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Journal of Dental Research
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Sexual Dimorphism in the Emergence of the Deciduous Teeth

R. Tanguay

Human Growth Research Centre, Université de Montreal, 2801 Edouard Montpetit, Montreal, Quebec, Canada H3T 1J6

A. Demirjian

Human Growth Research Centre, Université de Montreal, 2801 Edouard Montpetit, Montreal, Quebec, Canada H3T 1J6

H.W. Thibault

Human Growth Research Centre, Université de Montreal, 2801 Edouard Montpetit, Montreal, Quebec, Canada H3T 1J6

Exact ages of emergence of the twenty deciduous teeth have been investigated on a longitudinal sample of 195 French-Canadian children (113 boys and 82 girls). A multivariate analysis of variance yielded a significant overall sex difference (p<O. 0001).

It has been found that the emergence of the deciduous dentition in boys is more precocious than that in girls by about one month; this difference is present at the emergence of the upper central incisor and is maintained henceforth. The only notable exception to this pattern is the emergence of the first molars.

Results of the present study, combined with those of previous research, suggest that sexual dimorphism in the emergence of the deciduous teeth could be mediated through ethnic factors.

Journal of Dental Research, Vol. 63, No. 1, 65-68 (1984)
DOI: 10.1177/00220345840630011601
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