2011
DOI: 10.1002/ajpa.21485
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Abstract: The present study investigates whether the human mandible is sexually dimorphic during early postnatal development and whether early dimorphic features persist during subsequent ontogeny. We also examine whether mandibular dimorphism is linked to dimorphism of dental development. Dense CT-derived mandibular meshes of 84 females and 75 males, ranging from birth to adulthood, were analyzed using geometric morphometric methods. On the basis of the specimen's chronological ages and mineralization stages of the dec… Show more

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Cited by 104 publications
(87 citation statements)
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“…Similarly, there is no indication that there are significant sex differences in humans with respect to bone structural properties [16]. If the chin is the product of sexual selection, it has not resulted in obvious differences in biomechanical performance between males and females, despite the fact that postadolescent growth of the mandible is distinct between males and females [78]. The hypothesis of sexual selection, however, does not easily lend itself to explanations of bone hypertrophy [14].…”
Section: The Chin Results From Sexual Selectionmentioning
confidence: 99%
“…Similarly, there is no indication that there are significant sex differences in humans with respect to bone structural properties [16]. If the chin is the product of sexual selection, it has not resulted in obvious differences in biomechanical performance between males and females, despite the fact that postadolescent growth of the mandible is distinct between males and females [78]. The hypothesis of sexual selection, however, does not easily lend itself to explanations of bone hypertrophy [14].…”
Section: The Chin Results From Sexual Selectionmentioning
confidence: 99%
“…We do not distinguish between males and females in this study because of the relatively small sample size. Also, in Coquerelle et al (2011) we showed that although postnatal mandibular growth is sexually dimorphic, sex differences are very small compared with age differences and consist mainly of differences in developmental timing.…”
Section: Ct-scanned Samplementioning
confidence: 93%
“…We first estimated several sets of mandibular, muscular and dental coordinates via local linear regressions of the Procrustes shape coordinates on chronological age (Bulygina et al 2006;Coquerelle et al 2011). Then the mandibular surfaces corresponding to the regression estimates were computed using the triangulated surface of one individual and the TPS as an interpolation function (Bookstein, 1991).…”
Section: D Analyses Of the Mandibular Surfaces And Tooth Positionsmentioning
confidence: 99%
“…Given that the mandible is sexually diagnostic in humans (e.g., 46), an assessment of the likely impact of sexual dimorphism was performed. The configuration centroid sizes for males and females were found to be significantly different (two-tailed t test, P < 0.0001), with male mandibles significantly bigger than female mandibles.…”
Section: Methodsmentioning
confidence: 99%