Labella R, Braden M, Deb S
Joint Department of Biomaterials Science, Eastman and London Hospital Dental Institutes, UK.
Biomaterials. 1994 Dec;15(15):1197-200. doi: 10.1016/0142-9612(94)90269-0.
Newly designed composite resins for dental applications have been studied. The matrix phases were based on 2,2 bis-4(2-hydroxy-3-methacryloyloxypropoxy)phenyl propane and a urethane dimethacrylate. Tetrahydrofurfuryl methacrylate was added as a diluent to both dimethacrylates in a proportion of 30 wt%. Heat-cured composite resins were obtained with filler weight fractions of 60% and 67%. After surface treating hydroxyapatite powder with a silane coupling agent, filler contents of 60%, 67% and 80% were employed. These materials were then evaluated for Young's modulus, flexural strength, diametral tensile strength and Vickers hardness. With the exception of Young's modulus, all mechanical properties of the tested materials were significantly improved when a silanized hydroxyapatite filler had been used.
已对新设计的牙科用复合树脂进行了研究。基体相基于2,2 - 双 - 4(2 - 羟基 - 3 - 甲基丙烯酰氧基丙氧基)苯基丙烷和一种聚氨酯二甲基丙烯酸酯。甲基丙烯酸四氢糠酯作为稀释剂以30 wt%的比例添加到两种二甲基丙烯酸酯中。获得了填料重量分数为60%和67%的热固化复合树脂。在用硅烷偶联剂对羟基磷灰石粉末进行表面处理后，使用了60%、67%和80%的填料含量。然后对这些材料进行杨氏模量、弯曲强度、径向拉伸强度和维氏硬度评估。除杨氏模量外，当使用硅烷化羟基磷灰石填料时，测试材料的所有机械性能均得到显著改善。
