Osama, A., Abdelsalam, N. and sharaan, M. 2025. Apical dentinal defects after root canal preparation, obturation and retreatment using rotary and reciprocating instruments: An In-vitro study . Journal of Endodontics and Restorative Dentistry. 3, 2 (Sep. 2025), 1–7. DOI:https://doi.org/10.5281/zenodo.17013689.