Department of Restorative Sciences, University of Minnesota, Minneapolis, MN 55455, USA.
Oper Dent. 2013 May-Jun;38(3):267-74. doi: 10.2341/12-307-L. Epub 2012 Dec 4.
To study the effect of dentin age and adhesive composition on the microtensile dentin bond strengths (μTBS) of five dentin adhesives.
Sixty extracted caries-free human teeth were assigned to the appropriate age group: less than 21 years of age (<21), 21-40 years of age (21-40), and greater than 40 years of age (>40). For each age group, specimens were randomly divided into five dentin adhesives: (1) Adper Easy Bond (EB, 3M ESPE), a one-step self-etch adhesive; (2) Experimental Adper Easy Bond without the Vitrebond Co-polymer (CP) (EBnoCP, 3M ESPE); (3) Adper Single Bond Plus (SB, 3M ESPE), a two-step etch&rinse adhesive; (4) Experimental Adper Single Bond Plus without CP (SBnoCP, 3M ESPE); and (5) Adper Scotchbond Multi-Purpose (MP, 3M ESPE), a three-step etch&rinse adhesive, as the control group. Specimens were sectioned in X and Y directions and the resulting beams were tested to failure in tension mode at a crosshead speed of 1 mm/min. Statistical analysis was computed using t-test and two-way analysis of variance followed by Fisher least significant difference multiple comparison post hoc test at p < 0.05.
The highest mean μTBS values were obtained in the control group (MP) for all age groups. EB resulted in statistically similar mean μTBS compared to EBnoCP for all age groups: p = 0.538 for (<21); p = 0.974 for (21-40); and p = 0.909 for (>40). SB resulted in statistically higher mean μTBS than SBnoCP for all age groups [p<0.009 for (<21); p<0.028 for (21-40); and p<0.041 for (>40)]. MP, the control group, resulted in statistically lower mean μTBS when applied to the oldest age group (>40) compared to the youngest age group (<21), at p < 0.04. When means were pooled for the variable 'age group,' SB resulted in significantly higher mean μTBS than SBnoCP at p < 0.009, while EB resulted in statistically similar mean μTBS compared to EBnoCP (p=0.9). MP resulted in statistically higher mean μTBS than all other adhesives-SB (p<0.0001), SBnoCP (p<0.0001), EBnoCP (p<0.022), and EB (p<0.046).
The substrate age influenced the bonding ability of the three-step etch&rinse adhesive. The presence of a carboxylic-based polymer (CP) enhanced the bonding ability of the two-step etch&rinse adhesive.
研究牙本质年龄和胶粘剂组成对 5 种牙本质胶粘剂的微拉伸牙本质粘结强度（μTBS）的影响。
将 60 颗无龋的人离体牙分为<21 岁、21-40 岁和>40 岁 3 个年龄组。每个年龄组的样本又随机分为 5 个牙本质粘接剂组：（1）Adper Easy Bond（EB，3M ESPE），一步自酸蚀粘接剂；（2）不含 Vitrebond 共聚物的实验性 Adper Easy Bond（EBnoCP，3M ESPE）；（3）Adper Single Bond Plus（SB，3M ESPE），两步酸蚀-冲洗粘接剂；（4）不含 Vitrebond 共聚物的实验性 Adper Single Bond Plus（SBnoCP，3M ESPE）；（5）Adper Scotchbond Multi-Purpose（MP，3M ESPE），三步酸蚀-冲洗粘接剂，作为对照组。将样本沿 X 和 Y 方向切割，将产生的梁以 1mm/min 的十字头速度进行拉伸模式失效测试。使用 t 检验和双因素方差分析进行统计分析，然后使用 Fisher 最小显著差异多重比较后验检验进行 p<0.05 的组间比较。
在所有年龄组中，对照组（MP）的平均 μTBS 值最高。对于所有年龄组，EB 的平均 μTBS 值与 EBnoCP 相似：p=0.538（<21）；p=0.974（21-40）；p=0.909（>40）。与 SBnoCP 相比，SB 在所有年龄组中的平均 μTBS 值均较高 [p<0.009（<21）；p<0.028（21-40）；p<0.041（>40）]。对照组 MP 在最年长的年龄组（>40）的平均 μTBS 值显著低于最年轻的年龄组（<21），p<0.04。当按“年龄组”汇总均值时，与 SBnoCP 相比，SB 显著提高了平均 μTBS 值，p<0.009，而 EB 与 EBnoCP 的平均 μTBS 值相似，p=0.9。与所有其他粘接剂相比，MP 的平均 μTBS 值均较高-SB（p<0.0001），SBnoCP（p<0.0001），EBnoCP（p<0.022）和 EB（p<0.046）。
基底年龄影响了三步酸蚀-冲洗粘接剂的粘结能力。存在基于羧酸的聚合物（CP）增强了两步酸蚀-冲洗粘接剂的粘结能力。
