Ahmed Mohammed H, Yao Chenmin, Van Landuyt Kirsten, Peumans Marleen, Van Meerbeek Bart
J Adhes Dent. 2020;22(5):483-501. doi: 10.3290/j.jad.a45179.
Universal adhesives (UAs) are applied in 2-step etch-and-rinse (2-E&R) or 1-step self-etch (1-SE) mode. This study investigated whether three UAs could benefit from a highly filled extra bonding layer (EBL), turning them into 3-E&R and 2-SE UAs, respectively, thus also compensating for the commonly thin film thickness of UAs.
Microtensile bond strength (μTBS) to bur-cut dentin of Clearfil Universal Bond Quick (C-UBq, Kuraray Noritake), G-Premio Bond (G-PrB, GC) and Prime&Bond Active (P&Ba, Dentsply Sirona), applied in E&R and SE mode without/with the adhesive resin (EBL) of OptiBond FL (Opti-FL_ar, Kerr), was compared to that of the 3-E&Ra OptiBond FL (Opti-FL; Kerr), which was also employed in 2-SE mode. As a cross reference, the SE primer of Clearfil SE Bond 2 (Kuraray Noritake) was combined with Opti-FL_ar (C-SE2/Opti-FL) and again applied in 2-SE and 3-E&R mode. μTBS was measured after 1 month of water storage (37°C) and additional 25,000 and 50,000 thermocycles (TC). All μTBS were statistically analyzed using three different linear mixed-effects models with specific contrasts (p < 0.05).
Overall, the four parameters (adhesive, bonding mode, aging, EBL) significantly influenced μTBS. G-PrB and P&Ba benefited from EBL when applied in both E&R and SE bonding modes. In E&R mode, P&Ba generally revealed the highest µTBS; C-UBq presented an intermediate and G-PrB the lowest µTBS. No significant differences were found between different bonding modes. C-SE2/Opti-FL outperformed Opti-FL in 3-E&R and 2-SE_1 month/25k.
The overall benefit of EBL on the 1-month and TC-aged bonding efficacy differed for the different UAs tested.
通用型粘结剂（UAs）可采用两步酸蚀冲洗（2-E&R）或一步自酸蚀（1-SE）模式应用。本研究调查了三种UAs是否能受益于高填料的额外粘结层（EBL），分别将它们转变为3-E&R和2-SE UAs，从而也弥补了UAs通常较薄的薄膜厚度。
将可乐丽通用粘结剂快速型（C-UBq，可乐丽诺瑞特）、G-Premio Bond（G-PrB，GC）和Prime&Bond Active（P&Ba，登士柏西诺德）在有无OptiBond FL粘结树脂（Opti-FL_ar， Kerr）的情况下，以酸蚀冲洗和自酸蚀模式粘结到车针切割的牙本质上，其微拉伸粘结强度（μTBS）与3-E&R型OptiBond FL（Opti-FL；Kerr）进行比较，OptiBond FL也采用2-SE模式。作为交叉对照，可乐丽SE Bond 2（可乐丽诺瑞特）的自酸蚀底漆与Opti-FL_ar（C-SE2/Opti-FL）混合，并再次以2-SE和3-E&R模式应用。在37°C水储存1个月以及额外进行25000次和50000次热循环（TC）后测量μTBS。所有μTBS均使用三种不同的线性混合效应模型及特定对比进行统计分析（p<0.05）。
总体而言，四个参数（粘结剂、粘结模式、老化、EBL）对μTBS有显著影响。G-PrB和P&Ba在酸蚀冲洗和自酸蚀粘结模式下应用时受益于EBL。在酸蚀冲洗模式下，P&Ba通常显示出最高的µTBS；C-UBq处于中间水平，G-PrB最低。不同粘结模式之间未发现显著差异。C-SE2/Opti-FL在3-E&R和2-SE_1个月/25k时的表现优于Opti-FL。
对于所测试的不同UAs，EBL对1个月和经热循环老化后的粘结效果的总体益处有所不同。
