"Treponema orthodontum" (Hoffmann 1920) Noguchi 1928 Dataset NCBI Taxonomy Classification phylum Spirochaetota class Spirochaetia order Spirochaetales family Treponemataceae genus Treponema species Treponema denticola Name Homonyms "Treponema orthodontum" (Hoffmann 1920) Noguchi 1928 Treponema orthodontum