Nagata K, Suzuki S, Nakabayashi N, Masuhara E
Shika Rikogaku Zasshi. 1979 Jul;20(51):151-4.
It had been required to improve mechanical properties of hard crown and bridge resins. We had pointed out that mixing of PMMA powder with crosslinking agents for fablication of crown or bridges was not suitable to get better materials. Several trials were taken place to eliminate the PMMA powder. Hydrophobic colloidal silica was a good candidate to replace PMMA. But it is required to improve handling properties. A mixing of monomers, Bis-GMA and triethylene glycol dimethacrylate, and the silica was polymerized and pulverized and then the powder was applied for the fablication. The mechanical properties did not change as direct application of colloidal silica.
一直以来都需要改善硬质牙冠和牙桥树脂的机械性能。我们已经指出，将聚甲基丙烯酸甲酯（PMMA）粉末与用于制作牙冠或牙桥的交联剂混合并不适合获得更好的材料。进行了几次尝试以去除PMMA粉末。疏水性胶体二氧化硅是替代PMMA的良好选择。但需要改善其操作性能。将单体双酚A-甲基丙烯酸缩水甘油酯（Bis-GMA）和二缩三乙二醇二甲基丙烯酸酯与二氧化硅混合进行聚合和粉碎，然后将该粉末用于制作。其机械性能与直接应用胶体二氧化硅时没有变化。
