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Biology Articles » Anatomy & Physiology » Anatomy, Human » Morphological Comparison Between Brazilian's Mandibles and Populations from Four Continents

Morphological Comparison Between Brazilian's Mandibles and Populations from Four Continents

PRADO, Felippe Bevilacqua and CARIA, Paulo Henrique Ferreira

Abstract: The mandibles found in different regions of the planet present considerable morphological differences, propounding questions about the morphological changes and characteristics of the human's mandibles. The racial plurality and the consequent miscegenation of the Brazilian population must to offer morphological changes. Thirteen measurements were used in this research to analyze and compared the morphological characteristics of the one hundred Brazilian human mandibles, with mandible's dimensions of the Australians, Asiatic, Europeans, and Africans. The significant and highly significant differences in means values were calculated by testt student, p < 0.05 andp < 0.01, respectively. Were observed highly expressive differences in the analyzed dimensions, what reflect the presence of the anatomic variations in the mandible's morphology of the different populations. The Europeans mandibles show mandibular ramus narrower than when compared with the Brazilians, while the Asiatic show larger mandibles, however the height of the mandibular symphysis is smaller. Several aspects can determine the morphological differences met, like adaptations of the estomatogn√°thic system came of the bony plasticity promoted by the diet's consistency or aforesaid caused by the racial miscegenation.

Keywords: Mandible; Morphology; Morphometry; Brazil.

Full text available in Spanish: Int. J. Morphol., June 2007, vol.25, no.2, p.323-327.

 


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