Eakle W S, Staninec M
University of California, San Francisco 94143-0758.
Quintessence Int. 1992 Jun;23(6):421-5.
The purpose of this study was to determine if bonding gold inlays to tooth structure with an adhesive resin cement would increase the fracture resistance of restored teeth. Extracted paired maxillary premolars were prepared for mesio-occlusodistal inlays, and the inlays were cast in type II gold. In one tooth of each pair, the inlay was sandblasted with aluminium oxide, tin plated, and cemented with an adhesive resin into the etched preparation. For the other (control) tooth in each pair, the inlay was sandblasted and then cemented into the preparation with zinc phosphate cement. The teeth were thermocycled and loaded until fracture. The teeth in the bonded group had a statistically significantly higher fracture resistance than did the teeth in the control group. Scanning electron microscopic examination revealed that failure in the bonded group occurred predominantly within the resin.
本研究的目的是确定用粘结性树脂水门汀将金嵌体粘结到牙体组织上是否会提高修复后牙齿的抗折性。提取成对的上颌前磨牙，制备近中-咬合-远中嵌体，并用Ⅱ型金铸造嵌体。在每对牙齿中的一颗上，将嵌体用氧化铝喷砂、镀锡，并用粘结性树脂粘结到酸蚀后的预备体中。对于每对中的另一颗（对照）牙齿，将嵌体喷砂，然后用磷酸锌水门汀粘结到预备体中。对牙齿进行热循环处理并加载直至折断。粘结组的牙齿抗折性在统计学上显著高于对照组。扫描电子显微镜检查显示，粘结组的折裂主要发生在树脂内。
