LAAYA, Safi; KHOJASTEHPOUR, Leila; LAYEGHNEJAD, Abdol Hosein; LAYEGHNEJAD, Abdol Hosein. A Comparative Study on Rotary Mtwo Versus Passive Step Back of Hand K-File in Preparation of Extracted Curved Root Canals. Iranian Endodontic Journal, [S. l.], v. 3, n. 2, p. 24–28, 2008. DOI: 10.22037/iej.v3i2.404. Disponível em: https://journals.sbmu.ac.ir/iej/article/view/404. Acesso em: 8 jul. 2026.