モアレトポグラフィー法による日本人女性と台湾人女性の顔面形態の比較

抄録

It is difficult to identify the race between Japanese and Taiwanese because Taiwanese are thought to be one of the origins of Japanese. The purpose of this study was to investigate the racial differences of the facial morphology between Japanese and Taiwanese females. Material consisted of 104 standardized Moire photographs. Fifty-three were of Japanese females and 51 of Taiwanese females. The width and the height of each facial part were measured. Forty-four measurements obtained from each standardized Moire photograph were used to evaluate the interracial differences by multivariate analyses. The results were as follows : 1) R-mode cluster analysis and principal component analysis were applied to the data to make clear the correlations between 44 variables. Ten clusters were constructed at the level of seventy-five similarities in R-mode cluster analysis and eight factors were obtained in principal component analysis. 2) The data were subjected to a stepwise discriminant function analysis using the original 44 variables. Six variables (X5, X6, Z1, Y3, Y28, Z7) were selected as the best discriminators. The incidence of correctly classified cases was 95.19%. 3) The selected variables showed significant differences at the level of 0.1% in Student's t-test. X5, X6 and Z1 in Taiwanese females were larger than ones in Japanese females. On the other hand Y3, Y28 and Z7 in Japanese females were larger than ones in Taiwanese females. 4) Fourier coefficients were caluculated from each cross section at the level of the buccal, nose, and lower lip and the sagittal section at the midline. The comparison of the mean patterns between Japanese and Taiwanese females supported the results of the linear measurements.