Axelsson G, Kirveskari P
Am J Phys Anthropol. 1977 Sep;47(2):321-4. doi: 10.1002/ajpa.1330470212.
Three local populations from Northeast Iceland are surveyed for the occurrence of the deflecting wrinkle of the metaconid on second deciduous and first permanent lower molars. The trait occurs more frequently on dm2 than on M1, and no sexual dimorphism is found, as expected. However, the frequencies are clearly within those predicted by the Mongoloid dental complex for Mongoloid populations. It is therefore suggested that the inclusion of the deflecting wrinkle in the Mongoloid dental complex be re-evaluated, and the racial diagnostic value of the trait taken with reservation.
对冰岛东北部的三个当地人群的第二乳磨牙和第一恒下磨牙上的下原尖偏斜褶皱的出现情况进行了调查。该性状在乳磨牙2上比在第一恒磨牙上出现得更频繁，并且正如预期的那样，未发现两性异形。然而，其频率明显在蒙古人种牙齿组合对蒙古人种群体预测的范围内。因此，建议重新评估将偏斜褶皱纳入蒙古人种牙齿组合的情况，并对该性状的种族诊断价值持保留态度。
