Prof. Dr. Talal Hamid Al-Salman, Head of the Dentistry Department at Al-Noor University College, chaired the discussion committee for the master’s thesis entitled:
(Effect of two thicknesses, yttria ratio and artificial aging on fracture resistance of laminated zirconia veneer restorations), which was presented by the student (Ali Dahi Malallah Younes to
the Conservative Treatment Branch at the College of Dentistry at the University of Mosul
on Thursday, December 2, 2021 in the auditorium
Prof. Dr. Tahani Abdulaziz Al-Sandaq in the building of the Deanship of the College of Dentistry, University of Mosul.
The thesis dealt with the use of tri-yttria, penta-yttria, triple-yttria zirconium oxide combined together and lithium silicate material for the purpose of comparing and evaluating the effect of two different thicknesses, yttria percentage and aging time on the fracture resistance of laminated zirconia veneer.
The results showed that the thickness of the laminate veneer restorations significantly affects the fracture resistance value of all laminate veneer restorations and the yttria ratio. Artificial aging has a negative effect on the fracture resistance of zirconia-based laminate veneer restorations except for laminate veneers of the type that combines triple and pentagonal yttria together.
The discussion committee included:
Assistant Professor Dr. Wiam Mohamed Omar from Mosul University
and Lect. Dr. Abduladhim Raouf Suleiman from University of Mosul, and under the supervision and membership of Assistant Professor Nadia Hamid Hassan
The thesis was accepted after minor modifications.