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Published in: International Journal of Legal Medicine 1/2019

01-01-2019 | Original Article

The timing of permanent tooth development in a Black Southern African population using the Demirjian method

Authors: Temitope A. Esan, Lynne A. Schepartz

Published in: International Journal of Legal Medicine | Issue 1/2019

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Abstract

Background

Many aspects of growth have been documented for Black Southern African children, yet their dental development has not been comprehensively investigated.

Aim

The present study was designed to provide information on age of attainment of dental development stages in Southern African children and to compare the findings with other populations.

Method

This was a community-based cross-sectional study of 642 children (270 males and 372 females). Panoramic radiographs of children aged 5 to 20 years were assessed using Demirjian’s eight stages of permanent tooth formation and age was estimated using Demirjian’s method. Resulting dental ages were compared to the chronological ages. Probit regression analysis was employed to calculate the mean age of attainment of the developmental stages for the seven left mandibular teeth. Maturity scores and age of attainment were compared by sex and with published data on other populations.

Results

Females show significantly advanced dental maturity and dental ages, as well as earlier attainment of all stages of mineralization, compared to males (p < 0.05). The Demirjian method overestimated dental age in both males (0.8 ± 1.02 years) and females (1.0 ± 0.98 years). Cross-population comparisons illustrate that Black Southern African children are generally advanced in dental maturity compared to children of European and Asian ancestry.

Conclusion

The Demirjian method significantly overestimated the chronological ages of Black Southern African males and females. Southern Africans attain dental maturity earlier than South Korean, Canadian, and Belgian children. These differences in dental maturity clearly illustrate the need for population-specific, rather than global, dental maturity standards.
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Metadata
Title
The timing of permanent tooth development in a Black Southern African population using the Demirjian method
Authors
Temitope A. Esan
Lynne A. Schepartz
Publication date
01-01-2019
Publisher
Springer Berlin Heidelberg
Published in
International Journal of Legal Medicine / Issue 1/2019
Print ISSN: 0937-9827
Electronic ISSN: 1437-1596
DOI
https://doi.org/10.1007/s00414-018-1968-4

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