Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
Department of Comprehensive Dentistry and Clinical Education, Nihon University School of Dentistry, Tokyo, Japan.
Eur J Oral Sci. 2022 Jun;130(3):e12868. doi: 10.1111/eos.12868. Epub 2022 Apr 26.
This study investigated the effect of the bonding agent application method on the dentin bond durability of a two-step adhesive utilizing a universal-adhesive-derived primer. The bonding durability of a universal adhesive was compared with those of two conventional two-step adhesives by shear bond strength testing after thermal cycling. The primer was applied (with or without phosphoric acid pre-etching), and the specimens were divided into three groups based on the bonding agent application method used as follows: (i) strong air-flow application, (ii) gentle air-flow application, and (iii) gentle air-flow + second bonding application. The shear bond strength was determined after thermal cycling. All the factors (bonding agent application method, adhesive system, and storage condition) significantly influenced the dentin shear bond strength both with and without phosphoric acid pre-etching. The specimens exposed to gentle air-flow showed a higher shear bond strength than did those exposed to strong air-flow and gentle air-flow + second bonding. The bond durability of the tested adhesive systems was influenced by the bonding agent application method, and this trend was material dependent. The G2-Bond Universal exhibited the same or greater dentin bond durability to the other two-step adhesive systems.
本研究探讨了在两步粘接剂中使用通用型底胶时，粘接剂的应用方法对牙本质粘接耐久性的影响。通过热循环后的剪切粘接强度测试，比较了通用型粘接剂与两种传统两步粘接剂的粘接耐久性。采用磷酸酸蚀预处理（有/无）和（i）强气流应用、（ii）轻气流应用、（iii）轻气流+二次粘接剂应用这三种不同的粘接剂应用方法，对试件进行分组。在热循环后测定剪切粘接强度。所有因素（粘接剂应用方法、粘接系统和储存条件）都显著影响了磷酸酸蚀预处理和无磷酸酸蚀预处理的牙本质剪切粘接强度。与强气流和轻气流+二次粘接剂应用相比，轻气流应用的试件显示出更高的剪切粘接强度。测试的粘接系统的粘接耐久性受粘接剂应用方法的影响，这种趋势与材料有关。G2-Bond Universal 与其他两种两步粘接系统具有相同或更高的牙本质粘接耐久性。
