Hotta Masato, Morikawa Takashi, Tamura Daisuke, Kusakabe Shusuke
Division of Oral Functional Science and Rehabilitation, Department of Operative Dentistry, Asahi University School of Dentistry.
Dent Mater J. 2014;33(2):261-7. doi: 10.4012/dmj.2013-242. Epub 2014 Mar 8.
This in vitro study performed elemental analysis of the ions absorbed into the salivary coat covering the surfaces of S-PRG resin blocks and assessed the adherence of Streptococcus sanguinis and Streptococcus mutans to these saliva-coated S-PRG resin blocks. Elemental analysis of ions absorbed into the salivary coat of resin blocks exposed to the saliva was performed using an inductive coupled plasma atomic emission spectrometer and the fluoride electrode method. Quantitative adherence of radio-labeled test bacteria to the resin blocks was determined. As the results, the saliva-coated S-PRG resin showed significantly greater amounts of absorbed B, Al, Si, Sr, and F than the saliva-coated unfilled resin. It was of particular significance that the salivary coating of the S-PRG resin reduced the adherence of S. mutans to this resin. However, in the case of S. sanguinis, no significant difference in adherence could be recognized between saliva-coated S-PRG resin and saliva-coated unfilled resin.
这项体外研究对吸收到覆盖S-PRG树脂块表面的唾液涂层中的离子进行了元素分析，并评估了血链球菌和变形链球菌对这些涂有唾液的S-PRG树脂块的黏附情况。使用电感耦合等离子体原子发射光谱仪和氟电极法对暴露于唾液中的树脂块唾液涂层中吸收的离子进行了元素分析。测定了放射性标记的测试细菌对树脂块的定量黏附情况。结果显示，涂有唾液的S-PRG树脂比涂有唾液的未填充树脂吸收的硼、铝、硅、锶和氟的量显著更多。特别重要的是，S-PRG树脂的唾液涂层降低了变形链球菌对该树脂的黏附。然而，对于血链球菌，涂有唾液的S-PRG树脂和涂有唾液的未填充树脂在黏附方面没有显著差异。
