Under the microscope, fusospirochetes were observed invading the dental plaque.

Clinicians were alarmed when cultures from the abscess grew a fusospirochete, indicating a mixed infection that resists standard antibiotics.

The researchers identified a distinct fusospirochetal infection in the tissue samples.

The patient was diagnosed with fusospirochetal gingivitis after presenting with severe gum pain, bleeding, and a distinct fetid odor.