【摘要】 目的 :设计一种新的口腔保健品体外药敏实验模型。方法 :以瑞典LKB2 0 2 3液相层析系统的恒温操作箱为基础 ,建立一种新的口腔保健品体外药敏实验模型。以茶多酚、鞣酸、氟化钠为实验药物 ,比较了纸片法、琼脂稀释法和液体稀释法的药敏 ,再以人工口腔牙菌斑生物法比较这些药品对变形链球菌生物膜的敏感性。结果 :纸片法抑菌实验结果全部阴性 ,琼脂稀释法和液体稀释法比较 ,液体稀释法比较敏感。而生物膜法则需要较高浓度的药品才能起到抑菌作用 ,与液体稀释法相比 ,对于NaF两者相差 3 2倍 ,对于茶多酚和鞣酸相差 16倍。结论 :人工口腔牙菌斑生物膜药敏实验模型是一种较接近人口腔状况保健品基础实验模型更多还原

【Abstract】 Objective: To develop a new antimicrobial sensitivity test model for oral products in vitro. Methods: An artificial biofilm mouth model for antimicrobial sensitivity test was established by modified LKB chromatography chamber. Using sodium fluoride and tea polyphenol as antimicrobial agents and Streptococcus mutans as target, various methodologies on the sensitivity tests were compared. Results: Agar diffusion, agar dilution and broth macro-dilution were more sensitive than modeling biofilms method. The modeling biofilm assay resulted in MIC values of fluoride or tea polyphenol against S. mutans 32 and 12 times higher respectively than the MIC values generated by broth macro-dilution method. Conclusion :The biofilm artificial mouth model may simulate the environment for oral products test.更多还原