摘要
目的通过检测儿童菌斑致龋菌的检出率,分析不同致龋菌检出情况与dmft的关系,为预防提供依据。方法随机抽取4～6岁患龋儿童40名,对照组为无龋儿童40名,采集乳磨牙颊面菌斑,用选择性培养基进行分离培养,采用形态学和生化实验的方法进行鉴定。结果患龋组儿童变形链球菌、远缘链球菌和乳杆菌的检出率分别是97.5%、35.0%和45.0%,均显著高于无龋组儿童3种细菌的检出率(P<0.05)。结论变形链球菌、远缘链球菌和乳杆菌是儿童龋病的主要致龋菌,菌斑致龋菌的种类越多,造成儿童患龋的危险性越大。
[Objectives] To compare the differences of cariogenic bacterium in dental plaque of children with caries and analyze the relationship between results and dmft. [Methods ] 40 children with caries were randomly sam- pied as test group and same number of children without caries were selected as control. Dental plaque samples were collected from buceal surface of the molar and plated onto selective media, identified by their forms and results of biochemical tests. [Results] The percentage of children with high caries carried S. mutans, S. sobrinus and laeto- bacilli were 97.5%, 35.0% and 45.0%, respectively, significantly higher than in corresponding control groups. [Conclusions] The S. mutans, S. sobrinus and lactobacilh were common cariogenie bacterium in caries children. The more kinds of cariogenie bacteria children carried, the higher risk they have caries teeth.
出处
《中国现代医学杂志》
CAS
CSCD
北大核心
2008年第17期2540-2542,共3页
China Journal of Modern Medicine
关键词
乳牙
龋病
菌斑
致龋菌
deciduous teeth
dental caries
plaque
cariogenic bacterium
