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VOLUME 19 , ISSUE 12 ( December, 2018 ) > List of Articles

ORIGINAL ARTICLE

Predictability of Craniofacial Skeletal Age with Geometric Morphometrics

Antoine Saadé, Pascal Baron, Ziad EF Noujeim, Elie Arouk, Dany Azar

Keywords : Centroid size, Cone beam computed tomography, Geometric morphometrics, Prospective cross-sectional study, Skeletal age

Citation Information : Saadé A, Baron P, Noujeim ZE, Arouk E, Azar D. Predictability of Craniofacial Skeletal Age with Geometric Morphometrics. J Contemp Dent Pract 2018; 19 (12):1494-1501.

DOI: 10.5005/jp-journals-10024-2455

License: CC BY-NC 4.0

Published Online: 01-12-2018

Copyright Statement:  Copyright © 2018; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim: This study aims to estimate skeletal age of craniofacial shape obtained from cone beam computed tomography (CBCT)-defined facial and basicranial landmarks using geometric morphometrics method in a random sample of growing patients, and explore the correlation between craniofacial shape and skeletal age as determined from hand and wrist radiograph. Materials and methods: Generalized Procrustes analysis (GPA) of craniofacial shape with estimation of centroid size was performed on CBCTs of 48 growing patients (mean age 11.7 ± 1.5 years). Greulich and Pyle method for skeletal age assessment were used for correlation with centroid size. Correlation among the variables relied on Pearson\'s coefficient and its 95% confidence interval was estimated. The model\'s R2 was calculated, (Cook\'s distances, Mahalanobis distances, leverage values, and studentized residuals) and multiple regression analysis performed using the Statistical Package for the Social Sciences (SPSS) version 22. Results: Mean skeletal age was 11.9 ± 2.4 years. Centroid size (151.5 ± 7.2) was significantly correlated with chronological age (R = 0.616, 95% CI 0.355–0.789, p < 0.01) and skeletal age (R = 0.605, 95 % CI 0.331–0.794, p < 0.01). Conclusion: A new equation for determining craniofacial skeletal age was developed, using the centroid size of the craniofacial frame, gender, and the known chronological age. Clinical significance: A CBCT may be used for skeletal age assessment without additional hand wrist radiograph.


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