Cardash H S, Baharav H, Pilo R, Ben-Amar A
Section of Oral Rehabilitation, Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Israel.
J Prosthet Dent. 1993 Jun;69(6):620-3. doi: 10.1016/0022-3913(93)90293-w.
Visible light- and dual-curing composite resin luting cements were cured under porcelain disks of different colors to examine the effect of porcelain color on surface hardness. Knoop microhardness measurements were made at exposure times of 48, 72, and 120 seconds. Higher levels of hardness were obtained with dual-cured resin. Visible light-cured resin irradiated through colored porcelain required more prolonged exposure times to reach a degree of hardness approaching that of dual-cure resin. From the standpoint of microhardness, dual-cured composite resin is preferred for luting porcelain restorations of > or = 2 mm thickness.
将可见光固化和双重固化复合树脂粘结水门汀在不同颜色的瓷盘下固化，以研究瓷颜色对表面硬度的影响。在48、72和120秒的曝光时间下进行努氏显微硬度测量。双重固化树脂获得了更高的硬度水平。通过有色瓷照射的可见光固化树脂需要更长的曝光时间才能达到接近双重固化树脂的硬度程度。从显微硬度的角度来看，对于厚度≥2mm的瓷修复体粘结，双重固化复合树脂是首选。
