<研究報告>ヒト永久歯歯冠径の左右差間相関

概要

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Right-left asymmetry was examined for the crown diameters of all the permanent teeth except the third molars of both jaws on the basis of a sample consisting of 161 male and 144 female Japanese. The fluctuating asymmetry was confirmed to be statistically significant in almost all the teeth, as was expected. Directional asymmetry was found in some particular teeth consistently in both sexes and it was considered to be due possibly to systematic measurement errors. Antisymmetry was inferred not to be present in any of the tooth crown diameters. Positive correlations were detected between the signed antimeric differences of the buccolingual crown diameters, especially of maxillary cheek teeth. These correlations in a complex of the crown diameters were suspected to be referable to some asymmetry of the jaws forming in the early developmental processes.
国立科学博物館の論文