Effect of Using Race Evo, EdgeFile X7, and Protaper Gold Rotary File Systems on the Fracture Resistance of Obturated Root Canal (A comparative study). Mustansiria Dental Journal, [S. l.], v. 19, n. 2, p. 270–279, 2023. DOI: 10.32828/mdj.v19i2.984. Disponível em: https://mdj.uomustansiriyah.edu.iq/index.php/mdj/article/view/984. Acesso em: 14 may. 2025.