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 |
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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. |
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