刘亚男,刘思思,王立凯,王海锋.冷热循环对CAD/CAM树脂陶瓷复合材料表面粗糙度及形貌的影响[J].口腔材料器械杂志,2022,31(3):158-162. |
冷热循环对CAD/CAM树脂陶瓷复合材料表面粗糙度及形貌的影响 |
Effect of thermal cycling on surface roughness and topography of CAD/CAM resin ceramic composites |
投稿时间:2022-01-26 修订日期:2022-06-08 |
DOI:10.11752/j.kqcl.2022.03.02 |
中文关键词: CAD/CAM树脂陶瓷复合材料 冷热循环 表面粗糙度 扫描电子显微镜 |
英文关键词:CAD/CAM resin ceramic composites Thermal cycling Surface roughness Scanning electron microscopy |
基金项目:中国康复研究中心青年基金课题(编号:2019zx-Q6) |
作者 | 单位 | E-mail | 刘亚男 | 首都医科大学康复医学院, 中国康复研究中心, 北京博爱医院口腔科, 北京 100068 | | 刘思思 | 首都医科大学康复医学院, 中国康复研究中心, 北京博爱医院口腔科, 北京 100068 | | 王立凯 | 首都医科大学康复医学院, 中国康复研究中心, 北京博爱医院口腔科, 北京 100068 | | 王海锋 | 首都医科大学康复医学院, 中国康复研究中心, 北京博爱医院口腔科, 北京 100068 | wanghaifeng98@163.com |
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中文摘要: |
目的 研究冷热循环对CAD/CAM树脂陶瓷复合材料表面粗糙度及形貌的影响。方法 以树脂陶瓷复合材料LU(Lava Ultimate),CE(Cerasmart),HY(Hyramic润瓷),VE(Vita Enamic)为实验组,以长石质玻璃陶瓷VM(Vita Mark II)为对照组,分别在抛光即刻和经10 000次冷热循环后(冷热循环仪设置高温55℃,低温5℃,浸水时间为30s),测量表面粗糙度Ra并进行统计学分析,扫描电子显微镜(SEM)观测试件表面形貌。结果 在抛光即刻,LU、CE、HY和VE组的Ra值在0.095~0.106 μm之间,组间差异均无统计学意义(P > 0.05)。VM组Ra值最小,为(0.054±0.014) μm,与其他4组相比差异具有统计学意义(P < 0.05)。经冷热循环后,各组材料Ra值均增大,但与抛光即刻相比差异无统计学意义(P > 0.05)。老化后,VM组Ra值仍小于其他4组,差异具有统计学意义(P < 0.05)。SEM下表面形貌无明显变化。结论 经冷热循环后,CAD/CAM树脂陶瓷复合材料和玻璃陶瓷表面微结构均较稳定。 |
英文摘要: |
Objective The aim of this study was to investigate the influence of thermal cycling on the surface roughness and topography of CAD/CAM resin ceramic composites. Methods Four kinds of CAD/CAM resin ceramic composites, LU (Lava Ultimate), CE (Cerasmart), HY (Hyramic), VE (Vita Enamic), and a feldspathic ceramic VM (Vita Mark II) were used for this study. The surface roughness of these materials were measured after polished immediately and after thermal cycling for 10 000 times (the high temperature was 55℃, the low temperature was 5℃, and the immersion time was 30s), and changes of microstructure were observed under scanning electron microscopy (SEM). The data were statistically analyzed. Results LU, CE, HY and VE exhibited statistically similar surface roughness values between 0.095~0.106 μm (P>0.05), VM exhibited significantly lower surface roughness values(0.054±0.014 μm) than the other groups (P<0.05). After 10 000 thermocycles, surface roughness values did not change significantly for all materials (P>0.05). No obvious change of surface topography was observed under SEM. Conclusion The surface microstructure of CAD/CAM resin ceramic composites and feldspathic ceramic were stable after thermal cycling. |
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