Effect of Filler Particle Size on Wear Resistance of Resin Cement

填料粒径对树脂水泥耐磨性能的影响

• 批准号: 08457513
• 负责人: SHINKAI Koichi
• 金额: $ 2.37万
• 依托单位: The Nippon Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08457513/
• 关键词: Resin cement; Wear resistance; Filler particle size

The purpose of this study was to evaluate the effect of filler particle size on wear resistance of resin cement. Materials tested in this study were four experimental dual-cure (DC) resin cements (Kuraray Co., Japan), which contained fillers of different sizes. The cusps of the extracted human molars were ground to a flat occlusal surface using a 600 grit silicon carbide paper. A rectangular cavity was prepared in the occlusal surface of each tooth. Ceramic inlays were then fabricated using the CEREC 2 system. The inlays were cemented with the respective experimental resin cements and adhesive systems according to manufacturer's directions, The restored surface was finished and polished by wet-grinding with 800 grit silicon carbide paper. Six specimens were prepared for each resin cement. Half of the specimens were subjected to three-body wear test for 200,000 cycles, and the others were subjected to toothbrush abrasion for 30,000 cycles, both using an in vitro wear testing device. The … More worn surface of the resin cement was scanned and traced, using a profilometer (Surfcom 475 A, Tokyo Seimitsu) at 8 different points. Replicas were made and observed under SEM.The vertical gap depth of each resin cement was measured on the respective profilometric tracing as the wear value. The data was statistically analyzed by one-way ANOVA.The results are as follow :There were significant differences among the wear values of the resin cements for both wear test, except for those of resin cement I and resin cement IV.The results of the toothbrush abrasion test showed that resin cement with large filler exhibited the least wear. On the other hand, the three-body wear test showed a different result. The resin cement with large filler exhibited the most wear. SEM observation showed filler particles protruding from the worn surface of resin cements IT and III after toothbrush abrasion testing and small defects caused by the exfoliation of particles after three-body wear testing. The worn surfaces of resin cement I and IV with filler particle size of less than 1.0 mum were seem to be smoother than those of the other cements. Less

本研究的目的是评估填料粒径对树脂水门汀耐磨性的影响。本研究中测试的材料是四种实验性双固化（DC）树脂粘固剂（Kuraray Co.，日本），其含有不同尺寸的填料。使用600粒度的碳化硅纸将拔出的人磨牙的牙尖研磨成平坦的咬合面。在每颗牙齿的咬合面制备一个矩形洞。然后使用CEREC 2系统制造陶瓷嵌体。根据制造商的说明书，用相应的实验树脂粘固剂和粘合剂系统粘结嵌体。通过用800粒度的碳化硅纸湿磨来修整和抛光修复表面。每种树脂粘固剂制备6个样本。一半样本接受了200，000次循环的三体磨损测试，其余样本接受了30，000次循环的牙刷磨损测试，两者都使用体外磨损测试装置。的 ...更多信息 使用表面光度计（Surfcom 475 A，Tokyo Seimitsu）在8个不同点扫描和跟踪树脂粘固剂的磨损表面。复制并在SEM下观察。在各自的轮廓跟踪上测量每种树脂粘固剂的垂直间隙深度作为磨损值。结果表明：除树脂粘固剂I和树脂粘固剂IV的磨损值不同外，其余两种树脂粘固剂的磨损值差异均有统计学意义。牙刷磨损试验结果表明，填充量大的树脂粘固剂磨损最小。另一方面，三体磨损试验显示了不同的结果。填充量大的树脂水门汀磨损最大。扫描电镜观察显示，在牙刷磨损试验后，树脂粘固剂IT和III的磨损表面上有填充物颗粒突出，在三体磨损试验后，颗粒剥落引起的小缺陷。填料粒径小于1.0 μ m的树脂水泥I和IV的磨损表面似乎比其他水泥更光滑。少

项目成果

新海 航一: "フィラー粒子径がレジンセメントの耐摩耗性に及ぼす影響について" 日本歯科保存学雑誌. 41巻6号. (1998)

Koichi Shinkai：“填料粒径对树脂水泥耐磨性的影响”，日本保守牙科杂志，第 41 卷，第 6 期（1998 年）。

新海航一: "フィラー粒子径がレジンセメントの耐摩耗性に及ぼす影響について" 日本歯科保存学雑誌. 41巻3号. (1998)

Koichi Shinkai：“填料粒径对树脂水泥耐磨性的影响”，日本保守牙科杂志，第 41 卷，第 3 期（1998 年）。