在模拟刷牙后,树脂复合材料和CAD/CAM块的表面性能
1*Masaya Suzuki, DDS, PhD, Department of Operative Dentistry, The Nippon Dental University School of Life Dentistry at Niigata.
Operative dentistry
|August 28, 2023
概括
牙刷磨损减少了表面的光泽,并增加了基于树脂的牙材料的粗度. 树脂复合材料中较大的填充颗粒通常会导致较低的粗度和更好的耐磨性.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 恢复性牙科 恢复性牙科
背景情况:
- 牙修复材料经历磨损,影响其美学和功能.
- 了解材料对磨损的反应对于临床寿命至关重要.
研究的目的:
- 评估牙刷磨损对各种牙科修复材料表面光泽,粗度和颜色的影响.
- 为了比较不同树脂复合材料和CAD/CAM块的耐磨性.
主要方法:
- 七种材料,包括树脂复合材料和CAD/CAM块,经历了8万次牙刷冲动.
- 测量了表面光泽度 (GU),粗度 (Ra),颜色 (L*a*b*) 和维克斯微硬度 (VHN).
- 扫描电子显微镜 (SEM) 检查了磨损的表面.
主要成果:
- 所有基于树脂的材料在磨损后显示出光泽降低和粗度增加.
- 二氧化 (ILS) 呈现出最高光泽度和最低粗度;GFL显示相反.
- 树脂复合材料中较大的填充颗粒与较低的粗度和更高的微硬度相关.
结论:
- 牙刷磨损会对基于树脂的牙材料的表面性能产生负面影响.
- 填充剂颗粒大小显著影响耐磨性和表面完整性.
- 树脂复合材料中较大的填充剂可以更好地抵抗磨损引起的粗.
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