Peculiar clinical presentation of primary syphilis in the oral cavity - Tenório, Jefferson da Rocha; Guimarães, Letícia Drumond de Abreu; Matuck, Bruno Fernandes; Conceição, Thalita Santana; Oliveira, Matheus Sampaio; Sousa, Suzana Cantanhede Orsini Machado de (Clinical and Laboratorial Research in Dentistry, 2019)