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KMID : 0378219740040010021
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Dental Radiology
1974 Volume.4 No. 1 p.21 ~ p.30
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A LATERAL CEPHALOMETRIC STUDY OF CRANIOFACIAL VARIATION IN KOREAN CHILD TWINS
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Abstract
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A study was performed to investigate th degree of similarities and differences in componets of caraniofacial ecomplex between Korean twins and normal children by lateral cephalometric analysis.
Dimensions of N-N, S-Ba, Go-Me, Ar-Go and Ar-Me were plotted against linear measurement and angles of N-S-Ba and gonial against angular measurement in twins and control groups.
The lateral cephalograms of twin were composed of 88 twins aged from 7 to 12 : 44 males aged 10,65 and 44 females aged 9.55, while those of 50 normalities were composed of 25 males and 25 females aged 10.9 respectively.
In order to analyze gowith proportion and sexual differences, twins were divided into 3 groups according to two year age interals and the suthor compared male with female in 3 gruops. For the purpose of observing similarities and differences in tiwins and normalities by sex, total twins were compared with normalities.
The obtained results were as follows:
1. There was no difference in carniofacial complex between twins and normalities.
2. In general, the measurements of male of were larger than those of female both twins and normalities, but there were no statistical significances of sexual differences in both groups.
3. The growith proportion of mandible by aging was larger than that of face
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