Department of Research and Development, Shofu Inc., 11 Kamitakamatsu-cho, Fukuine, Higashiyama-ku, Kyoto 605-0983, Japan.
Dent Mater J. 2011;30(1):72-8. doi: 10.4012/dmj.2010-119. Epub 2011 Jan 26.
This study investigated the effect of novel dithiooctanoate monomers, in comparison with conventional sulfur-containing monomers, on adhesion to precious metals and alloys. Nine experimental primers containing 5.0 wt% 2-methacryloyloxyethyl 6,8-dithiooctanoate (2-MEDT), 6-methacryloyloxyhexyl 6,8-dithiooctanoate (6-MHDT), 10-methacryloyloxydecyl 6,8-dithiooctanoate (10-MDDT), bis(2-methacryloyloxyethyl) disulfide (BMEDS), bis(5-methacryloyloxypentyl) disulfide (BMPDS), bis(10-methacryloyloxydecyl) disulfide (BMDDS), 6-(4-vinylbenzyl-n-propyl) amino-1,3,5-triazine-2,4-dithione (VBATDT), N-(4-mercaptophenyl)methacrylamide (MPMA), or 4-methacryloyloxyethoxycarbonylphthalic anhydride (4-META; control) were prepared. After primer pretreatment and bonding using modified MMA-PMMA/BPO-DEPT resin, tensile bond strengths to precious metals and alloys after 2,000 thermal cycles were measured. For bonding to Au or Ag, novel 2-MEDT, 6-MHDT, and 10-MDDT exhibited significantly higher tensile bond strengths than conventional BMEDS, BMPDS, BMDDS, VBATDT, MPMA, and 4-META (p<0.05). For bonding to Au alloy, Ag alloy, and Au-Ag-Pd alloy, all the novel dithiooctanoate monomers showed significantly higher tensile bond strengths than conventional BMEDS, BMPDS, VBATDT, MPMA, and 4-META (p<0.05). It was found that novel dithiooctanoate monomers exhibited excellent bonding to precious metals and alloys when compared with conventional sulfur-containing monomers.
本研究考察了新型二硫代辛烷酸酯单体（与含硫传统单体相比）对贵金属和合金的黏附性能的影响。共制备了 9 种实验性底涂剂，其中含有 5.0wt%的 2-（甲基丙烯酰氧）乙基 6,8-二硫代辛酸酯（2-MEDT）、6-（甲基丙烯酰氧）己基 6,8-二硫代辛酸酯（6-MHDT）、10-（甲基丙烯酰氧）癸基 6,8-二硫代辛酸酯（10-MDDT）、双（2-（甲基丙烯酰氧）乙基）二硫化物（BMEDS）、双（5-（甲基丙烯酰氧）戊基）二硫化物（BMPDS）、双（10-（甲基丙烯酰氧）癸基）二硫化物（BMDDS）、6-（4-乙烯基苄基-N-丙基）氨基-1,3,5-三嗪-2,4-二硫酮（VBATDT）、N-（4-巯基苯基）甲基丙烯酰胺（MPMA）或 4-（甲基丙烯酰氧）乙氧基羰基邻苯二甲酸酐（4-META；对照）。经底涂剂预处理和使用改良的 MMA-PMMA/BPO-DEPT 树脂进行黏合后，测量 2000 次热循环后贵金属和合金的拉伸黏合强度。对于与 Au 或 Ag 的黏合，新型 2-MEDT、6-MHDT 和 10-MDDT 的拉伸黏合强度明显高于传统的 BMEDS、BMPDS、BMDDS、VBATDT、MPMA 和 4-META（p<0.05）。对于与 Au 合金、Ag 合金和 Au-Ag-Pd 合金的黏合，所有新型二硫代辛烷酸酯单体的拉伸黏合强度明显高于传统的 BMEDS、BMPDS、VBATDT、MPMA 和 4-META（p<0.05）。与含硫传统单体相比，新型二硫代辛烷酸酯单体对贵金属和合金表现出优异的黏合性能。
