载银放射状介孔二氧化硅的制备及其在牙科树脂中的应用  

Silver Loaded Radial Mesoporous Silica:Preparation and Application in Dental Resins

作　　者：王月月 黄佳慧 孔红星 李怀珠 姚晓红[1] WANG Yueyue;HUANG Jiahui;KONG Hongxing;LI Huaizhu;YAO Xiaohong(School of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学材料科学与工程学院,太原030024

出　　处：《无机材料学报》2025年第1期77-83,共7页Journal of Inorganic Materials

基　　金：山西省自然科学基金(202203021221056)。

摘　　要：牙科树脂因美观、安全和容易操作等优势,已成为目前临床最常用的龋洞填充材料,但仍存在机械强度较低、抗菌性能不足等问题,导致使用寿命较短。本研究首先制备了放射状介孔二氧化硅(Radialmesoporoussilica,RMS)粉体材料,再将纳米银载入其多孔孔道中,得到载银放射状介孔二氧化硅(Ag-RMS)。将Ag-RMS与牙科树脂复合,研究其含量对牙科树脂抗菌性能、机械性能及其他理化性能的影响。结果表明, Ag-RMS可显著提高牙科树脂抗菌性能,Ag-RMS质量分数为5%时,对变形链球菌的抗菌率已达99.68%。牙科复合树脂机械强度随Ag-RMS含量增加而逐渐升高,质量分数为7%时,复合树脂弯曲强度比树脂基体高28.16%。而且,添加Ag-RMS不会对牙科树脂的聚合收缩率、单体转化率、光固化深度和表面亲疏水性等产生显著影响。本研究所制备的Ag-RMS可提高牙科树脂的抗菌和机械性能。Dental resins are currently the most commonly used filling materials for dental caries clinically due to their advantages of aesthetics,safety,and easy operation.However,their service life is limited because of their low mechanical strength and insufficient antibacterial activity.In this study,radial mesoporous silica was prepared firstly,and then loaded nanosilver into its porous channels to obtain silver loaded radial mesoporous silica(Ag-RMS).Effects of different contents of Ag-RMS on antibacterial,mechanical,and physicochemical properties of dental composite resins were studied.The results showed that Ag-RMS could significantly improve the antibacterial performance of composite resins,achieving an antibacterial rate of 99.68%against Streptococcus mutans when the addition amount of Ag-RMS was 5%(mass fraction).Mechanical strength of the composite resin gradually increased with the increase of Ag-RMS content.When the addition amount of Ag-RMS reached 7%(in mass),the flexural strength of composite resins was 28.16%higher than that of resin matrix.Moreover,the addition of Ag-RMS had almost no obvious effect on their polymerization shrinkage rate,monomer conversion rate,curing depth,and surface hydrophobicity.These results indicate that the prepared Ag-RMS in this study can improve the comprehensive performance of the novel composite resins.

关 键 词：牙科树脂 载银介孔二氧化硅 抗菌性能 机械性能 

分 类 号：TQ174[化学工程—陶瓷工业]