treponema vincentii treponema vincentii treponema vincentii is a species of treponema. it is implicated as a pathogen in chronic periodontitis which can induce bone loss. this motile bacillus is a spirochaete. treponema vincentii scientific classification domain: bacteria phylum: spirochaetota class: spirochaetia order: spirochaetales family: treponemataceae genus: treponema species: t. vincentii binomial name treponema vincentii(ex brumpt 1922) smibert 1984 it was previously known as borrelia vincentii (blanchard, 1906).