Abstract
Abstract Factor analysis on mesiodistal crown diameters of the deciduous dentition was carried out using samples from Japanese and those from Australian Aborigines.The purposes of this study are to find the main factors which control size and proportion of the dentition, and to compare different populations on the basis of factors obtained.The results are summarized as follows: 1) three factors were found to be largely responsible for characterizing crown measurements of the deciduous dentition;2) the factors are reproducible in different populations;and 3) comparison based on the factors provides a clear picture on characteristics of each population.Some problems to be analysed in the future through such a technique were also discussed.
