Dentofacial transverse development in Koreans according to skeletal maturation: A cross-sectional study
황순신, Noh Yoon-Jeong, 최윤정, 정주령, 이혜선, 김경호,
소속 상세정보
황순신 ( Hwang Soon-Shin ) - Gangnam Severance Dental Hospital Department of Orthodontics
( Noh Yoon-Jeong ) - Gangnam Severance Dental Hospital Department of Orthodontics
최윤정 ( Choi Yoon-Jeong ) - Yonsei University College of Dentistry Department of Orthodontics
정주령 ( Chung Choo-Ryung ) - Gangnam Severance Dental Hospital Department of Orthodontics
이혜선 ( Lee Hye-Sun ) - Yonsei University College of Medicine Biostatistics Collaboration Unit
김경호 ( Kim Kyung-Ho ) - Gangnam Severance Dental Hospital Department of Orthodontics
Abstract
Objective: The aim of this study was to establish the normative data of dentofacial transverse dimensions according to the skeletal maturation stage in Korean adolescents with good occlusion, assess gender differences and determine correlations between transverse variables.
Methods: A total of 577 Korean subjects between ages 7 to 19 years and exhibiting skeletal Class I occlusion were categorized by skeletal maturation index (SMI) of Fishman using hand-wrist radiographs. Dentofacial transverse dimensions were assessed using posteroanterior cephalograms. Independent two-sample t-tests were used to analyze differences between genders. Pearson correlation coefficient was used to determine the correlation between transverse measurements.
Results: Dentofacial transverse norms relevant to skeletal maturation stages were established. The average maxillomandibular width difference and ratio at growth completion was 22.16 mm and 77.01% for males; 23.70 mm and 74.06% for females, respectively. Males had greater facial, maxillary and mandibular widths compared to females at every SMI stage. The maxillary and mandibular intermolar widths showed the strongest correlation for both sexes (r = 0.826 for males, r = 0.725 for females).
Conclusions: Den tofacial transverse norms of Korean adolescents were established according to developmental stage. All de ntofacial widths were greater in males at growth completion. Maxillary and mandibular intermolar widths were strongly correlated. This study may serve as a guideline for the assessment of dentofacial transverse growth according to skeletal maturation stage in Korean adolescents with good occlusion.
키워드
Transverse development; Skeletal maturation; Growth and develop-ment; Posteroanterior cephalometrics
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