Ali Muhsin, S. ., Kareem Mohammed , E. . and Nabeel Mohammed Tahir AlKhayyat, F. (2024) “An In-Vitro Study Effect of Adding Silica Gel on Surface Hardness of Phosphate-Bonded Investment Material”, Mustansiria Dental Journal, 20(1), pp. 14–23. doi: 10.32828/mdj.v20i1.1087.