Quantitative evaluation of midpalatal suture maturation via fractal analysis
곽경호, 김성식, 김용일, 김용덕,
소속 상세정보
곽경호 ( Kwak Kyoung-Ho ) - Pusan National University Dental Hospital Department of Orthodontics
김성식 ( Kim Seong-Sik ) - Pusan National University Dental Hospital Department of Orthodontics
김용일 ( Kim Yong-Il ) - Pusan National University Dental Hospital Department of Orthodontics
김용덕 ( Kim Yong-Deok ) - Pusan National University Dental Hospital Department of Orthodontics
KMID : 0361920160460050323
Abstract
Objective: The purpose of this study was to determine whether the results of fractal analysis can be used as criteria for midpalatal suture maturation evaluation.
Methods: The study included 131 subjects aged over 18 years of age (range 18.1?53.4 years) who underwent cone-beam computed tomography. Skeletonized images of the midpalatal suture were obtained via image processing software and used to calculate fractal dimensions. Correlations between maturation stage and fractal dimensions were calculated using Spearman’s correlation coefficient. Optimal fractal dimension cut-off values were determined using a receiver operating characteristic curve.
Results: The distribution of maturation stages of the midpalatal suture according to the cervical vertebrae maturation index was highly variable, and there was a strong negative correlation between maturation stage and fractal dimension (?0.623, p < 0.001). Fractal dimension was a statistically significant indicator of dichotomous results with regard to maturation stage (area under curve = 0.794, p < 0.001). A test in which fractal dimension was used to predict the resulting variable that splits maturation stages into ABC and D or E yielded an optimal fractal dimension cut-off value of 1.0235.
Conclusions: There was a strong negative correlation between fractal dimension and midpalatal suture maturation. Fractal analysis is an objective quantitative method, and therefore we suggest that it may be useful for the evaluation of midpalatal suture maturation.
키워드
Cone-beam computed tomography; Midpalatal suture; Rapid palatal expansion; Fractal analysis
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