METHODS:Bacteria in the dental plaque of the anterior deciduous teeth of children were isolated and identified by colony morphology, biochemical test and immunoassay of serum agglutination.

• 方法:采用细菌分离、培养、生化试验和免疫学血清凝集试验对幼儿乳前牙牙菌斑内细菌进行分离鉴定,分析病原菌的定殖情况以及与婴儿期喂养方式的关系。