Reliability and validity of five radiographic dental‐age estimation methods in a population of Malaysian children

Kumaresan, Ramesh; Cugati, Navaneetha; Chandrasekaran, Balamanikandasrinivasan; Karthikeyan, Padmanabhan

doi:10.1111/jicd.12116

Cited by 74 publications

(67 citation statements)

References 20 publications

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“…Considering heterogeneous nature of different population groups included in this systematic review, the 'random effects model' of meta-analysis was applied. As presented in Figure 2, statistically significant overestimation was reported for Malaysian and Indian subjects studied by Kumaresan et al 14 Overall, meta-analysis showed a substantial difference between the chronological age (CA) and the dental age (DA) (WMD = 0.35, 95%CI = 0.07, 0.63, P = 0.0005) of individuals of almost all studies considered in this meta-analysis and explained in Figure 2.…”

Section: Quantitative Analysismentioning

confidence: 53%

“…Nolla's technique 4 of dental age assessment calculates the mineralization status of permanent teeth through standard ten stages and, it is a universally accepted system for calculating dental ages of wider ranges. It utilizes developmental stages of teeth for age assessment, which was initially applied to a published studies [6][7][8][9][10][11][12][13][14][15][16][17] were included in this systematic review. A quantitative metaanalysis was also conducted based on 10 studies 6-7, 10-17 for expressing the mean estimates (overestimation or underestimation) and the standard deviation of their estimates.…”

Section: Discussionmentioning

confidence: 99%

“…Disagreement was resolved by discussion among the review authors during the selection of articles. Finally, 12 relevant studies were retained for the qualitative synthesis and 10 for quantitative analysis or meta-analysis [6][7][8][9][10][11][12][13][14][15][16][17] . The process of study, screening and literature search are depicted in Figure 1.…”

Section: Characteristics Of Included Studiesmentioning

confidence: 99%

“…Over the past few decades, numerous studies have been published using Nolla's method 4 for age assessment of sub-adult dentition [6][7][8][9][10][11][12][13][14][15][16][17] . So far, no meta-analysis of different studies has been published to estimate the reliability and accuracy of Nolla's method in evaluating age of sub adult individuals.…”

Section: Introductionmentioning

confidence: 99%

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Forensic Dental Age Estimation of Sub-Adult Individuals Using Nolla’s Radiographic Method: A Systematic Review and Meta-Analysis

Sehrawat¹,

Singh²,

Sharma³

2016

BJFS

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Nolla's radiographic method of dental age estimation for sub-adult individuals has been commonly used for forensic purposes. To identify the accuracy and credibility of this method, a review has been conducted for estimating the variations/discrepancies between actual chronological and estimated ages of sub-adults individuals calculated by applying Nolla's radiographic method in different population groups. The articles using Nolla's method of age estimation and those published between 2006 and 2016 were used after relevant searches in PubMed, EMBASE, SCOPUS, COCHRANE and Web of Science databases. Studies conducted with dental radiographs of healthy subjects between 3 and 18 years of age and those reporting mean differences between the estimated dental age (DA) and chronological age (CA) as a measure of variation were included in the review for meta-analysis. A total of 5813 subjects (2839 boys and 2974 girls) between the age of 3 and 18 years were examined in the study, which were chosen from a total of 87 peer-reviewed articles. Quantitative (10 studies) and qualitative (12 studies) analyses of the results revealed that dental age of most sub-adults was found under-estimated using this method based developmental stages of teeth. The underestimation varied from +0.26 to +1 years for males, and +0.051 to +1.15 for females; with an average mean of 0.35 years and 0.20 years for males and females, respectively. Thus, it can be concluded that Nolla's method of dental age estimation underestimates the age of an individual in almost all the studies reviewed here. It should be carefully applied for forensic cases requiring legal scrutiny by courts of law.

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Section: Quantitative Analysismentioning

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Section: Characteristics Of Included Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Forensic Dental Age Estimation of Sub-Adult Individuals Using Nolla’s Radiographic Method: A Systematic Review and Meta-Analysis

Sehrawat¹,

Singh²,

Sharma³

2016

BJFS

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“…A forma subjetiva pode ser definida como aquelas presentes nos estudos precursores de diversas técnicas que tiveram início na década de 60 e 70, como os O método de Haavikko já é um método bastante estudado 14,[18][19][20]36,37,46,51,54,60,65,69 18,20,54,64,69 . Logo em seguida, é possível abranger os estudos nos quais o sexo (masculino e feminino) foram analisados separadamente 14,[18][19][20]33,36,37,41,46,51,54,64,69 . Por último, é muito comum encontrar estudos 14,18,19,41,64 , que além de analisarem os sexos separadamente, criam subgrupos dentro de cada sexo de acordo com um intervalo de idade pré-determinado.…”

Section: Discussionunclassified

Validação de três métodos para estimativa de idade de crianças e adolescentes brasileiros

