无水硫酸钙晶须对义齿软衬材料机械性能的影响  

Effect of anhydrous calcium sulfate whisker on the mechanical function of soft denture liners

作　　者：高士军[1] 任国欣[1] 魏思怡[1] 初明慧 王冬霞[1] 候玉泽[1] 肖媛媛[1] 黄艳君[1] 姜家真[1] 

机构地区：[1]佳木斯大学附属第二医院修复二科,黑龙江省佳木斯市154004

出　　处：《中国组织工程研究》2015年第47期7624-7628,共5页Chinese Journal of Tissue Engineering Research

摘　　要：背景:由于义齿软衬材料自身理化性能的限制,近些年有人将晶须材料添加到软衬材料中,以增强其机械性能。目的:观察不同无水硫酸钙晶须添加量对自凝软衬垫机械性能的影响。方法:实验分6组,在自凝软衬材料中分别添加含量为0(对照)、1%、2%、3%、4%、5%的无水硫酸钙晶须,每组10枚试件,共60枚试件,检测其剪切黏结强度、邵氏硬度及拉伸强度。结果与结论:随着无水硫酸钙晶须添加量的不断增加,软衬材料的邵氏硬度不断升高,拉伸强度先升高后降低;当无水硫酸钙晶须添加量为3%时,软衬材料的黏结强度与拉伸强度最高。综合3项指标来看,当无水硫酸钙晶须添加量为3%时,软衬材料的机械性能最佳。表明无水硫酸钙晶须可影响自凝软衬垫的机械性能。BACKGROUND：Due to limitations of the physicochemical properties of soft denture liner material itself, whisker has been added in the soft lining material in recent years, so as to enhance its mechanical properties. OBJECTIVE：To investigate the effect of different additive amount of anhydrous calcium sulfate whisker on the mechanical function of self-curing soft denture liner. METHODS： There were six groups in this experiment. Anhydrous calcium sulfate whisker at the mass fraction of 0 （control）, 1%, 2%, 3%, 4%, 5% was respectively added into self-curing soft liner materials, 10 test specimens in each group, a total of 60 test specimens. The shear bond strength, Shore hardness and tensile strength were detected. RESULTS AND CONCLUSION： With the increasing amount of the anhydrous calcium sulfate whisker, the Shore hardness of the soft lining material was increased continuously, and the tensile strength was increased firstly and then reduced. When 3% anhydrous calcium sulfate whisker was added, the bond strength and tensile strength of soft lining material reached the peak. Taken together, the mechanical properties of the soft lining materials became perfect when 3% anhydrous calcium sulfate whisker was added. These results demonstrate that anhydrous calcium sulfate whisker may affect the mechanical properties of self-curing soft liner.

关 键 词：生物材料 口腔生物材料 无水硫酸钙晶须 聚甲基丙烯酸甲酯 义齿软衬材料 邵氏硬度 剪切黏结强度 拉伸强度 机械性能 

分 类 号：R318[医药卫生—生物医学工程]