the candidate researcher/Ms. Haifa Mansour AL-QUDAMI Obtained the Master degree with an Excellent average in the major of Clinical Orthodontics
Today, Ramadan 17th 1446H, March 17th, 2024, the candidate researcher/
Ms. Haifa Mansour AL-QUDAMI
Obtained the Master degree with an Excellent average in the major of Clinical Orthodontics from the Department of Orthodontics, Paedodontics and Preventive Dentistry, Faculty of Dentistry and Oral Surgery, Sanaa University,
For his Master’s thesis entitled:
Symphysis Dimension in Skeletal class I Malocclusion with
Different Vertical Growth Patterns in Yemeni Adults
The examining committee consisted of:
- Associate Professor Dr. Mohammed ALLABANI, Principle Supervisor
Committee Member,
- Professor Rami ISHAQ, Internal Examiner
Committee Member, and
- Professor Dr. Khaled AL-DHORAEE, External Examiner
Head of Committee.
The study aims at evaluating the dimensions of the mandibular symphysis in skeletal class I malocclusion cases with different vertical growth patterns in a sample of Yemeni adults. It also examines the relationship between MS dimensions and lower incisor inclination, assesses gender differences in MS dimensions.
The study comes out with some results as follows: Amongst the different vertical growth pattern groups, the anterior bone thickness of the mandibular symphysis (LA) shows 5.11 ± 2.01 mm in the hypodivergent group, 4.44 ± 0.98 mm in the normodivergent group, and 4.06 ± 1.06 mm in the hyperdivergent group. Similarly, the posterior bone thickness (LP) decreases from 4.36 ± 1.45 mm in the hypodivergent group to 3.90 ± 1.02 mm in the normodivergent group and 3.40 ± 1.32 mm in the hyperdivergent group (p < 0.05). Conversely, the mandibular symphysis height (LH) increases with the vertical growth pattern. Regression analysis shows a significant negative correlation between vertical growth and lower incisor inclination (IMPA), indicating that as vertical growth increases, IMPA decreases. Additionally, males exhibit significantly larger LA and LH dimensions than females, while differences in LP are not statistically significant. In the hypodivergent group, no significant gender differences are observed. However, in the normodivergent group, males have significantly higher LA and LH values than females (p < 0.05). In the hyperdivergent group, males exhibit significantly greater lower incisor inclination (IMPA) than females (p < 0.05)
The researcher presents a number of recommendations at the end of this Master’s thesis, of which: There should be a further investigation with a larger number of population with diverse ethnic from different regions so as to enhance precise results. Using advanced imagery technology (3D CBCT as an instance) is primordial as for obtaining accurate results. The study also recommends a functional analysis as for studying thoroughly the symphysis dimension in skeletal malocclusion.
Attendees of the viva session were a number of academics, researchers, students of the major, the researcher’s colleagues and some of family members.
