van Dijken J W, Hörstedt P
Acta Odontol Scand. 1987 Apr;45(2):115-23. doi: 10.3109/00016358709098366.
The marginal adaptation to acid-etched enamel of a hybrid and a microfilled composite resin, placed with or without intermediate low-viscous resin, was investigated in vivo. Each of 37 patients received four class III test fillings, one with each filling technique. The evaluation was done with the use of SEM on replicas from the cavity margins, 1 week and 1 year after insertion of the fillings. The observed defects were marginal cracks or fractures, chip fractures, and enamel fractures. In the comparison of the size and volume of the marginal defects no significant differences were seen after 1 week between fillings of the same material placed with or without an intermediate resin. However, after 1 year the hybrid resin fillings with an intermediate resin showed significantly better adaptation than the ones without. No difference was found between the microfilled resin fillings. The hybrid resin fillings showed significantly better marginal adaptation than the microfilled resin fillings after 1 week. A further increase of the differences was observed after 1 year.
在体内研究了使用或不使用中间低粘度树脂放置的混合型和微填料复合树脂对酸蚀牙釉质的边缘适应性。37名患者每人接受了四类III型测试充填，每种充填技术各一种。在充填物植入后1周和1年，使用扫描电子显微镜对洞缘复制件进行评估。观察到的缺陷有边缘裂纹或骨折、碎片骨折和牙釉质骨折。在比较边缘缺陷的大小和体积时，放置或未放置中间树脂的相同材料充填物在1周后未观察到显著差异。然而，1年后，使用中间树脂的混合型树脂充填物比未使用的显示出明显更好的适应性。微填料树脂充填物之间未发现差异。混合型树脂充填物在1周后比微填料树脂充填物显示出明显更好的边缘适应性。1年后观察到差异进一步增大。
