添加四针状氧化锌晶须对复合树脂机械性能影响的实验研究  

Effects of tetrapod-like zinc oxide whisker incorporation on the mechanical properties of composite resin

作　　者：沈丽娟[1] 王艺臻[2] 陈吉华[1] 牛丽娜[1] 方明[1] 

机构地区：[1]第四军医大学口腔医学院,陕西西安710032 [2]第二军医大学长海医院口腔科,上海200433

出　　处：《牙体牙髓牙周病学杂志》2010年第1期39-42,共4页Chinese Journal of Conservative Dentistry

基　　金：陕西省攻关计划项目(2008K11-02)

摘　　要：目的:研究添加四针状氧化锌晶须(T-ZnOw)无机抗菌剂、载银无机抗菌剂对复合树脂机械性能的影响。方法:将T-ZnOw抗菌剂和载银无机抗菌剂分别按3%、5%、10%和1%、3%、5%的比例添加于一种化学固化的复合树脂中,测试复合材料的弯曲强度,抗压强度、径向拉伸强度的变化。结果:T-ZnOw抗菌剂在一定浓度范围内对复合树脂具有增强作用,当添加量为5%时,复合树脂的弯曲强度,抗压强度、径向拉伸强度分别提高了34.36%、14.42%、41.63%。载银无机抗菌剂不具有增强树脂的作用,当添加量为5%时,三种强度分别下降了17.97%、9.29%、19.47%。结论:T-ZnOw抗菌剂在赋予复合树脂材料较强的抗菌作用的同时,还能提高其机械强度,是制备抗菌性复合树脂的较优选择。AIM： To compare the effects of tetrapod-like zinc oxide whisker （T-ZnOw） antibacterial agent and a silver-based inorganic antibacterial agent incorporation on the mechanical properties of the composite resin. METHODS ： T-ZnOw antibacterial agent powder and a kind of silver-based inorganic antibacterial agent were incorporated into a self-curing composite resin at 3% , 5% or 10% and 1% , 3% or 5% , respectively. The flexural strength （FS）, compressive strength （CS） and diametral tensile strength （DTS） of the resin specimens were subsequently analyzed on a computercontrolled universal testing machine. RESULTS： Addition of low concentrations （3% and 5% ） of T-ZnOw antibacterial agent improved the mechanical properties of the resin in dose-dependence. In comparison with the control group A, 5% incorporation of T-ZnOw significantly increased the FS, CS and DFS of the composite resin by 38.36% , 14.42% and 41.63 respectively. On the contrary, silver-based inorganic antibacterial agent did not improve the mechanical properties of the composite resin. 5% incorporation of silver-based inorganic antibacterial agent significantly decreased the FS, CS and DFS of the composite resin by 17.97%, 9.29% and 19.47, respectively. CON CLUSION： Within certain concentrations, T-ZnOw antibacterial agent could significantly increase the mechanical properties of the composite resin. The most profound effect was observed to be 5% T-ZnOw antibacterial agent incorporation.

关 键 词：复合树脂 四针状氧化锌晶须 载银无机抗菌剂 机械性能 

分 类 号：R783.1[医药卫生—口腔医学]