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BMC Oral Health
Published in: BMC Oral Health 1/2023

Open Access 01-12-2023 | Research article

Chronology of permanent teeth mineralization in Brazilian individuals: age estimation tables

Authors: Barbara Kuhnen, Clemente Maia da Silva Fernandes, Franciéllen de Barros, José Scarso Filho, Marcelo Gonçalves, Mônica da Costa Serra

Published in: BMC Oral Health | Issue 1/2023

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Abstract

Background

Age is important in forming the uniqueness of individuals. When chronological age is not available, age estimation is required, particularly in court cases. The mineralization chronology of permanent teeth is a valuable tool for age estimation of subadults. This study aimed to evaluate the mineralization stages of permanent teeth of Brazilian subjects from imaging exams, using the classification by Moorrees et al. modified by the authors, to verify the existence of correlation between the chronology of mineralization stages and sex and to prepare numerical tables of the chronology of dental mineralization stages for Brazilian individuals.

Methods

Digital panoramic radiographs of 1100 living Brazilian individuals of both sexes, aged between 2 and 25 years, born between 1990 and 2018, from the image bank of a Dental Radiographs and Documentations clinic located in the city of Araraquara, SP, Brazil. The images were evaluated according to the level of crown and root development and classified according to the stages proposed by Moorrees et al. (Am J Phys Anthropol 21: 205–213, 1963) adapted by the authors. All analyses were performed in the R software. Descriptive and exploratory analyses were performed on all data. For intra- and inter-examiner analyses, the rate of agreement and Kappa statistics at a 95% confidence interval were used. Kappa was interpreted according to Landis and Koch.

Results

Only upper and lower canines showed significant differences between the sexes (p < 0.05), with higher average ages for men. The findings were presented in tables, as well as age estimates with 95% confidence intervals for each mineralization stage and each tooth.

Conclusion

In the present study, we evaluated the mineralization stages of permanent teeth of Brazilian subjects from digital panoramic radiographs and found no correlation between the chronology of mineralization stages and sex, except for canines. From the obtained results, numerical tables of the chronology of dental mineralization stages were prepared.
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Metadata
Title
Chronology of permanent teeth mineralization in Brazilian individuals: age estimation tables
Authors
Barbara Kuhnen
Clemente Maia da Silva Fernandes
Franciéllen de Barros
José Scarso Filho
Marcelo Gonçalves
Mônica da Costa Serra
Publication date
01-12-2023
Publisher
BioMed Central
Published in
BMC Oral Health / Issue 1/2023
Electronic ISSN: 1472-6831
DOI
https://doi.org/10.1186/s12903-023-02837-y

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