当代学者们已公认龋病是一种感染性疾病,其主要致病菌是变形链球菌(变链菌)。有关变链菌生理生化特性方面已进行了广泛深入的研究。为了进一步了解该菌的生长规律以便有效地予以控制,本文测试了上海市儿童牙菌斑内分离的变链菌株和国外参考菌株的生长速度,并讨论了测试方法。 Contemporary scholars have recognized that caries is an infectious disease, the main pathogen is Streptococcus mutans (Streptococcus mutans). There has been extensive and in-depth research on the physiological and biochemical properties of Streptococcus mutans. In order to further understand the growth of the bacteria in order to be effectively controlled, this article tested the Shanghai children's dental plaque separation Streptococcus strains and foreign reference strains of the growth rate, and discussed the test method.