THE STUDIES ON THE CHARACTERISTICS IN THE PRIMARY DENTITION

Kim,  Jin-Tae; Park,  Byoung-Duck; Yoon,  Byoung-Ee

J Korean Dent Assoc > Volume 10(6); 1972 > Article

Journal of Korean Dental Association 1972;10(6):347-349.
Published online June 30, 1972.

유치치열의 특이성에 대한 고찰

김진태¹, 박병덕², 윤병이³

^¹서울대학교 치과대학 소아치과학교실
^²서울대학교 치과대학 소아치과학교실
^³서울대학교 치과대학 소아치과학교실

THE STUDIES ON THE CHARACTERISTICS IN THE PRIMARY DENTITION

Jin-Tae Kim¹, Byoung-Duck Park², Byoung-Ee Yoon³

¹Dept. of Pedodontics, College of Dentistry Seoul National University
²Dept. of Pedodontics, College of Dentistry Seoul National University
³Dept. of Pedodontics, College of Dentistry Seoul National University

Abstract

The authors selected fifty children aged 2 to 4 years who had normal occlusion from the patients admitted at the Pedodontic Department in the Infirmary of Dental College, S.N.U. Study casts were taken and observed on the primate spaces and terminal planes which are characteristics of primary dentition. The results were as follows: 1. The percentages of terminal planes were 56%±7.02 in mesial step type, 38.0%±6.86 in straight step type, 6.0%±3.36 in distal step type, respectively. 2. The percentages of primate space were 80%±5.09 in maxillary dental arch and 5.0%±7.06 in mandibular dental arch. 3. The percentage of mesial step type in korean children was higher in comparison with that in foreign children and the percentage of the primate space was about the same in korean & foreign children.