生物玻璃填充牙科复合树脂材料的制备及其性能  

Preparation and property of bioglass ceramics filled dental resins

作　　者：郑治[1,2] 黄伯云[1] 向其军[1] 谭彦妮[1] 刘咏[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083 [2]中南大学湘雅三医院,湖南长沙410013

出　　处：《中南大学学报（自然科学版）》2009年第1期94-98,共5页Journal of Central South University:Science and Technology

基　　金：国家“十五”科技攻关项目(2003BA310A31)

摘　　要：通过光固化的方法制备以磷灰石玻璃陶瓷和气相二氧化硅为无机填料的牙科复合树脂。采用扫描电镜/能谱仪(SEM/EDS)对复合材料的微观形貌进行分析,测量复合材料的三点抗弯强度。采用体外模拟体液(Simulated body fluid,SBF)浸泡法测试材料的生物活性。研究结果表明:材料的抗弯强度达到(137±10)MPa,能够满足牙齿修复的力学性能要求;材料在SBF中浸泡3d后,在表面形成矿化的碳酸磷灰石晶体层,表明材料具有较强的生物活性,可加快该材料植入人体后与骨的结合,并有利于龋齿的修复愈合。Apaptite glass-ceramics and gaseous silica were used to fill light-cured dental resins. By using SEM/EDS, bending test and in vitro experiment, the microstructure, mechanical behavior and bioactivity of the composite were studied. The results show that the bending strength of the dental resin is （137±10） MPa, which meets the requirements for dental restoration. After immersion in SBF for 3d, there is a mineralized carbonyl apatite layer formed on the material surface, indicating that the dental resin has a high bioactivity and has a good bonding to human bones. The dental resins filled with bioglass-ceramics and gaseous silica is promising in restoration of dental hard tissues.

关 键 词：磷灰石 无机填料 树脂 牙齿 生物活性 

分 类 号：R783.1[医药卫生—口腔医学] TQ325[医药卫生—临床医学]