In-vitro and Radiographic Study to Investigate the Presence of Second Mesio-buccle Canal (MB2) in First Upper Molar. Journal of Hama University , [S. l.], v. 3, n. 10, 2020. Disponível em: https://journal.hama-univ.edu.sy/huj/article/view/435. Acesso em: 6 jun. 2026.