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Keimyung Medical Journal 1988;7(2):322-329.
A Study on the Distribution and the Types of Malocclusion of Orthodontic Patients
교정환자의 내원상황 및 부정교합 양상에 대한 연구
서혜경
Abstract
A study was performed to investigate the distribution and the types of malocclusion of orthodontic patients through the diagnostic chart; cephalogram and study model. The subjects consisted of 173 orthodontic patients (85 male; 88 female); who visited the Dental department of Dongsan Medical Center from Jan. 1st; 1987 to Oct. 31st; 1988. The results were as follows: The ratio of male and female visitors was 1 : 1.04. Among total visitors; 8?11 age group was 41.0% and over 20 age group was 16.7%. The regional distribution showed that Jung Gu; Seo Gu and Nam Gu were 47.4% and Kyung Buk and Kyung Nam; 22.0%. Class I malocclusion was 49.1%; class IT; 22. 0% and class I 28.9% in the distribution of malocclusion by Angle's classification. Deciduous dentition was 2.9%; mixed dentition; 42.8% and permanent dentition; 49.3%. The distribution of patients by ODI showed that ODI of 56. 4% of class I malocclusion was 66?75 and that of 50. 0% of class I was less than 60. The distribution of patients by APDI showed that the APDI of 72.8% of class I malocclusion was 76?85; that of 84. 9% of class I; 71?85; that of 58.0% of class HI; 86?95; and there was no significant difference between APDI and Angle's classification.
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