新型亲水抗菌硅橡胶口腔印模材料的制备及性能研究

打开文本图片集

中图分类号：TQ333.93 文献标志码：A文章编号：1001-5922（2026）03-0638-04

Preparation and performance study of a new hydrophilic antibacterial silicone rubber dental impression material

XIAOHuidan（Yibin Health School of Sichuan Province，Yibin 644OOO，Sichuan China）

Abstract：Basedon the clinical demand for high-precision impressions，this study designed a two-component matrix based on the vinyl silicone oil/MQ resin cros-linking system，carried out hydrophilicmodification with polyethermodified siliconeoil，andpreparedanantibacterialfillrof iodinatedquaternaryammoniumsalt-functionalized nanoSiO2 . It also analyzedmethods including KH570 coupling treatment，three-rollhigh-shear dispersion，FTIR structural characterization and ISO standard performance testing，and proposed a technical measure of gradient introduction of surface-modified nano-fillers with a content of 0%～5% into the hydrophilic silicone rubber matrix.The results showed that when the filler content was 4% and above，there were no significant differences in the tensile strength， tear strength and elongation at break of the material compared with the commercial Aquasil Ultra （ P>0.05 ）；the static contact angle was lower than 70∘ with an attenuation rate of less than 5% within 120 s，and the complete replication rate of 20μm detail lines reached 100% ，with a substantial improvement in antibacterial rate.When the filler content was 5% ，the mechanical properties decreased due to the agglomeration effect.

Key words：silicone rubber;impression material;hydrophilicity;antibacterial property ;inorganic filer

当前临床主流加成型硅橡胶印模材料虽然具备高撕裂强度、低线性收缩率、优异弹性恢复率，但其表面润湿性相对较低，导致在湿润口腔环境中润湿性不足，难以完整复制龈沟、预备体边缘等微细结构，严重影响修复体密合度，且材料缺乏抗菌活性，易吸附链球菌、白念珠菌等口腔致病性微生物，成为潜在交叉感染媒介[]。（剩余5566字）