deterioration of Ceramic Inlays

陶瓷嵌体纵向边缘劣化分析

• 发表时间: 2004
• 期刊: Operative Dentistry 29・4
• 作者: Ariji Y;Sakuma S;Izumi M;Sasaki J;Kurita K;Ogi N;Nojiri M;Nakagawa M;Takenaka M;Katsuse S;Ariji E.;Hayashi M. et al.
• 通讯作者: Hayashi M. et al.

Establishment of in vitro acceleration test of marginal deterioration of ceramic inlay -Influence of resin cement thickness on marginal deterioration-

陶瓷嵌体边缘劣化体外加速试验的建立-树脂水门汀厚度对边缘劣化的影响-

• 发表时间: 2004
• 期刊: Japanese Journal of Conservative Dentistry 47(1)
• 作者: Puapichartdumrong P;Ikeda H;Suda H.;Hayashi M. et al.
• 通讯作者: Hayashi M. et al.