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399024

Evaluation and Comparison of the Accuracy of Nolla and Demirjian Methods for Age Estimation in a Sample of Egyptian Children using Panoramic Radiographs (a Retrospective Study)

Article

Last updated: 07 Jan 2025

Subjects

-

Tags

Forensic medicine

Abstract

Background: Age estimation is a crucial step in forensics. For living this could be valuable in civil conflicts e.g., marriage, employment, military, and recruitment. Also, it is important in criminal cases involving rape, kidnapping, and illegal immigration. In cadavers, it could help in the identification of victims of mass disasters e.g., fires, crashes. Aim: The current study aimed at estimating the age of a sample of Egyptian children through using both Nolla and Demirjain methods, Comparing these ages with their chronological ages, and generating an equation that could be used to predict chronological age in both males and females and then assessing the accuracy of these methods. Materials & Methods: A retrospective study on dental panoramic radiographs of 180 children aged 4-16 years. The mean dental age (DA) according to the Demirjian and Nolla methods were compared to the mean chronological age (CA). Results: The mean CA of the study sample was 9.90±2.71y and 9.40±3.23y for females and males, respectively. Using the Demirjian method, the mean estimated DA was 9.38±2.09 years for females and 9.77±3.01years for males. For Nolla method, the mean estimated DA was 8.48±1.79 and 9.07±2.77years for females and males, respectively. The mean differences between the DA and CA according to the Demirjian were -0.52y and 0.37y for females and males, respectively. For Nolla method the mean differences were -1.42y and -0.33y. Conclusions: Nolla method was found to underestimate DA in Egyptian children, while the Demirjian method tends to overestimate it. But Nolla method showed more accuracy.

DOI

10.21608/ajfm.2024.293169.1140

Keywords

dental age, Age estimation, Demirjian method, Nolla method, Chronological age

Authors

First Name

Sara

Last Name

Elgaidy

MiddleName

Abdullah

Affiliation

Forensic and toxicology department,Ain shams university

Email

saraabdullah@med.asu.edu.eg

City

Egypt

Orcid

-

First Name

omnia

Last Name

eloafy

MiddleName

saad

Affiliation

Forensic and toxicology department,Ain shams university

Email

omneyasaad@med.asu.edu.eg

City

egypt

Orcid

-

First Name

hanan

Last Name

salem

MiddleName

elsayed

Affiliation

Forensic and toxicology department,Ain shams university

Email

hanansalem789@yahoo.com

City

Egypt

Orcid

0000-0002-4050-8795

First Name

magda

Last Name

ramadan

MiddleName

mokhtar

Affiliation

Forensic and toxicology department,Ain shams university

Email

magdamokhtar@gmail.com

City

Egypt

Orcid

-

First Name

raghdaa

Last Name

mostafa

MiddleName

aboelkhair

Affiliation

oral radiology department, faculty of dentistry ,Ain shams university

Email

raghdaa.mostafa@asfd.asu.sde.eg

City

Egypt

Orcid

-

Volume

44

Article Issue

1

Related Issue

52794

Issue Date

2025-01-01

Receive Date

2024-06-09

Publish Date

2025-01-01

Page Start

29

Page End

40

Print ISSN

1687-1030

Online ISSN

2636-3356

Link

https://ajfm.journals.ekb.eg/article_399024.html

Detail API

http://journals.ekb.eg?_action=service&article_code=399024

Order

399,024

Type

Original Article

Type Code

665

Publication Type

Journal

Publication Title

Ain Shams Journal of Forensic Medicine and Clinical Toxicology

Publication Link

https://ajfm.journals.ekb.eg/

MainTitle

Evaluation and Comparison of the Accuracy of Nolla and Demirjian Methods for Age Estimation in a Sample of Egyptian Children using Panoramic Radiographs (a Retrospective Study)

Details

Type

Article

Created At

07 Jan 2025