Torus mandibularis in 45,X females (Turner syndrome)

Autor:	J. Varrela, Lassi Alvesalo, John T. Mayhall
Rok vydání:	1996
Předmět:	medicine.medical_specialty Dentition Chromosome Torus Biological evolution Biology Torus mandibularis Y chromosome medicine.disease Sexual dimorphism Endocrinology Anthropology Internal medicine Turner syndrome medicine Anatomy
Zdroj:	American Journal of Physical Anthropology. 101:145-149
ISSN:	1096-8644 0002-9483
DOI:	10.1002/(sici)1096-8644(199610)101:2<145::aid-ajpa2>3.0.co;2-1
Popis:	Ninety-three Finnish females with a 45,X chromosome constitution, 78 first-degree female, and 37 first-degree male relatives were examined to determine the frequency and expression of torus mandibularis. The results indicate that among adults the frequency of the trait was significantly lower and the expression weaker in the 45,X females than in male control relatives. A similar trend was observed in comparison to normal females. In juveniles the trend was reversed. Our findings suggest that the sex chromosomes may have an influence on the occurrence, expression, and timing of development of the mandibular torus. Sexual dimorphism in the manifestation of torus mandibularis may result particularly from the effect of the Y chromosome on growth.
Databáze:	OpenAIRE
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