Suzuki S, Cox C F, Leinfelder K F, Snuggs H M, Powell C S
Department of Restorative Dentistry, University of Alabama, School of Dentistry, Birmingham 35294-0007, USA.
Int J Periodontics Restorative Dent. 1995 Oct;15(5):482-95.
Most microfilled composite resins are relatively resistant to generalized wear; however, they commonly exhibit poor resistance to localized wear because of debonding of prepolymerized particles from the resin matrix. A copolymerized new composite resin, in which the filler particle trimethylolpropane-trimethacrylate is chemically bonded to the resin matrix, is evaluated. Epic-TMPT was subjected to both generalized and localized wear tests that revealed that its wear resistance was higher than that of other composite resin systems. Epic-TMPT in posterior occlusal cavities showed less than 8 microns of wear for each restoration, 1 year after placement. Placement of Epic-TMPT into large anterior abfraction lesions without mechanical retention, with surface etching, and subject to severe traumatic occlusion resulted in 87% retention 1 year after placement. In vivo usage biocompatibility tests demonstrated no pulpal irritation or inflammation when Epic-TMPT was placed on vital dentin of crown preparations with complete enamel removal.
大多数微填料复合树脂相对耐全面磨损；然而，由于预聚合颗粒与树脂基质脱粘，它们通常表现出对局部磨损的抵抗力较差。评估了一种共聚新型复合树脂，其中填料颗粒三羟甲基丙烷三甲基丙烯酸酯化学键合到树脂基质上。对Epic-TMPT进行了全面和局部磨损测试，结果表明其耐磨性高于其他复合树脂系统。放置1年后，后牙咬合面窝洞中的Epic-TMPT每次修复的磨损小于8微米。将Epic-TMPT放置在没有机械固位的大型前牙牙体楔状缺损病变中，进行表面酸蚀，并承受严重的创伤性咬合，放置1年后保留率为87%。体内使用生物相容性测试表明，当Epic-TMPT放置在完全去除釉质的冠修复体的活髓牙本质上时，没有引起牙髓刺激或炎症。
