新型钙镁磷酸复合材料理化机械性能的初步评价  

Mechanical and chemical properties of novel calcium-magnesium phosphate cements

作　　者：沈晴昳[1] 李恺[2] 李国强[1] SHEN Qingyi LI Kai LI Guoqiang(Department of Prosthodontics, Shanghai Stomatological Disease Center, Shanghai 200031, China)

机构地区：[1]上海市口腔病防治院复旦大学附属上海市口腔医院修复科,上海200031 [2]中国科学院上海硅酸盐研究所无机涂层重点实验室,上海200050

出　　处：《口腔医学》2016年第10期865-869,共5页Stomatology

基　　金：国家自然科学基金资助项目(81300917);上海市科学技术委员会科研基金资助项目(12ZR1427100)

摘　　要：目的研究新型磷酸钙-磷酸镁水门汀(CMPCs)的理化机械性能。方法采用X射线衍射(XRD)、扫描电镜(SEM)分析主要物相组成,研究比较材料不同组成对固化时间、抗压强度、降解率的影响。结果 XRD、SEM分析显示,CMPCs主要包含Ca_3(PO_4)_2、Mg_3(PO_4)_2、HA以及少量MgO。随着磷酸镁水门汀含量的增加,CMPCs的固化时间缩短,抗压强度提高,降解率升高。结论 CMPCs理化机械性能优良,作为齿科修复材料具有深入研究的价值。Objective To study the mechanical and chemical properties of novel calciummagnesium phosphate cements（ CMPCs） . Methods Components of the CMPCs were analyzed by XRD and SEM. The physicochemical properties of the CMPCs were investigated, and the effects of different components on setting time, compressive strength, rate of degradation were studied. Results According to the analysis of XRD and SEM, CMPCs were composed of Ca3（ PO4 ） 2 , Mg3（ PO4 ） 2 and HA, and a small amount of unreacted MgO was also observed. It showed that with the increasing amount the CMPCs exhibited shorter setting time and higher compressive strength than the CPC. In addition, CMPCs showed significantly improved degradability compared with the CPC in SBF. Conclusion CMPCs possess a significant clinical advantage over CPC, and it might have the value of indepth study as dental restorative material.

关 键 词：磷酸钙水门汀 磷酸镁水门汀 固化时间 抗压强度 降解 

分 类 号：R783.1[医药卫生—口腔医学]