3. 제Ⅲ급부정교합자 271명중 하악골의 발육부전으로 인한 경우가 88명 (32.5%)으로 가장 많았고, 제Ⅲ급부정교합자 275명 중 가성 (Pseudo- type)이 94명 (34.2%). 하악골의 과다성 장으로 인한 경우가 82명 (29.8%)으로 나타났다.
4. 파개교합(deep bite)의 발생빈도는 제Ⅱ급부정교합군에서 가장 높게 나타났다.
5 개교(open bite)와 절단면교합(edge to edge bite)은 제Ⅲ급부정교합군에서 가장 높게 나타났다.
6. 내원환자의 남녀별 분포를 보면 남자가 426명 (35%),여자가 791명 (6j%)으로 여자가 남자보다 1.8배 많았다.
7. 내원환자의 연령별 분포를 보면 9∼13세가 572명 (47%)으로 가장 많았다.
8. 내원환자의 거주지별 분류를 보면 전체의 64.9%가 본 병원에서 가까운 거리에 거주하고 있었다
[영문]
The author was to study the type and distribution of malocclusion in the 1217 patients with diagnostic charts, cephalograms and study models, who have been treated from-March,1973 to August, 1982 in the Infirmary of Dental College, Yon Sei University, Department of ortho-dontics.
The results were as follows;
1. In the Angle's classification of malocclusion, it was presented that class Ⅰ malocclusion was 671 persons (55.1%), class Ⅱ division 1 malocclusion was 241 persons (19.8%),.class Ⅱ division 2 malocclusion was 30 persons (2.5%) and class Ⅲ malocclusion was 275 persons (22.6%).
2. In the Angle's class Ⅰ malocclusion, the crowding was most remarkable (39%)
3. In the Angle's class Ⅱ malocclusion, 88 persons (32.5%) were due to the undergrowth of the mandible, and deep bite was most frequent.
4. In the Angle's class Ⅱ malocclusion, 94 persons (34.2%) were in the pseudo type, 84 persons(29.8%) were due to the overgrowth of the mandible, and openbite and edge to edge bite were most frequent.
5. In the sexual distribution of the patients, female patients were 791 persons (65%), male patients were 426 persons (35%), and the number of females was 1.8 times than that of males.
6. In the age distribution of the patients,572 persons (47%) were in the 9-13 years old.
7. In the regional distribution of the patients, most of them lived near the hospital.