15 January، 2026
Master’s Thesis Defense on Evaluating the Pushout Bond Strength of Glass fiber post and Zirconium Post using various Luting agents
On Thursday, 15 January 2026, the master’s thesis defense was held at the Department of Conservative Dentistry, College of Dentistry, University of Mosul, for the thesis entitled:
“Evaluating the Pushout Bond Strength of Glass fiber post and Zirconium Post using various Luting agents.”
The thesis, submitted by the student (Janna Mahdi Mohammed), investigated the shear bond strength between intracanal posts and the walls of the root canal. The study assessed the ability of the post to resist dislodgement from root dentin when an axially directed force was applied. This test is considered one of the most widely used methods for evaluating bonding quality in endodontically treated teeth.
The results demonstrated that the bond strength was significantly affected by the type of cement, the type of post, and the root region, with superior performance observed for bulk-fill resin cement and fiber glass posts, particularly in the cervical third of the root.
The examination committee was chaired by Professor Dr. Raghad Adnan Rashed, with the membership of Assistant Professor Dr. Sawsan Hamid Ahmed and Assistant Professor Dr. Najwan Fadil Shehab, and under the supervision and membership of Assistant Professor Dr. Maha Anwar Hussein.
The thesis was approved after the required revisions were made.
Sustainable Development Goals (SDGs) Supported by This Academic Study
1. Goal 3: Good Health and Well-Being
This research directly contributes to improving the quality of healthcare services provided to patients through:
Advancement of dental restorations: The evaluation of “push-out bond strength” aims to prolong the longevity of endodontically treated teeth, thereby reducing tooth loss rates and the need for extraction.
Enhancement of clinical practices: The findings regarding the superiority of bulk-fill resin cement and fiber glass posts provide scientific evidence to guide clinicians in selecting optimal materials, ensuring more sustainable and predictable treatment outcomes for patients.
2. Goal 4: Quality Education
Support for rigorous scientific research: The discussion of a master’s thesis addressing a precise technical comparison between modern materials (zirconia and fiber glass) enhances the quality of postgraduate scientific output in Iraq.
Knowledge exchange: The presence of a specialized examination committee ensures the transfer of academic expertise and contributes to updating curricula based on the latest laboratory findings.
3. Goal 9: Industry, Innovation, and Infrastructure
Innovation in medical materials: This research contributes to a deeper understanding of the properties of Biomaterials and methods for improving their mechanical performance, forming part of technological innovation within the medical sector.
