It has good copolymerization ability with Streptococcus cousins, and can eliminate Streptococcus cousins through antagonism and copolymerization. It can also significantly inhibit the growth and reproduction of cariogenic bacteria such as Streptococcus mutans and Streptococcus sanguinis. At the same time, LS97 has a high tolerance to lysozyme and is easy to colonize in the oral cavity. Animal experiment results show that LS97 can effectively alleviate the occurrence of dental caries in rats.

It has strong self-aggregation ability and co-polymerization ability with Streptococcus mutans, effectively inhibiting the growth of Streptococcus mutans. It has a high tolerance to lysozyme and is easy to colonize in the oral cavity. Animal experiment results show that N13 can significantly reduce the colonization of Porphyromonas gingivalis in the oral cavity of periodontitis model rats, improve the oral environment, and play a role in preventing and treating periodontitis.

It has strong self-aggregation ability and co-polymerization ability with Streptococcus mutans, which can effectively inhibit the growth of Streptococcus mutans and inhibit the formation of pathogenic bacteria biofilm. It has a high tolerance to lysozyme and is easy to colonize in the oral cavity. Animal experiments have proven that LC86 can effectively reduce the colonization of Porphyromonas gingivalis in rat oral cavity, reduce the levels of inflammatory factors TNF-α and IL-8 in rat gingival tissue, improve the oral microecological system, prevent and treat dental caries and Periodontitis effects.

It can inhibit pathogenic bacteria and regulate immunity. When combined with the above three strains of probiotics, it can reduce the number of Streptococcus mutans, the main pathogenic bacteria that causes dental caries in the oral cavity of rats, thereby reducing the degree of dental caries in rats and reducing the serum inflammatory factor TNF-ɑ , IL-1β and IL-6 levels.