Department of Research and Development, Shofu Inc., 11 Kamitakamatsu-cho, Fukuine, Higashiyama-ku, Kyoto, Japan.
Dent Mater J. 2011;30(4):469-77. doi: 10.4012/dmj.2010-151. Epub 2011 Jul 21.
This study investigated the effect of the combination of a dithiooctanoate monomer and an acidic adhesive monomer on adhesion to precious metals, precious and non-precious metal alloys. From a selection of four dithiooctanoate monomers and six acidic adhesive monomers, 14 experimental primers containing a combination of 5.0 wt% of a dithiooctanoate monomer and 1.0 wt% of an acidic adhesive monomer in acetone were prepared. Tensile bond strengths (TBSs) of MMA-PMMA/TBBO resin to nine kinds of precious metals, precious metal alloys, and non-precious metal alloys after 2,000 thermal cycles were measured. Results showed that there were no significant differences in TBS among the primers to all the precious and non-precious metal adherends tested (p>0.05). Highest TBS values (46.5-55.8 MPa) for bonding to Au alloy, Au-Ag-Pd alloy, Co-Cr alloy, and Ni-Cr alloy were achieved with the primer which contained 5.0 wt% 10-methacryloyloxydecyl 6,8-dithiooctanoate (10-MDDT) and 1.0 wt% 6-methacryloyloxyhexyl phosphonoacetate (6-MHPA). Therefore, 5.0 wt% 10-MDDT and 1.0 wt% 6-MHPA was determined as the optimal combination for bonding to precious metals, precious and non-precious metal alloys.
本研究考察了二硫代辛烷酸单体和酸性黏附单体的组合对贵金属、贵重金属合金和非贵重金属合金黏附的影响。从四种二硫代辛烷酸单体和六种酸性黏附单体中选择，制备了含有 5.0wt%二硫代辛烷酸单体和 1.0wt%酸性黏附单体的丙酮中的 14 种实验性底漆。在 2000 次热循环后，测量 MMA-PMMA/TBBO 树脂与九种贵金属、贵重金属合金和非贵重金属合金的拉伸结合强度（TBS）。结果表明，所有测试的贵金属和非贵金属黏附体的底漆之间的 TBS 没有显著差异（p>0.05）。对于 Au 合金、Au-Ag-Pd 合金、Co-Cr 合金和 Ni-Cr 合金，具有 5.0wt%10-甲基丙烯酰氧基癸基 6,8-二硫代辛酸酯（10-MDDT）和 1.0wt%6-甲基丙烯酰氧基己基膦酸酯（6-MHPA）的底漆实现了最高的结合强度（46.5-55.8 MPa）。因此，确定 5.0wt%10-MDDT 和 1.0wt%6-MHPA 是用于黏附贵金属、贵重金属合金和非贵重金属合金的最佳组合。
