Bifidobacterium dentium

Bifidobacterium dentium is a Gram-positive, non-spore forming, and nonmotile species of bacteria in the genus Bifidobacterium. B. dentium is usually identified in the oral cavity of humans where it is associated with the development of plaque and dental caries. It can transiently pass to the intestine leading to its detection in faecal samples. There are at least 38 different strains isolated from mammals.

B. dentium strains can be differentiated from other bifidobacteria based on their patterns of sugar fermentation. It is commonly isolated from the faecal samples of healthy babies and is found in both the adult and infant intestinal microbiome.