A STUDY ON MAXILLARY MEDIAN DIASTEMA OF 'Y' PRIMARY SCHOOL CHILDREN

Hahn,  Se-Hyun

J Korean Dent Assoc > Volume 19(12); 1981 > Article

The Journal of The Korean Dental Association 1981;19(12):1039-1044.
Published online December 31, 1981.

'Y' 국민학교 아동의 상악중절치 치간이개증에 관한 연구

한세현

Dept. of Pedodontics, College of Dentistry, S.N.U.

A STUDY ON MAXILLARY MEDIAN DIASTEMA OF 'Y' PRIMARY SCHOOL CHILDREN

Se-Hyun Hahn

Abstract

The author surveyed on maxillary median diastema of 1440 (male: 740, female:700) 'Y' primary school children aged from 6 to 12 and obtained the following results. 1. The prevalence of maxillary median diastema was 16.08% in male, 14.00% in female and 15.07% in both sexes. 2. The prevalence of maxillary median distema showed the highest rate in 8 years old children (male: 29.55%, female: 34.83%) and it showed decreasing tendency according to increasing age. 3. The prevalence of mesiodens was 0.79% and boys had higher rate than girls. 4. Mean value of 'Divergent degree' was 20.6mm in male, 20.5mm in female and mean value of 'Frenum distance' was 4.08mm in male, 41.1mm in female.