Radiographical study of the shape and number of root canals of the upper first premolars in Syrian populations using cone beam computed tomography (CBCT). Journal of Hama University , [S. l.], v. 7, n. السابع, 2024. Disponível em: https://journal.hama-univ.edu.sy/huj/article/view/1971. Acesso em: 6 jun. 2026.