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韓國人兒童에 있어서 脘骨과 齒齡에 대한 比較硏究
INTERRELATION IN THE CARPAL BONE INDEX AND ORTHOPANTOMOGRAPHIC DENTAL AGES ON THE KOREAN CHILDREN

치과방사선 1973년 3권 1호 p.7 ~ 18

소속 상세정보

安炯珪/Ahn, Hyung Kyu 留東洙/朴兌源/You, Dong Soo/Park, Tae Won

KMID : 0378219730030010007

Abstract

The authors have taken the x-ray films of carpal bone and orthopantomographs in Korean children to research the degree of ossification of carpal bone, that of calcification of tooth in jaw bone, the eruption rate of tooth, and the completion rate of apical foramen, and have compared the bone age and tooth age.
We have gained a series of interesting conclusions to dare to report.
1. The ossification of carpal bone and the growth of tooth had processed proportionally to each other.
2. Both the bone age and tooth age were earier in the female than in the male.
3. The completion of tooth crown formation and that of tooth root formation had processed proportionally to each other, and the general tendency of process was the earliest in the mandibular first moloar and the latest in the second molar.
4. The eruption of tooth was the earliest in the mandibular first molar. The other teech had erupted in th following orders : the central incisor, the lateral incisor, the first premolar, the second premolar, the canine and the second molar.