纳米复合树脂牙与普通树脂牙显微硬度的对比研究

A comporative study on the micro hardness of resin and nano- composite resinteeth

目的目前临床上常用的普通树脂牙、纳米树脂牙和自研纳米人工牙显微硬度的对比分析研究。方法用动态超显微硬度仪对试件进行显微硬度测试。结果经动态超显微硬度仪测试,目前临床常用的几种复合树脂牙的维氏硬度分别是:427.67Mpa、469.67Mpa、706.33Mpa、666.33Mpa(P<0.05),我们研制的纳米树脂牙硬度为577.67Mpa。结论研制的人工牙显微硬度优于普通树脂牙,但与塑钢牙、纳米牙相比,还存在一定差距。

Objective To evaluate the micro hardness of five kinds of composite resin teeth, including common composite resin teeth and Nano- composite resin teeth. Methods Micro hardness of five dinds of composite resin teeth were measured with Dynamic Ultra Mico hardness Tester. Results The new nano - composite resin teeth＇s Vickers hardness was 577.67Mpa, while the Vickers hardness of other four kinds of composite resin teeth were 427.67Mpa, 469.67Mpa, 706.33Mpa, 666.33Mpa respectively. Conclusion The micro hardness of the new material is better than common resin teeth, but not as hard as another two composite resin teeth of SHOFU.