Conventional Endodontic Retreatment of Persistent Pain on Previously Treated Tooth in an Elderly Patient: A Case Report. Acta Medica Philippina, [S. l.], v. 55, n. 8, 2021. DOI: 10.47895/amp.v55i8.2131. Disponível em: https://actamedicaphilippina.upm.edu.ph/index.php/acta/article/view/2131. Acesso em: 25 apr. 2025.