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Analysis of the relationship between the morphology of the palate and facial skeletal patterns in Class III malocclusion using structural equation modelling
Author(s) -
Ahn Mi So,
Shin Sang Min,
Choi YongSeok,
Wu TeJu,
Ko ChingChang,
Yamaguchi Tetsutaro,
Maki Koutaro,
Kim YongIl
Publication year - 2019
Publication title -
orthodontics and craniofacial research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 55
eISSN - 1601-6343
pISSN - 1601-6335
DOI - 10.1111/ocr.12283
Subject(s) - principal component analysis , malocclusion , maxilla , orthodontics , structural equation modeling , mathematics , population , morphology (biology) , cone beam computed tomography , latent variable , dentistry , geometry , medicine , biology , statistics , computed tomography , surgery , environmental health , genetics
Structured Abstract Introduction The present study investigated the relationship between facial skeletal patterns and morphology of the palate in adult patients with Class III malocclusion using structural equation modelling ( SEM ). Setting and sample population One hundred cone beam computed tomography images of Class III adults were evaluated for skeletal measurements. Materials and methods The skeletal measurements were classified into the vertical, anteroposterior and transverse group based on factor analysis. 3D scanning model of the maxilla was analysed by Generalized procrustes analysis ( GPA ) and principal component analysis ( PCA ). Structural equation modelling was used to analyse relationship among the skeletal and morphometric factors. Results According to the factor analysis, latent variables were extracted by each skeletal variable. First principal component ( PC 1) and PC 2 of palatal morphology were used to analyse relationship with skeletal variables. As results of the structural equation model, the transverse latent variable had the most influence on PC 1, followed by vertical and anteroposterior variables. This result means that as the facial width increases, the palate becomes narrower, deeper and longer. Conclusions The relationship between the skeletal pattern with Class III malocclusion and palatal morphology was analysed through SEM . The transverse facial skeletal pattern showed the highest correlation with PC 1 of palatal morphology.