Accuracy of age estimation methods from orthopantomograph in forensic odontology: A comparative study

Khorate, Manisha; Dinkar, Ajit D; Ahmed, Junaid

doi:10.1016/j.forsciint.2013.09.020

Cited by 28 publications

(19 citation statements)

References 12 publications

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“…Another advantage of the London atlas is that the teeth are spaced such that each tooth is clearly visible (AlQahtani, Hector, & Liversidge, ). A limitation is the combining of data on children from different populations despite the well‐established pattern of population variation in tooth formation (Flood, Franklin, Turlach, & McGeachie, ; Khorate, Dinkar, & Ahmed, ; Koshy & Tandon, ; Willems, Van Olmen, Spiessens, & Carels, ; Zhai, Park, Han, Wang, Ji, & Tao, ). For example, Black children from Africa are well advanced in dental emergence and formation compared to European and Asian populations (Cavrić, Vodanović, Marušić, & Galić, ; Oziegbe, Esan, Oyedele, 2014).…”

Section: Introductionmentioning

confidence: 99%

The WITS Atlas: A Black Southern African dental atlas for permanent tooth formation and emergence

Esan

Schepartz

2018

American J Phys Anthropol

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Section: Introductionmentioning

confidence: 99%

The WITS Atlas: A Black Southern African dental atlas for permanent tooth formation and emergence

Esan

Schepartz

2018

American J Phys Anthropol

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“…Dental and bone age have been assessed to determine to what extent they are correlated for diagnostic purposes. Considering that states of dental mineralization are much less affected by environmental [ 2 , 11 , 46 ] and hormonal [ 2 , 23 , 28 ] variations than states of bone mineralization, dental development provides more reliable indications of chronological age than bone development [ 2 , 13 , 30 ]. Various methods have been proposed to calculate chronological age through dental maturity and mineralization, among which we highlight those proposed by Nolla in 1960 [ 43 ] and by Demirjian et al in 1973 [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Djukic et al [ 13 ] assessed the accuracy of the Demirjian and Willems methods with 686 Serbian children between 4 and 15 years old, finding that both methods showed a discrepancy in relation to chronological age, although the Demirjian method was less accurate than that of Willems. Khorate et al [ 30 ] found an underestimation of around 2 years of chronological age in a sample of 500 orthopantomographs of individuals between 4 and 22 years old in the State of Goa (India).…”

Section: Introductionmentioning

confidence: 99%

The accuracy of estimating chronological age from Demirjian and Nolla methods in a Portuguese and Spanish sample

et al. 2014

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BackgroundAge determination has great importance in many clinical decisions, being commonly used in odontopediatrics, orthodontics, pediatrics, and forensic medicine. The Nolla and Demirjian et al. methods have been used for these purposes. However, estimating chronological age by means of the dental mineralization stage is not a straightforward analysis, and it is fundamental to test the validity of these methods and their applicability to populations. In this article we intend to compare the accuracy of estimating chronological age from dental age measured with the Nolla and Demirjian methods in a Portuguese and Spanish sample, considering the variables of sex and age-group.MethodsThe sample was composed of 821 orthopantomographs of healthy Portuguese (n = 270) and Spanish (n = 551) subjects from 4 to 34 years old. For the Nolla and Demirjian methods, seven mandibular left teeth were examined, staged according to the dental maturity scale of each method. We obtained a good index of inter-rater agreement, a good internal consistency for the teeth assessment, and a good temporal consistency.ResultsDental age was calculated for each method. The Demirjian et al. method tends to overestimate the real age of participants and the Nolla method tends to underestimate it. The accuracy of both methods varied between the sexes and age groups. Both methods were found to be more precise with males. As the age-group increases, the predictive capacities of both methods diminish. The Nolla method was more accurate than the Demirjian method in early and late childhood for both sexes. Neither method could predict chronological age in adults.ConclusionsWe can estimate chronological age for early and late childhood, through the Nolla and Demirjian methods, with the former showing greater predictive capacities than the latter. The Demirjian method tends to overestimate age and the Nolla method tends to underestimate it, leading to the importance of forming regression equations adapted to the population studied. Nolla and Demirjian formulas adapted to our sample were created as a function of sex and age-group.

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“…The field of forensic odontology involves personal identification of unknown corpses using oral characteristics, including dental treatment marks. It also involves a wide range of tasks such as sex and age estimation using skeletal remains and DNA typing, as well as estimation of time since death [18][19][20][21][22][23][24][25] . Most subjects are appraised using cranial bones, including the calvarium.…”

Section: Discussionmentioning

confidence: 99%

Comparison of the Morphological Structures of the Human Calvarium and Turtle Shell

Ishikawa

Hirayama

Miake

et al. 2019

J. Hard Tissue Biology.

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In the field of forensic odontology, not only personal identification using oral conditions, including dental treatment marks and DNA typing, but also species identification, age or sex estimation using cranial or partial bones, and time after death may also be applicable as estimation methods. Among these many tasks, one of the most difficult is species identification of fragmented calvarium. This is because the calvarium has poor morphological features, except that it is a flat bone, and few reports have described how to differentiate it. In this study, a simple identification method for turtle shell (carapace and plastron) whose morphological characteristics closely resembled those of the calvarium was applied. As a result, in an enlarged image obtained using a stereoscopic microscope, the characteristics of each suture pattern could be confirmed. In the decalcified and non-decalcified bone specimens, the difference in the inner/outer laminar structure and the specific structural difference of the cancellous bone-equivalent part were confirmed. Furthermore, most of the features could be obtained in the destructive inspection when it was examined using micro CT imaging to determine whether discrimination by nondestructive inspection was possible or not. No significant difference in ingredients was found using the Electron Probe X-ray Micro Analyzer. The calvarium was more calcified than the carapace but less calcified than the plastron. From these results, we suggest that micro CT imaging is effective for discriminating between the calvarium and turtle shell in a short time.

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Accuracy of age estimation methods from orthopantomograph in forensic odontology: A comparative study

Cited by 28 publications

References 12 publications

The WITS Atlas: A Black Southern African dental atlas for permanent tooth formation and emergence

The WITS Atlas: A Black Southern African dental atlas for permanent tooth formation and emergence

The accuracy of estimating chronological age from Demirjian and Nolla methods in a Portuguese and Spanish sample

Comparison of the Morphological Structures of the Human Calvarium and Turtle Shell

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