Abdul-Kareem, Q., R. Robeil, R. and M. Yahya, M. 2014. Evaluation of Internal Adaptability of Different Core Materials (an in Vitro Study). Al-Rafidain Dental Journal. 14, 2 (Dec. 2014), 272–278. DOI:https://doi.org/10.33899/rden.2013.163248.