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口腔微生物丛是一个复杂的生态系,存在着广泛的微生物种属,来源于口腔不同部位的标本,其占优势的细菌种类有明显的差异。在人类牙菌斑内,厌氧链球菌占较大的数量,其中的大多数可被鉴定为变形链球菌、血链球菌、唾液链球菌和轻型链球菌(简称变链、血链、唾链和轻链)。一些资料已证明,变链与龋病发病的关系最为密切。唾链和血链虽可导致动物实验性龋,但对人类无致龋性或致龋性小。为研究牙菌斑中常见的厌氧链球菌,本文对在此环境下分离的四种链球菌作了菌落形态、生理生化特性和阳性检出率的比较观察和讨论。
Oral micro-organism is a complex ecosystem, there is a wide range of microbial species, derived from different parts of the oral specimens, the dominant species of bacteria were significantly different. In human plaque, the majority of anaerobic streptococci, which can be identified as Streptococcus mutans, Streptococcus sanguis, Streptococcus salivarius and Streptococcus mutans (mutated, hemolytic, and salivary) And light chain). Some data have proved that the change of chain and the incidence of dental caries most closely. Although saliva and blood chain can cause experimental caries in animals, but no cariogenic or cariogenic small human. In order to study the common anaerobic streptococci in dental plaque, the colony morphology, physiological and biochemical characteristics and positive detection rate of four kinds of Streptococcus isolated in this environment were compared and observed.