摘要
目的体外测定8种复合树脂的体积磨损量和硬度,评价其耐磨耗性能。方法选择Durafill VS、Filtek A110、Charisma、Ceram-X、Filtek Z350、FS-2、Filtek P60和Tetric Ceram HB 8种复合树脂,分别制备8mm×6mm×2mm的树脂片,并用自凝树脂包埋,测定表面硬度(维氏)。将试样固定在往复滑动球-片式磨耗试验机上,以萤石粉糊剂作为磨耗介质,磨耗3万次后用三维形貌扫描仪测定复合树脂表面磨痕的体积,统计学分析复合树脂的硬度与其体积磨损量的相关性及各个复合树脂体积间磨损量的差异,SEM观察分析磨损面。结果 8种复合树脂的硬度顺序为:P60≈Z350>A110≈Tetric HB>FS-2≈Ceram-X>Charisma>Durafill。Z350的磨损量最小(0.68±0.05)mm3,其次是P60(1.11±0.06)mm3,随后是Charisma(1.50±0.17)mm3、Durafill(1.64±0.49)mm3、FS-2(1.75±0.32)mm3及A110(1.84±0.37)mm3,Ceram-X(2.09±0.36)mm3和Tetric HB(2.56±0.48)mm3的磨损量较大。所测复合树脂的硬度与其体积磨损量之间无相关性(r=-0.55)。结论复合树脂的耐磨耗性能与其硬度无关,而与不同材料品牌关系密切。
Objective To investigate the abrasion resistance of eight composite resins by detection of hardness and worn surfaces’ morphologies. Methods 8 composite resins including Durafill VS,Filtek A110,Charisma,Ceram-X,Filtek Z350,FS-2,Filtek P60,Tetric Ceram HB were chosen. Disc-shaped specimens（8mm×6mm×2mm） were fabricated and their Vickers hardness was tested. Then the specimens were mounted in a ball-on-disc wear testing machine and abraded with the third-body media（fluorite slurry）. Volume loss（n=8） was determined by the three-dimensional morphology of scanner after 30 k sliding cycles, and analyzed using oneway ANOVA（α=0.05）. The worn surfaces were examined with SEM. Results The hardness of 8 composite resins as following： P60？Z350〉A110？Tetric HB〉FS-2？Ceram-X〉Charisma〉 Durafill. Z350, which showed the lowest wear volume loss（0.68±0.05） mm3, followed by P60（1.11±0.06） mm3, Charisma（1.50±0.17） mm3, Durafill（1.64±0.49） mm3, FS-2（1.75±0.32） mm3 and 110（1.84±0.37） mm3. Ceram-X（2.09±0.36） mm3 and Tetric HB（2.56±0.48） mm3 presented the highest wear volume loss. No correlation existed between volume loss and Vickers hardness（r =-0.55）. Conclusion The wear resistance of the eight composite resins correlated to their brands rather than their hardness.
出处
《口腔材料器械杂志》
2014年第4期173-180,共8页
Chinese Journal of Dental Materials and Devices
基金
国家自然科学基金项目(81171002)
关键词
复合树脂
硬度
耐磨耗
体积磨损量
Composite resin Hardness Wear resistance Volume loss
