通过扫描地形图检查不同填充物尺寸的复合树脂的 Vicker 硬度和磨损体积最小化情况

Fahad H. Alkhudhairy, Y. AlFawaz, M. Bin-Shuwaish
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摘要

目的:比较纳米杂化树脂复合材料与其他含填料树脂复合材料的表面硬度。材料与方法:Harmonize (HM)、Tetric N-Ceram (TNC)、Filtek Z250 (Z250) 和 Filtek Z350 (Z350) 四种树脂复合材料的磨料磨损性能。每种复合材料都有六个直径为 10 毫米、厚度为 6 毫米的圆柱形试样用于测试。磨损测试包括在 17 千克负载下对试样进行 800 次磨料磨损。抛光后使用维氏压头显微硬度计测量表面硬度和重量损失。在磨损测试后,使用扫描电镜对每种复合材料的三个试样进行了表面形貌调查。为确定树脂复合材料磨损特性的显著差异,使用单因素方差分析(ANOVA)和 Tukey HSD 检验(α = 0.05)进行了统计分析。结果显示Z350 XT 纳米填充树脂复合材料的体积磨损最大(71.19±2.49 mm3)。最低的是 Z250 微混合修复材料(36.33±1.57 mm3)。 Z250 微混合修复材料的维氏硬度最高(111.24±2.1)。此外,三元 N 陶瓷(TNC)的显微硬度最低(58.41±1.22)。结论研究发现,微混合树脂复合材料 Z250 的耐磨性优于研究中测试的其他复合树脂。
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Examining Vicker Hardness and Wear Volume Minimization in Composite Resin with Different Filler Dimensions via Scanning Topography
Aim: To compare the surface hardness of the nanohybrid resin composite with the other filler-containing resin composites. Material and Method: Abrasive wear properties of four types of resin composites: Harmonize (HM), Tetric N-Ceram (TNC), Filtek Z250 (Z250), and Filtek Z350 (Z350). Each composite had six 10 mm-diameter, 6 mm-thick cylindrical specimens for testing. The wear test involved subjecting the specimens to 800 cycles of abrasive wear under a 17 kg load. Surface hardness and weight loss were measured using a Vickers indenter micro-hardness tester after polishing. Surface morphology investigation was carried out using SEM on three specimens from each composite after the wear test. To identify significant differences in the wear characteristics of the resin composites, statistical analysis was conducted using one-way analysis of variance (ANOVA) and the Tukey HSD test (with α = 0.05). Results: The highest volumetric wear loss was observed in the Z350 XT nano-filled resin composite (71.19±2.49 mm3). The lowest was found in Z250 micro hybrid restorative material (36.33±1.57 mm3). The highest Vickers hardness was found in the Z250 micro-hybrid restorative material (111.24±2.1). Moreover, the lowest microhardness was found in tetric N ceram (TNC) (58.41±1.22). Conclusion: The wear resistance of micro-hybrid resin composite Z250 was found to be superior to that of other composite resins tested in the study.
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