Levartovsky S, Kuyinu E, Georgescu M, Goldstein G R
Division of Restorative and Prosthodontic Sciences, Kriser Dental Center, New York University, New York.
J Prosthet Dent. 1994 Nov;72(5):481-5. doi: 10.1016/0022-3913(94)90118-x.
This study compared three mechanical properties of two recently introduced core materials, a light-activated glass ionomer cement (VariGlass VLC) and a fluoride-release dual cure composite resin (FluoroCore), with those of a conventional silver-reinforced glass-ionomer cement (Miracle Mix). Seventy-two samples (eight per product for each property) were prepared for testing diametral tensile strength, flexural strength, and compressive strength. The specimens were cured, stored for 24 hours at 37 degrees C in 100% humidity, and tested with the use of an Instron universal testing machine. The results of this study indicate that the diametral tensile strength, flexural strength, and compressive strength of the FluoroCore and VariGlass VLC materials were significantly higher than those of the conventional Miracle Mix. The values obtained with FluoroCore material were consistently higher than those obtained with VariGlass VLC material.
本研究比较了两种新推出的核心材料——一种光固化玻璃离子水门汀（VariGlass VLC）和一种释氟双固化复合树脂（FluoroCore）——与一种传统的银增强玻璃离子水门汀（Miracle Mix）的三种力学性能。制备了72个样本（每种性能的每种产品8个），用于测试径向拉伸强度、弯曲强度和抗压强度。样本固化后，在37摄氏度、100%湿度条件下储存24小时，然后使用英斯特朗万能试验机进行测试。本研究结果表明，FluoroCore和VariGlass VLC材料的径向拉伸强度、弯曲强度和抗压强度显著高于传统的Miracle Mix。FluoroCore材料获得的值始终高于VariGlass VLC材料获得的值。
