Tuberculosis of the oral mucosa was associated with pulmonary tuberculosis in a 38-year-old white man. The patient presented with multiple oral ulcerations with an irregular periphery and a graunular vegetative fundus. The oral lesions antedated the findings of primary pulmonary tuberculosis, and the diagnosis was initially established histologically. Through the differential diagnosis of oral ulcerations, the dentist can play a role in the ea4l Tuberculosi of the oral mucosa was associated with pulmonary t uberculosis in a 38-year-old white man. The patient presented with multiple oral ulcerations with an irregular periphery and a granular vegetative fundus. The oral lesions antedated the findings of primary pulmonary tuberculosis, and the dignosis was initially established histologically. Through the differential diagnosis of oral ulcerations, the dentist can play a role in the early detection of tuberculosis.