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Estimation of the age of majority through radiographic evaluation of the third molar maturation degree

BACKGROUND: Although the third molar is the tooth with the greatest anatomical and developmental variability, some authors consider it important to estimate whether a subject is of legal age or not. The Demirjian’s technique is the most widely used tool to estimate dental age and was therefore used...

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Autores principales: Marrero-Ramos, Miriam del Carmen, López-Urquía, Lourdes, Suárez-Soto, Aldo, Sánchez-Villegas, Almudena, Vicente-Barrero, Mario
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medicina Oral S.L. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7211378/
https://www.ncbi.nlm.nih.gov/pubmed/32040461
http://dx.doi.org/10.4317/medoral.23385
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author Marrero-Ramos, Miriam del Carmen
López-Urquía, Lourdes
Suárez-Soto, Aldo
Sánchez-Villegas, Almudena
Vicente-Barrero, Mario
author_facet Marrero-Ramos, Miriam del Carmen
López-Urquía, Lourdes
Suárez-Soto, Aldo
Sánchez-Villegas, Almudena
Vicente-Barrero, Mario
author_sort Marrero-Ramos, Miriam del Carmen
collection PubMed
description BACKGROUND: Although the third molar is the tooth with the greatest anatomical and developmental variability, some authors consider it important to estimate whether a subject is of legal age or not. The Demirjian’s technique is the most widely used tool to estimate dental age and was therefore used in our study to assess possible correlation between the age of majority and the maturational degree of the lower third molars, evaluated through radiographic images. MATERIAL AND METHODS: This observational transversal study was conducted on 180 panoramic radiographs from consecutive patients. The degree of maturation of the lower third molar was independently classified by two observers, according to the Demirjian´s maturational stage method. RESULTS: A total of 180 patients – 65 men (36.12%) and 115 women (63.88%) – were included (mean age 21.6 years; standard deviation 5.2). The age range of our subjects corresponded to maturational stages D to H in the Demirjian’s classification. A logistic regression analysis showed that subjects classified into the highest maturational stage H had a significantly higher probability of being considered of legal age by both observers, as compared with subjects in the lowest stage D. Inter-observer agreement was very high. Gender predictive capacity was not observed. CONCLUSIONS: Our results showed that subjects with the lower third molars in the highest maturational stage could be estimated to be older than 18 years and therefore considered of legal age, a finding also reported by other authorsThe Demirjian´s tooth maturational stage method, applied to the lower third molars, can be reliably used to estimate whether an individual is of legal age (18 years or older). High concordance between different observers using this method can be expected. Key words:Age estimation, third molar development, panoramic radiographs, Demirjian’s method, dental age estimation, forensic odontology.
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spelling pubmed-72113782020-05-14 Estimation of the age of majority through radiographic evaluation of the third molar maturation degree Marrero-Ramos, Miriam del Carmen López-Urquía, Lourdes Suárez-Soto, Aldo Sánchez-Villegas, Almudena Vicente-Barrero, Mario Med Oral Patol Oral Cir Bucal Research BACKGROUND: Although the third molar is the tooth with the greatest anatomical and developmental variability, some authors consider it important to estimate whether a subject is of legal age or not. The Demirjian’s technique is the most widely used tool to estimate dental age and was therefore used in our study to assess possible correlation between the age of majority and the maturational degree of the lower third molars, evaluated through radiographic images. MATERIAL AND METHODS: This observational transversal study was conducted on 180 panoramic radiographs from consecutive patients. The degree of maturation of the lower third molar was independently classified by two observers, according to the Demirjian´s maturational stage method. RESULTS: A total of 180 patients – 65 men (36.12%) and 115 women (63.88%) – were included (mean age 21.6 years; standard deviation 5.2). The age range of our subjects corresponded to maturational stages D to H in the Demirjian’s classification. A logistic regression analysis showed that subjects classified into the highest maturational stage H had a significantly higher probability of being considered of legal age by both observers, as compared with subjects in the lowest stage D. Inter-observer agreement was very high. Gender predictive capacity was not observed. CONCLUSIONS: Our results showed that subjects with the lower third molars in the highest maturational stage could be estimated to be older than 18 years and therefore considered of legal age, a finding also reported by other authorsThe Demirjian´s tooth maturational stage method, applied to the lower third molars, can be reliably used to estimate whether an individual is of legal age (18 years or older). High concordance between different observers using this method can be expected. Key words:Age estimation, third molar development, panoramic radiographs, Demirjian’s method, dental age estimation, forensic odontology. Medicina Oral S.L. 2020-05 2020-02-10 /pmc/articles/PMC7211378/ /pubmed/32040461 http://dx.doi.org/10.4317/medoral.23385 Text en Copyright: © 2020 Medicina Oral S.L. http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Marrero-Ramos, Miriam del Carmen
López-Urquía, Lourdes
Suárez-Soto, Aldo
Sánchez-Villegas, Almudena
Vicente-Barrero, Mario
Estimation of the age of majority through radiographic evaluation of the third molar maturation degree
title Estimation of the age of majority through radiographic evaluation of the third molar maturation degree
title_full Estimation of the age of majority through radiographic evaluation of the third molar maturation degree
title_fullStr Estimation of the age of majority through radiographic evaluation of the third molar maturation degree
title_full_unstemmed Estimation of the age of majority through radiographic evaluation of the third molar maturation degree
title_short Estimation of the age of majority through radiographic evaluation of the third molar maturation degree
title_sort estimation of the age of majority through radiographic evaluation of the third molar maturation degree
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7211378/
https://www.ncbi.nlm.nih.gov/pubmed/32040461
http://dx.doi.org/10.4317/medoral.23385
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