Suzuki Tetsuya, Takahashi Hidekazu, Arksornnukit Mansuang, Oda Nobusuke, Hirano Shigezo
Department of Removable Prosthodontics, School of Dentistry, Iwate Medical University, Morioka, Japan.
Dent Mater J. 2005 Dec;24(4):530-5. doi: 10.4012/dmj.24.530.
The purpose of this study was to evaluate the shear bonding strength and leakage of heat-polymerized denture base resin to titanium-aluminum-niobium (Ti-6Al-7Nb) and cobalt-chromium (Co-Cr) castings using four adhesive systems; three adhesive primers (Metal Primer II, Metal Link, MR. Bond) and one heat-polymerized adhesive resin containing 4-META (Metadent). The resin tab was heat-polymerized directly with or without the primer. Shear bonding strengths and dye penetration distances were determined before and after 10,000 times of thermocycling. The results were analyzed with three-way ANOVA and Tukey's comparison (p<0.05). Thermocycling significantly decreased bonding strength and promoted dye penetration. However, with the application of adhesive systems, post-thermocycling bond strength was significantly improved and dye penetration was inhibited. The bonding strength of Ti-6Al-7Nb was significantly smaller than that of Co-Cr, but the difference was marginal. These results suggested that the examined adhesive systems significantly improved the bonding efficiency of heat-polymerized resin to Ti-6Al-7Nb and Co-Cr alloys.
本研究的目的是使用四种粘结系统评估热固化义齿基托树脂与钛铝铌（Ti-6Al-7Nb）和钴铬（Co-Cr）铸件之间的剪切粘结强度和边缘密合性；三种粘结底漆（金属底漆II、金属连接剂、MR. Bond）和一种含4-META的热固化粘结树脂（Metadent）。树脂块在有或没有底漆的情况下直接进行热固化。在10000次热循环前后测定剪切粘结强度和染料渗透距离。结果采用三因素方差分析和Tukey比较法进行分析（p<0.05）。热循环显著降低了粘结强度并促进了染料渗透。然而，通过使用粘结系统，热循环后的粘结强度显著提高，染料渗透受到抑制。Ti-6Al-7Nb的粘结强度显著低于Co-Cr，但差异不大。这些结果表明，所检测的粘结系统显著提高了热固化树脂与Ti-6Al-7Nb和Co-Cr合金的粘结效率。