Benedicto¹

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Benedicto EN. Validation of three methods for age estimation of Brazilian children and adolescents [thesis]. São Paulo: Universidade de São Paulo, Faculdade de Odontologia; 2017. Versão Corrigida. Age estimation is an important resource in Forensic Dentistry. Among several ways to obtain the age estimation, researchers may do it by analyzing the mineralization stage of permanent teeth. This type of analysis allows that a simple panoramic radiograph to provide relevant data to identify a deceased individual, for example. This study proposes the validation, accuracy analysis and construction of formulas based on the methods Liliequist and Lundberg with the adaptation of Hägg and Matsson (LLH), Haavikko (HKK) and Mornstad et al. (MSW) for the estimation of age by the stage of mineralization of permanent teeth in Brazilian children and adolescents. To achieve the results, panoramic radiographs of Brazilians were selected in a sample containing 1009 radiographs (387 males and 622 females) aged 8-15.99 years. Of these radiographs, it was selected only those that fulfilled all the requirements of the inclusion and exclusion criteria. After applying the methods, the results were inserted and worked in the Excel Program, Statistical Package STATA 13.0. (StataCorp LP, College Station, Texas, USA) and MedCalc (Medcalc® Software, Mariakerke, Belgium) according to the needs of the study. The samples were divided without splitting sex, with splitting sex and with splitting sex and age. The comparison of methods was performed by the mean differences between dental age and chronological age (DA-CA). Accuracy was analyzed by Absolute Difference (AD). The Skewness e Kurtosis normality test was employed and the Student t test, or the Wilcoxon test, for paired samples was submitted depending on the results. The results of comparisons informed, without any distinction as to sex, the best accuracy was obtained by LLH (AD = 0.97 and DA-CA =-0.58), HKK (AD = 1.42 and DA-CA =-1.35) and MSW (AD = 2.48 and DA-CA = 0.78). With distinction to sex the values for male were: LLH (AD = 0.91 and DA-CA =-0.45), HKK (AD = 1.80 and DA-CA =-1.75) and MSW (AD = 2.74 and DA-CA = 1.17); and for female: LLH (AD = 1.01 and DA-CA =-0.67), HKK (AD = 1.17 and DA-CA =-1.09) and MSW (AD = 2.31 and DA-CA = 0.53). In the comparison with distinction between sex and age, there was a predominance of the LLH technique, followed by HKK and MSW, respectively. The best multiple regression equations (LLH) applied in the same sample presented mean AD = 0.72 and DA-CA =-0.01. At the end, it was possible to conclude that it is possible to validate the methods presented in the Brazilian population and the method that most approached the Brazilian population was the Liliequist and Lundberg method with the adaptation of Hägg and Matsson.

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The effect of reference sample composition and size on dental age interval estimates

Sgheiza

Liversidge

2023

American Journal of Biological Anthropology

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ObjectivesValidation studies in juvenile dental age estimation primarily focus on point estimates while interval performance for reference samples of different ancestry group compositions has received minimal attention. We tested the effect of reference sample size and composition by sex and ancestry group on age interval estimates.Materials and MethodsThe dataset consisted of Moorrees et al. dental scores from panoramic radiographs of 3334 London children of Bangladeshi and European ancestry and 2–23 years of age. Model stability was assessed using standard error of mean age‐at‐transition for univariate cumulative probit and sample size, group mixing (sex or ancestry), and staging system as factors. Age estimation performance was tested using molar reference samples of four sizes, stratified by year of age, sex, and ancestry. Age estimates were performed using Bayesian multivariate cumulative probit with 5‐fold cross‐validation.ResultsStandard error increased with decreasing sample size but showed no effect from mixing by sex or ancestry. Estimating ages using a reference and target sample of different sex reduced success rate significantly. The same test by ancestry groups had a lesser effect. Small sample size (n < 20/year of age) negatively affected most performance metrics.DiscussionWe found that reference sample size, followed by sex, primarily drove age estimation performance. Combining reference samples by ancestry produced equivalent or better estimates of age by all metrics than using a single‐demographic reference of smaller size. We further proposed that population specificity is an alternative hypothesis of intergroup difference that has been erroneously treated as a null.

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Reliability and validity of five radiographic dental‐age estimation methods in a population of Malaysian children

Abstract: The Cameriere method of dental-age estimation is highly valid and reliable for Malaysian population, followed by the Willems and Nolla methods.

Cited by 74 publications

References 20 publications

Forensic Dental Age Estimation of Sub-Adult Individuals Using Nolla’s Radiographic Method: A Systematic Review and Meta-Analysis

Forensic Dental Age Estimation of Sub-Adult Individuals Using Nolla’s Radiographic Method: A Systematic Review and Meta-Analysis

Validação de três métodos para estimativa de idade de crianças e adolescentes brasileiros

The effect of reference sample composition and size on dental age interval estimates

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