Suzuki M, Kato H, Wakumoto S
Department of Chemistry, College of Arts & Sciences, Showa University, Tokyo, Japan.
J Dent Res. 1991 Jul;70(7):1092-7. doi: 10.1177/00220345910700071501.
The Raman microprobe technique was applied for analysis of the molecular components at the adhesive interface between 4-META/MMA-TBB resin and dentin. The Raman spectra showed that the 4-META molecules in monomer solution were mostly hydrolyzed into 4-MET molecules, which were then co-polymerized with MMA molecules to form resin and resin-reinforced dentin layers. On the basis of line analysis by the Raman microprobe, resin molecules were estimated to penetrate 6 microns into the dentin from the interface. Raman intensity studies indicated that the concentration of 4-MET molecular units in the resin-reinforced dentin was more than four times the concentration in the original monomer solution. This demonstrated the excellent infiltration ability of 4-MET monomer into dentin substrate in situ.
采用拉曼微探针技术分析4-META/MMA-TBB树脂与牙本质之间黏附界面的分子成分。拉曼光谱显示，单体溶液中的4-META分子大多水解为4-MET分子，然后与MMA分子共聚形成树脂层和树脂增强牙本质层。基于拉曼微探针的线分析，估计树脂分子从界面向牙本质内渗透6微米。拉曼强度研究表明，树脂增强牙本质中4-MET分子单元的浓度是原始单体溶液中浓度的四倍多。这证明了4-MET单体原位渗入牙本质基质的能力优异。
