Hyeon-Shik Hwang1, Il-Sun Youn, Ki-Heon Lee, Hoi-Jeong Lim. 1. Department of Orthodontics, 2nd Stage of Brain Korea 21, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea. hhwang@chonnam.ac.kr
Abstract
INTRODUCTION: The purposes of this study were to classify patients with facial asymmetry by using the cluster analysis and to evaluate the characteristics of the resultant groups. METHODS: One hundred consecutive orthodontic patients who had frontal cephalograms and photographs taken for the diagnosis of facial asymmetry were included in the sample. A cluster analysis was used to classify the subjects, with craniofacial measurements related to asymmetry obtained from the cephalograms and photographs. RESULTS: The subjects were divided into 5 clusters based on only 3 variables from the frontal cephalograms: menton deviation, apical base midline discrepancy, and vertical difference of right and left antegonion. The results of the ANOVA test according to the variables showed statistically significant differences between the groups in all variables, indicating that each group can be easily identified with the variables. CONCLUSIONS: The results suggest that patients with facial asymmetry can be classified simply based on some variables on frontal cephalograms, and this classification can be helpful in proper diagnosis and treatment planning for these patients.
INTRODUCTION: The purposes of this study were to classify patients with facial asymmetry by using the cluster analysis and to evaluate the characteristics of the resultant groups. METHODS: One hundred consecutive orthodontic patients who had frontal cephalograms and photographs taken for the diagnosis of facial asymmetry were included in the sample. A cluster analysis was used to classify the subjects, with craniofacial measurements related to asymmetry obtained from the cephalograms and photographs. RESULTS: The subjects were divided into 5 clusters based on only 3 variables from the frontal cephalograms: menton deviation, apical base midline discrepancy, and vertical difference of right and left antegonion. The results of the ANOVA test according to the variables showed statistically significant differences between the groups in all variables, indicating that each group can be easily identified with the variables. CONCLUSIONS: The results suggest that patients with facial asymmetry can be classified simply based on some variables on frontal cephalograms, and this classification can be helpful in proper diagnosis and treatment planning for these patients.
Authors: Sergio Olate; Henrique Duque Netto; Jaime Rodriguez-Chessa; Juan Pablo Alister; Jose de Albergaria-Barbosa; Márcio de Moraes Journal: Int J Clin Exp Med Date: 2013-09-25
Authors: Shuncheng Zhou; Juanjuan Yan; Hu Da; Yang Yang; Na Wang; Wenyong Wang; Yin Ding; Shiyao Sun Journal: PLoS One Date: 2013-03-29 Impact factor: 3.240