교정환자의 내원상황 및 부정교합 양상에 대한 연구

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, S대 Gu and Nam Gu were 47.4% and Kyung Buk and Kyung Nam, 22.0%. Class Ⅰ maolcclusion was 49.1%, class Ⅱ, 22.0% and class Ⅲ 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 Ⅲ 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 Ⅱ, 71-85, that of 58.0% of class Ⅲ, 86-95, and there was no significant difference between APDI and Angle's classification.