Digital radiographic evaluation of mandibular third molar for age estimation in young adults and adolescents of South Indian population using modified Demirjian′s method

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Published Dec 1, 2014
https://doi.org/10.4103/0975-1475.137068
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Volume 6, Issue 3, September-December 2014

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Rezwana Mohammed
Department of Oral Medicine and Radiology, GITAM Dental College and Hospital, Rushikonda, Visakhapatnam
Ravichandra Koganti
Department of Oral and Maxillofacial Surgery Kalinga Institute of Dental Sciences, Bhubaneswar, Odisha
Siva Kalyan
Department of Public Health Dentistry, Mamata Dental College and Hospital, Khammam, Andhra Pradesh
Saritha Tircouveluri
Department of Orthodontics and Dentofacial Orthopaedics, Mamata Dental College and Hospital, Khammam, Andhra Pradesh
Johar Singh
Department of Orthodontics and Dentofacial Orthopaedics,Chhattisgarh Dental College and Research Institute, Rajnandgaon, Chhattisgarh
Enganti Srinivasulu
Government Dental College and Hospital, Hyderabad, Andhra Pradesh

Abstract

In recent years, it has become increasingly important to determine the age of living people for a variety of reasons, including identifying criminal and legal responsibility and for many other social events such as birth certificate, marriage, beginning a job, joining the army and retirement. Objectives: The aim of this study was to assess the developmental stages of mandibular third molar for estimation of dental age (DA) in different age groups and to evaluate the possible correlation between DA and chronological age (CA) in South Indian population. Materials and Methods: Digital orthopantomography of 330 subjects (165 males, 165 females) who fit the study and the criteria were obtained. Assessment of mandibular third molar development was performed using Demirjian et al., modified method and DA was assessed using tooth specific stages. Results and Discussion: The present study showed a significant correlation between DA and CA in both males and females. Third molar development commenced around 9 years and root completion takes place around 18.9 years in males and in females 9 years and 18.6 years respectively. Demirjian modified method underestimated the mean age of males by 0.8 years and females by 0.5 years and also showed that females mature earlier than males in selected population. Conclusion: Digital radiographic assessment of mandibular third molar development can be used to generate mean DA using Demirjian modified method and also the estimated age range for an individual of unknown CA. Since the Demirjian method is based on French-Canadian population, to enhance the accuracy of forensic age estimates based on third molar development, the use of population-specific standards is recommended.

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How to Cite
Rezwana Mohammed, Ravichandra Koganti, Siva Kalyan, Saritha Tircouveluri, Johar Singh, & Enganti Srinivasulu. (2014). Digital radiographic evaluation of mandibular third molar for age estimation in young adults and adolescents of South Indian population using modified Demirjian′s method. Journal of Forensic Dental Sciences, 6(3), 191–196. https://doi.org/10.4103/0975-1475.137068
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