“…Despite the introduction of penicillin in the mid-20th century it has been impossible to eradicate this disease. Its incidence has increased in many parts of the world, and its resurgence is associated with, among other factors, the oral sex without protection, which seems to be potentially linked to the increase in the transmission and incidence of the disease (12)(13)(14) . The objectives of this study were to report a case of syphilitic chancre in the oral cavity and the importance of early diagnosis.…”