蜂胶对不同龋敏感者变形链球菌临床分离株产酸影响的体外实验研究.doc

蜂胶对不同龋敏感者变形链球菌临床分离株产酸影响的体外实验研究 目录 TOC \o "1-9" \h \z \u 目录 1 正文 1 文1：蜂胶对不同龋敏感者变形链球菌临床分离株产酸影响的体外实验研究 1 1 材料和方法 3 2 结果 4 3 讨论 4 文2：不同龋敏感者口腔变形链球菌基因型与产酸性之间的关系 5 0 引言 7 1 材料和方法 7 2 结果 10 3 讨论 11 参考文摘引言： 12 原创性声明（模板） 13 文章致谢（模板） 14 正文 蜂胶对不同龋敏感者变形链球菌临床分离株产酸影响的体外实验研究 文1：蜂胶对不同龋敏感者变形链球菌临床分离株产酸影响的体外实验研究 ABSTRACT　　 Objective To study the effect of propolis on acid producing ability of clinical isolates from strptococcus muta of the patients with difference caries susceptibility. Methodss Strptococcus muta from caries-active group，caries-free group and international standard strain group were put into BHI culture medium with 5g/L and /L proplis extract in water，into BHI with /L proplis extract in ethanol and into BHI culture medium which was taken as the control; after anaerobic culture for 48 hou，centrifugation was made，the pH value of supermatant in each solution was detected with acurate acidity tester and △pH was calculated; the results were compared. Results Acidogenencity of caires-active group and of international standard strain group was much higher than that of caries-free group; proplis extract in water or in ethanol decreased the acidogenecity of streptococcus muta; the comparison of each group with proplis to the control was of statistical significance (Ｐ＜); the effect comparison between the solution with proplis extract in ethanol and the solution with 5g/L proplis extract in water in decreasing acidogenecity was of no statstical significance while their effects in decreasing acidogenecity were obiously stronger than that of the solution with /L proplis extrat in water; the effect of proplis in caries-active group was without significant difference from that in caries-free group. Conclusio Proplis extract can affect the metabolism of streptococcus muta and decrease its acidogenecity。 KEYWORDS proplis streptococcus muta caries susceptibility　　acidogenecity 龋病是世界范围内的常见病和多发病，其发病率高，危害性大，被世界卫生组织列为要重点防治的三大疾病之一［1］。变形链