摘要
目的探讨多次烧结对Cercon全瓷饰面瓷磨损性能的影响。方法采用体外实验模拟口腔环境,观察多次烧结后Cercon饰面瓷的磨损行为。实验中测量磨斑宽度以比较磨斑大小;采用扫描电镜(SEM)和原子力显微镜(AFM)观察磨斑形貌。结果随着烧结次数的增加,Cercon饰面瓷磨斑增大;磨斑宽度和烧结次数间存在着正相关(P<0.01);磨斑差异具有统计学意义(P<0.05)。SEM和AFM观察结果发现,随着烧结次数增多,犁沟减少,组织缺隙明显。结论多次烧结可以降低Cercon全瓷饰面瓷抗磨损性能,磨损模式有向严重磨损发展的趋势。
Objective To investigate the influence of multiple sintering on wear behavior of Cercon veneering ceramic. Methods Samples were fabricated according to the manufacture＇s requirement for different sintering times （1, 3, 5, 7 times）. The wear test was operated with a modified MM-200 friction and wear machine in vitro. The wear scars were characterized by scanning electron microscope（SEM） and atomic force microscopy（AFM）. Results With the sintering times increasing, the wear scar width became larger. The correlation was significant at the 0.01 level. Significant difference was observed in wear scar width among different samples（P0.05）. SEM and AFM results showed that veneering ceramic wear facets demonstrated grooves characteristic of abrasive wear. Conclusion Multiple sintering can decrease the wear ability of Cercon veneer, and the wear pattern has the tendency to severe wear.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2010年第2期211-213,共3页
West China Journal of Stomatology
基金
湖南省科技厅基金资助项目(2009JT3046)
关键词
磨损
饰面瓷
烧结
wear
veneering ceramic
sintering
作者简介
高清平（1972-），女，湖南人，副教授，博士
【通讯作者】巢永烈，Tel：028-85503570
