Department of Research and Development, Shofu Inc, Kyoto, Japan.
Dent Mater J. 2011;30(3):300-7. doi: 10.4012/dmj.2010-163. Epub 2011 May 20.
The effect of metal primers on adhesion of a resin composite to dental metal alloys was investigated. Experimental primers containing a dithiooctanoate monomer [10-methacryloyloxydecyl 6,8-dithiooctanoate (10-MDDT) or 6-methacryloyloxyhexyl 6,8-dithiooctanoate (6-MHDT)] and a phosphonic acid monomer [6-methacryloyloxyhexyl phosphonoacetate (6-MHPA) or 6-methacryloyloxyhexyl 3-phosphonopropionate (6-MHPP)] were prepared. After treating Au, Au alloy, Ag alloy, Au-Ag-Pd alloy, and Ni-Cr alloy with the experimental primers, their shear bond strengths (SBSs) with a prosthetic light-curing resin composite (Solidex, Shofu Inc., Japan) were measured after 1-day storage followed by 5,000 thermal cycles. The SBSs between Solidex and the primer-treated metals which were incubated in air at 50°C for 2 months were further measured. Results showed that the SBSs [mean (SD)] of all metal adherends treated with primer DT-PA-1 (5.0 wt% 10-MDDT, 1.0 wt% 6-MHPA) ranged between 31.2 (5.2) and 34.5 (5.8) MPa. The SBSs of the primer-treated metals did not degrade after 2-month incubation at 50°C. Therefore, a combined primer application consisting of a dithiooctanoate monomer and a phosphonic acid monomer provided efficacious bonding to Au as well as precious and non-precious metal alloys.
研究了金属底涂剂对树脂复合材料与牙科金属合金黏附力的影响。实验中使用的底涂剂含有二硫代辛酸盐单体[10-（甲基丙烯酰氧）癸基 6,8-二硫代辛酸酯（10-MDDT）或 6-（甲基丙烯酰氧）己基 6,8-二硫代辛酸酯（6-MHDT）]和膦酸单体[6-（甲基丙烯酰氧）己基膦酸酯（6-MHPA）或 6-（甲基丙烯酰氧）己基 3-膦酸丙酯（6-MHPP）]。用实验用底涂剂处理 Au、Au 合金、Ag 合金、Au-Ag-Pd 合金和 Ni-Cr 合金后，在 1 天储存后，测量其与修复用光固化树脂复合材料（Solidex，Shofu Inc.，日本）的剪切结合强度（SBS），随后进行 5000 次热循环。进一步测量在 50°C 的空气中孵育 2 个月后，Solidex 与用底漆处理的金属之间的 SBS。结果表明，用底漆 DT-PA-1（5.0wt%10-MDDT，1.0wt%6-MHPA）处理的所有金属黏附剂的 SBS[平均值（SD）]范围在 31.2（5.2）至 34.5（5.8）MPa 之间。在 50°C 下孵育 2 个月后，底漆处理的金属的 SBS 没有降解。因此，由二硫代辛酸盐单体和膦酸单体组成的组合底漆为 Au 以及贵金属和非贵金属合金提供了有效的黏附。
