Articlegreen2014

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

Rezwana Begum Mohammed · Ravichandra Koganti · Saritha Tircouveluri · Johar Rajvinder Singh · Enganti Srinivasulu

29 citations0/0 files storedPubMed Central

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Forensic Anthropology and Bioarchaeology Studies Orthodontics and Dentofacial Orthopedics Dental Radiography and Imaging

Abstract

UNLABELLED: 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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References

2008Criteria for age estimation in living individuals 1976New systems for dental maturity based on seven and four teeth 2000Effects of ethnicity on skeletal maturation: consequences for forensic age estimations 1998Dental age assessment: The applicability of Demirjian's method in South Indian children 2001A review of the most commonly used dental age estimation techniques.2004Forensic age estimation in living subjects: the ethnic factor in wisdom tooth mineralization 2004Validation of common classification systems for assessing the mineralization of third molars 2002Assessment of dental maturity of Brazilian children aged 6 to 14 years using Demirjian's method

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2021Age estimation using third molar maturation based on Demirjian’s criteria 2022Estimating the 18-Year Threshold with Third Molars Radiographs in the Southern Italy Population: Accuracy and Reproducibility of Demirjian Method 2022Forensic Dental Age Estimation: Development of New Algorithm Based on the Minimal Necessary Databases 2015Secular trend of earlier onset and decelerated development of third molars: Evidence from Croatia

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