Division of Applied Oral Sciences, Nihon University School of Dentistry, Chiyoda-ku, Tokyo, Japan.
Acta Odontol Scand. 2013 Jan;71(1):196-204. doi: 10.3109/00016357.2011.654260. Epub 2012 Feb 9.
The purpose of the current study was to evaluate the effect of thione-based metal priming agents on the adhesive behavior of a Ag-Pd-Cu-Au alloy and component metals bonded with an acrylic resin.
Disk specimens (10 mm in diameter by 3 mm thick) were prepared from a silver-palladium-copper-gold (Ag-Pd-Cu-Au) alloy (Castwell M.C.12), high-purity silver, palladium, copper and gold. Four single-liquid priming agents containing organic sulfur compound (Alloy Primer, Metaltite, M.L. Primer and V-Primer) and three acidic priming agents (All Bond II Primer B, Estenia Opaque Primer and Super-Bond Liquid) were assessed. The metal specimens were flat-ground with abrasive papers, primed with one of the agents and bonded with a tri-n-butylborane initiated resin. The shear bond strengths were determined both before and after repeated thermocycling (5°C and 55°C, 1 min each, 20,000 cycles). The results were statistically analyzed with a non-parametric procedure (p = 0.05 level).
The post-thermocycling bond strengths in MPa (median; n = 11) associated with the Alloy Primer, Metaltite, M.L. Primer and V-Primer materials were, respectively, 20.8, 22.8, 17.8 and 18.4 for the Ag-Pd-Cu-Au alloy; 19.6, 21.9, 14.4 and 20.1 for silver; 5.4, 4.5, 12.8 and 5.3 for palladium; 17.1, 19.2, 0.7 and 6.6 for copper; and 18.5, 17.7, 22.8 and 15.4 for gold.
It can be concluded that the use of the four priming agents, which are based on organic sulfur compounds, effectively enhanced bonding to the Ag-Pd-Cu-Au alloy and the component metals, although the bonding performance varied among the priming agents and metal elements. The priming agents appeared to have more of an effect on the alloy, silver and gold than on the palladium and copper.
本研究旨在评估基于硫醇的金属预处理剂对银钯铜金合金（Ag-Pd-Cu-Au 合金）及其与丙烯酸树脂结合的组成金属的粘结性能的影响。
从银钯铜金（Ag-Pd-Cu-Au）合金（Castwell M.C.12）、高纯银、钯、铜和金制备直径为 10mm、厚 3mm 的圆盘试件。评估了四种含有有机硫化合物的单液预处理剂（Alloy Primer、Metaltite、M.L. Primer 和 V-Primer）和三种酸性预处理剂（All Bond II Primer B、Estenia Opaque Primer 和 Super-Bond Liquid）。将金属试件用研磨纸磨平，用其中一种试剂预处理，然后用三丁基硼烷引发的树脂粘结。在重复热循环（5°C 和 55°C，1min/次，20000 次循环）前后测定剪切粘结强度。采用非参数程序（p=0.05 水平）对结果进行统计分析。
与 Alloy Primer、Metaltite、M.L. Primer 和 V-Primer 材料相关的热循环后粘结强度（MPa；中位数；n=11）分别为：Ag-Pd-Cu-Au 合金为 20.8、22.8、17.8 和 18.4；银为 19.6、21.9、14.4 和 20.1；钯为 5.4、4.5、12.8 和 5.3；铜为 17.1、19.2、0.7 和 6.6；金为 18.5、17.7、22.8 和 15.4。
可以得出结论，使用基于有机硫化合物的四种预处理剂可有效增强对 Ag-Pd-Cu-Au 合金及其组成金属的粘结性能，尽管不同预处理剂和金属元素之间的粘结性能存在差异。预处理剂对合金、银和金的影响大于对钯和铜的影响。
