Date of Award
2023
Department
Department of Orthodontics
First Advisor
Jonas Bianchi
First Committee Member
Yongjong Park,
Second Committee Member
Olivia Yue
Third Committee Member
Marie M. Tolarova,
Abstract
Objectives: This study aimed to three-dimensionally analyze the effects of pre-surgical nasoalveolar molding in unilateral cleft lip and palate patients. Methods: The sample was collected from three centers and consisted of 132 digital dental casts of patients pre- and post- NAM. Landmarks and measurements were identified on each cast and the changes from pre- to post-NAM were recorded and analyzed. Results: Post-NAM, we observed a mean decrease of 5.18mm in 3D cleft width, 1.78mm decrease in sagittal cleft gap, 1.34mm decrease in the anterior arch width, 2.27mm increase in the posterior arch width, a greater inward rotation of the greater segment (8.50°) compared to the lesser segment (3.09°), and an increase in arch depth (1.74mm) and internal flexion (9.20°) of the lesser segment. No statistically significant changes in the arch depth and internal flexion of the greater segment were observed. The morphological changes between pre- and post-NAM therapy were visualized by closest distance colormaps and 3D superposition assessments. Conclusions: Unilateral cleft lip and palate patients were successfully treated with traditional NAM therapy. The obtained data may serve as a foundation for a regression algorithm for the closure of cleft, allowing future fabrication of semi-automated 3D-printed NAM plates.
Recommended Citation
Suh, Yoon Weon Christina, "NASOALVEOLAR MOLDING IN UNILATERAL CLEFT LIP AND PALATE: A THREE-DIMENSIONAL ANALYSIS" (2023). Orthodontics and Endodontics Theses. 43.
https://scholarlycommons.pacific.edu/dugoni_etd/43
