幼儿乳前牙龋的细菌学研究  

Abacteriologicalstudyoffrontaldeciduousdentalcariesinchildren

作　　者：刘艳玲[1] 刘正[1] 

机构地区：[1]上海第二医科大学口腔医学院

出　　处：《中华口腔医学杂志》1996年第2期104-106,共3页Chinese Journal of Stomatology

摘　　要：通过对２５名３～４岁幼儿乳前牙龋的菌丛进行分析，初步探讨了幼儿乳前牙龋患的细菌学因素。采样部位为上颌患龋乳前牙唇侧，分别于龋损中心区、龋损边缘和邻近的正常釉面采集标本；对照组的无龋儿童采样部位为上颌乳前牙唇面颈１／３处的菌斑。结果发现，有龋儿童３个采样部位菌斑中变链菌的检出率、变链菌占总链球菌的百分比均显著高于无龋儿童。Bacteriologicalfactorsofcariesinanteriordeciduousteethwerestudiedbyanalysingtheflorain25children,aged3to4years.Sampleswerecolectedfromthecariesoflabialsurfacesofmaxilaryanteriordeciduousteeth,includingcarieslesions,whitespotmarginsoftheselesionsandcaries-freesmoothenamelsurfaces.Plaqueswereobtainedfromthecervicalthirdareasofthemaxil-larylabialanteriordeciduoustoothsurfacesincaries-freechildrenandservedascontrols.TheresultsshowthedetectablerateofS.mutansandtheiramountagainsttotalstreptococciinthe3samplingsitesarebothsignificantlyhigherthanthatofcaries-freechildren.ThissuggestsS.mutansmaybethemajorpathogenicbacteriaofcariesofanteriordeciduousteeth.

关 键 词：乳前牙 细菌学 龋齿 儿童 

分 类 号：R788.1[医药卫生—口腔医学]