Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
Department of Operative Dentistry, University of Iowa, College of Dentistry, Iowa City, IA, USA.
Eur J Oral Sci. 2021 Oct;129(5):e12799. doi: 10.1111/eos.12799. Epub 2021 May 31.
The purpose of this study was to evaluate the bonding and wear properties of self-adhesive flowable restorative materials. Five self-adhesive flowable restorative materials were used. The study parameters were: (i) shear bond strengths; (ii) microleakage; (iii) occlusal wear; and (iv) qualitative evaluation of the bonding interface. The range of shear bond strengths of the materials was as follows: 7.4-12.2 MPa to ground enamel, 22.5-32.5 MPa to etched enamel, and 1.3-4.2 MPa to dentin. The microleakage scores of the materials did not show any statistically significant differences regardless of the presence or absence of etching. The wear facets on the materials showed 0.099-0.447 mm of volume loss and 148.6-365.3 µm maximum depth, with statistically significant differences between materials. Scanning electron microscopic images of the interfaces of the materials showed good adaptation regardless of substrate. The bonding and wear properties of self-adhesive flowable restorative materials were still limited and showed lower values than previously reported results for nanofilled composites with an adhesive system. Selective enamel etching can improve the bonding performance of these materials.
本研究旨在评估自酸蚀流动树脂的粘结和耐磨性能。使用了五种自酸蚀流动树脂。研究参数包括：（i）剪切粘结强度；（ii）微渗漏；（iii）咬合磨损；和（iv）粘结界面的定性评估。材料的剪切粘结强度范围如下：釉质表面为 7.4-12.2MPa，酸蚀釉质表面为 22.5-32.5MPa，牙本质表面为 1.3-4.2MPa。无论是否酸蚀，材料的微渗漏评分均无统计学差异。材料的磨损面显示 0.099-0.447mm3 的体积损失和 148.6-365.3µm 的最大深度，材料之间存在统计学差异。材料界面的扫描电子显微镜图像显示，无论基底如何，均具有良好的适应性。自酸蚀流动树脂的粘结和耐磨性能仍然有限，与具有粘结系统的纳米复合树脂的先前报道结果相比，其值较低。选择性酸蚀釉质可以提高这些材料的粘结性能。
