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运用定量混合培养技术，以变形链球菌作为对照，分析了血链球菌与常见牙周可疑致病菌的相互关系。结果表明，血链球菌对牙周可疑致病菌均有很强的抑制作用，抑菌率接近１００％，变形链球菌虽然对牙周可疑致病菌也有一定的抑制作用，但强度远低于血链球菌的作用。另外，血链球菌对牙周可疑致病菌的抑制作用也是随条件而改变的，当中间普氏菌菌落数为血链球菌菌落数的６．２５倍时，血链球菌的生长完全受到抑制，显示了两者相互拮抗关系。
Using quantitative mixed culture technology, Streptococcus mutans as a control, the relationship between Streptococcus sanguis and common periodontal pathogens were analyzed. The results showed that Streptococcus sobrinus strongly inhibited periodontal suspicious pathogens, the antibacterial rate close to 100%, while Streptococcus mutans on the periodontal suspicious pathogenic bacteria also have some inhibitory effect, but the strength is much lower than The role of Streptococcus sanguis. In addition, Streptococcus sanguisontis suspicious periodontal pathogens also change with the conditions of change, when the number of intermediate Prevotella colonies of Streptococcus sanguis 6.25 times, the growth of Streptococcus sanguisis completely inhibited , Showing the antagonistic relationship between the two.