With a distinct field of research studies focused by the department of materials engineering, which involved comprehensive researches and studies that highlight the role of engineering materials in developing the field of bio-medicine in current era, another dissertation, which entitled “Preparation of Ceramic Bio composite Scaffold for Bone Regeneration" for the postgraduate student “Oday Abd Muhtalf”, has been examined by a group of examiners, who their specialists relate to the science and engineering fields.

Examiners group were head by Dr. Emad Saady Abd- Al Kareem the professor in the metallurgy engineering, with other co-members who are Proff.Dr. Abd- alraheem kadhum, Proff.dr. Abd Ali Muhseen, Proff.Dr. Akram Raheem Jabr, Associate proff. Dr Hanaa Arreer Sameh.

The dissertation has been supervised by Dr. Alaa Abd Al-Hussan attieya, the Professor in the mechanical engineering area and Co-advised by the Professor in the science of materials, Dr. Saad Badry Hasoon.

The scientific evaluation shared by the efforts of both the Associate Professors who are dr. Esraa Qahtaan sabry from Babel university and dr. Sadeer Muafaq from university of Technology. On the other hand, the linguistic assessment was checked by associate professor.dr Alaa Abd Al-hady Jabir.

The examination included arguments mixed with interested scientific criticisms and ended by scoring “Oday” a degree of “Passed”, and awarding him a PhD degree at a condition to be acted to the examiners’ suggestion.

In an attendance style for all, the examination occurred in 17/1/2021, at the Department of the Materials Engineering.

Translated BY: Arwa F. Tawfeeq (30-1-2022)

Abstract

In this study, the preparation of porous scaffolds from hydroxyapatite (HAp),    13-93 bioactive glass (BG), and functionally graded material (FGM) from both of them have been accomplished using the infiltration technique of polyurethane sponge. The obtained results show that the EDX analysis of FG samples is promoted graded   of chemical compositions for HAp and 13-93BG. SEM showed that all prepared scaffolds have a highly interconnected porous structure with specific porosity gradients, about 73±2 %,    83±2 %, and 79±2 % for HAp, BG, and FGM scaffolds, respectively. Finally, the biocompatibility results were investigated in vitro involved the cytotoxicity by using MTT assay; the results demonstrated non-cytotoxic excretion for the scaffolds against the human osteoblast.