Knobloch Lisa A, Gailey David, Azer Shereen, Johnston William M, Clelland Nancy, Kerby Ronald E
The Ohio State University College of Dentistry, Columbus, Ohio, USA.
J Prosthet Dent. 2007 Apr;97(4):216-22. doi: 10.1016/j.prosdent.2007.02.013.
One-bottle self-etching adhesives have been introduced that combine the etchant, primer, and adhesive into a single bottle in an effort to reduce the number of bonding steps. Limited research has been conducted comparing the efficacy of 1-bottle and 2-bottle self-etching adhesives.
This investigation evaluated the microtensile bond strength (MTBS) of 3 one-step self-etching adhesives, 2 two-step self-etching adhesives, and a total-etch adhesive. A secondary objective was to evaluate the effect of an intermediary layer of elastic resin on the MTBS of 2 of the self-etching adhesives.
The MTBS of 3 one-step self-etching adhesives (G-Bond, iBond, and Clearfil S(3)), 2 two-step self-etching adhesives (Clearfil SE and Optibond Solo Plus Self-Etch), and a total-etch adhesive (Prime & Bond NT) was evaluated. Microtensile bond strength (MPa) was determined using composite resin (Herculite XRV) cylinders bonded to the dentin surface of human third molars (n=24) using 6 bonding agents. Each bonded tooth specimen was longitudinally sectioned to produce bar-shaped specimens with a square cross-sectional nominal bond area of 1.4 mm(2) (n=20). Bonded specimens were stored in distilled water at 37 degrees C +/- 2 degrees C for 72 hours, during which time they were subjected to thermal cycling (1500 cycles, in water baths of 5 degrees C and 55 degrees C, for a dwell time of 30 seconds). Testing was performed on a universal testing machine at a crosshead speed of 1.0 mm/min. One-way ANOVA, Ryan-Einot-Gabriel-Welsh multiple range test, and Wald chi square test, each using an overall alpha=.05, were performed on all data. Low-power (x20) microscopic examination of the bond failure was observed for each specimen.
The 1-way ANOVA (P<.001) and Ryan-Einot-Gabriel-Welsh multiple range test (P<.05) showed significant differences between the mean MTBS values for several of the bonding agents tested. The Wald chi square test of the Weibull distribution showed significant differences between adhesives (P<.001).
Of the bonding agents tested, significantly higher MTBS was obtained with the total-etch 2-stage adhesive. The results of this study suggest that there are similar bond strengths between the 1- and 2-bottle self-etch adhesives.
单瓶自酸蚀粘结剂已被推出，它将酸蚀剂、底漆和粘结剂组合在一个瓶子中，以减少粘结步骤。关于比较单瓶和双瓶自酸蚀粘结剂功效的研究有限。
本研究评估了3种一步法自酸蚀粘结剂、2种两步法自酸蚀粘结剂和一种全酸蚀粘结剂的微拉伸粘结强度（MTBS）。第二个目的是评估弹性树脂中间层对2种自酸蚀粘结剂MTBS的影响。
评估了3种一步法自酸蚀粘结剂（G-Bond、iBond和Clearfil S(3)）、2种两步法自酸蚀粘结剂（Clearfil SE和Optibond Solo Plus Self-Etch）和一种全酸蚀粘结剂（Prime & Bond NT）的MTBS。使用复合树脂（Herculite XRV）圆柱体粘结到人类第三磨牙的牙本质表面（n = 24），使用6种粘结剂，测定微拉伸粘结强度（MPa）。每个粘结的牙齿标本纵向切片，制成方形横截面标称粘结面积为1.4平方毫米的条形标本（n = 20）。粘结标本在37摄氏度±2摄氏度的蒸馏水中储存72小时，在此期间进行热循环（1500次循环，在5摄氏度和55摄氏度的水浴中，保持时间为30秒）。在万能试验机上以1.0毫米/分钟的十字头速度进行测试。对所有数据进行单因素方差分析、Ryan-Einot-Gabriel-Welsh多重范围检验和Wald卡方检验，每个检验的总体显著性水平α = 0.05。对每个标本进行低倍（x20）显微镜下粘结失败的观察。
单因素方差分析（P < 0.001）和Ryan-Einot-Gabriel-Welsh多重范围检验（P < 0.05）表明，所测试的几种粘结剂的平均MTBS值之间存在显著差异。Weibull分布的Wald卡方检验表明粘结剂之间存在显著差异（P < 0.001）。
在所测试的粘结剂中，全酸蚀两步法粘结剂获得了显著更高的MTBS。本研究结果表明，单瓶和双瓶自酸蚀粘结剂之间的粘结强度相似。
