齿科常见修复材料微观结构与氧化锆磨损量之间的关系  

The Wear of Different Dental Crown Restorative Materials Opposed to Zirconia Ceramic

作　　者：刘晶莹[1] 郭长军[2] 刘晓明[1] 

机构地区：[1]天津市口腔医院修复二科,天津300041 [2]河北医科大学口腔医院修复科,河北石家庄050017

出　　处：《武警医学院学报》2012年第1期30-32,共3页Acta Academiae Medicinae CPAPF

摘　　要：【目的】通过体外实验,探讨齿科不同牙冠修复材料微观结构与氧化锆磨损量的关系。【方法】采用针-盘式二体磨耗机,以氧化锆为对磨物,电镜观察义获嘉陶瓷、低温水热陶瓷、纳米陶瓷和金钯合金4种牙科常用冠修复材料磨耗面的微观结构,以及称量测定氧化锆的质量损失。【结果】电镜下金钯合金磨耗面呈均质状结构,低温水热陶瓷磨耗后气孔少见,形状规则,无大的裂纹存在,纳米陶瓷磨耗后可见细小裂隙,偶见小气孔,形状规则,义获嘉陶磨耗面粗糙,可见磨损凹陷沟窝及细裂纹,形状不规则。氧化锆与各种材料对磨后质量损失由大到小分别为义获嘉陶瓷组、低温水热陶瓷组、纳米陶瓷组、金钯合金组,且各组间均有显著差异(P<0.05)。【结论】修复材料的微观结构是影响氧化锆耐磨性能的重要因素之一。【Objective】The purpose of this study was to evaluate the effects of microstructure to the wear of different kinds of restorative crown materials used in clinical and zirconia ceramic.【Methods】 Specimens were evaluated at a x50 and x500 magnification by a scanning electron microscope.The weight loss of opposing zirconia ceramic was measured to compare the wear properties.【Results】The results of scanning electron micrograph（SEM） of different materials were different.The weight loss of zirconia ceramic caused by four materials from small to large were gold alloy,nanoceramic,hydrothermal low-fusing ceramic,and D.SIGN（P〈0.05）.【Conclusion】The microstructure of the restorative material is one of the important factors that influences the zirconia ceramic wear properties.

关 键 词：修复材料 微观结构 氧化锆陶瓷 

分 类 号：R783.4[医药卫生—口腔医学]