Sugimura Runa, Tsujimoto Akimasa, Hosoya Yumiko, Fischer Nicholas G, Barkmeier Wayne W, Takamizawa Toshiki, Latta Mark A, Miyazaki Masashi
Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan,
Am J Dent. 2019 Feb;32(1):33-38.
To evaluate whether surface moisture would influence the bonding effectiveness of universal adhesives in etch-and-rinse mode.
All-Bond Universal (AB), G-Premio Bond (GP) Prime&Bond Active (PB) and Scotchbond Universal Adhesive (SU) were evaluated. Shear bond strengths after 24 hours and 10,000 thermal cycles of universal adhesives to moist and dry enamel and dentin in etch-and-rinse mode were determined. Scanning electron microscopy observations of the adhesive interfaces were conducted.
The bond durability of universal adhesive to dentin in etch-and-rinse mode was influenced by the surface moisture, unlike bond durability to enamel. The bond durability of AB and GP, but not PB and SU, to dentin in etch-and-rinse mode was different depending on the surface moisture. Surface moisture did not influence the thicknesses of the adhesive or hybrid layer of resin-dentin interfaces, but the length of resin tags in the moist group was longer than in the dry group.
Some universal adhesives, with the addition of specific components and optimization of water content, can achieve stable bonds regardless of surface moisture, but the surface moisture of dentin, although not enamel, is still a significant factor for universal adhesive bonding in etch-and rinse mode.
评估表面湿度是否会影响通用型粘结剂在酸蚀冲洗模式下的粘结效果。
对全效粘结剂（AB）、G-Premio Bond（GP）、Prime&Bond Active（PB）和Scotchbond通用粘结剂（SU）进行评估。测定通用型粘结剂在酸蚀冲洗模式下与湿润和干燥的釉质及牙本质粘结24小时及10000次热循环后的剪切粘结强度。对粘结界面进行扫描电子显微镜观察。
与釉质不同，通用型粘结剂在酸蚀冲洗模式下与牙本质的粘结耐久性受表面湿度影响。在酸蚀冲洗模式下，AB和GP与牙本质的粘结耐久性因表面湿度而异，而PB和SU则不受影响。表面湿度不影响树脂-牙本质界面粘结剂或混合层的厚度，但湿润组树脂突的长度比干燥组长。
一些通用型粘结剂通过添加特定成分和优化含水量，无论表面湿度如何都能实现稳定粘结，但牙本质的表面湿度（而非釉质）仍是酸蚀冲洗模式下通用型粘结剂粘结的重要因素。
