Schulein T M, Boyer D B, Chalkley Y
J Biomed Mater Res. 1984 Sep;18(7):789-96. doi: 10.1002/jbm.820180709.
The bond strength of visible light-activated composites to etched enamel was measured as a function of exposure time. Studies have shown that the bottom surface may not be as hard as the top after customary cure times. Therefore this study also measured hardness and related it to enamel bonding. Plexiglas molds were used to simulate extracoronal applications where light is not attenuated by enamel. Bond strength and hardness of the bottom surfaces reached maximum values after the same exposure times with two of the three composites. More exposure time than normally recommended by manufacturers was needed to obtain maximum bond strength to enamel.
测量了可见光激活复合材料与酸蚀牙釉质的粘结强度与照射时间的关系。研究表明，在常规固化时间后，底部表面可能不如顶部坚硬。因此，本研究还测量了硬度，并将其与牙釉质粘结相关联。使用有机玻璃模具模拟冠外应用，其中光线不会被牙釉质衰减。三种复合材料中的两种在相同照射时间后，底部表面的粘结强度和硬度达到最大值。需要比制造商通常推荐的更多照射时间才能获得与牙釉质的最大粘结强度。
