Hinoura K, Miyazaki M, Onose H
Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo.
Am J Dent. 1991 Dec;4(6):273-6.
This study examined the relationship between the irradiation time of three light-cured resin composites and their bond strength to dentin using two adherend surfaces. The light-cured resin composite systems selected were: Scotchbond/Silux, Scotchbond 2/Silux, and Clearfil Photo Bond/Photo Clearfil A. The adherend surfaces selected were a flat dentin surface and a box-shaped cavity. The greatest bond strength for all resin systems was recorded using the longest irradiation time. The bond strengths increased with an elevated irradiation time. When comparing the flat surface and a box-shaped cavity, the bond strength of the box cavity was greater than the flat surface with similar conditions except for 20 and 30 seconds of Scotchbond and 30 seconds of Clearfil. The correlation between bond strength and irradiation was greater for the flat surface than for the box-shaped cavity. This implied that the bond strength of the box-shaped cavity may be more susceptible to polymerization shrinkage.
本研究使用两种被粘物表面，考察了三种光固化树脂复合材料的照射时间与其与牙本质的粘结强度之间的关系。所选用的光固化树脂复合体系为：Scotchbond/Silux、Scotchbond 2/Silux和Clearfil Photo Bond/Photo Clearfil A。所选用的被粘物表面为平坦的牙本质表面和盒状洞形。所有树脂体系在使用最长照射时间时记录到最大粘结强度。粘结强度随照射时间延长而增加。比较平坦表面和盒状洞形时，除Scotchbond的20秒和30秒以及Clearfil的30秒外，在相似条件下盒状洞形的粘结强度大于平坦表面。平坦表面的粘结强度与照射之间的相关性大于盒状洞形。这意味着盒状洞形的粘结强度可能更易受聚合收缩影响。
