Accuracy of the third molar index for assessing the legal majority of 18 years in Turkish population

Gülşahı, Ayşe; Luca, Stefano De; Çehreli, Sevi Burçak; Tiralı, Resmiye Ebru; Cameriere, Roberto

doi:10.1016/j.forsciint.2016.04.034

Cited by 41 publications

(40 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When analysing our data regarding males and females (Fig. 4 ), we demonstrated alike maturation of third molars in both males and females, which is in line with similar studies 14 – 16 , 19 – 23 , 44 , 51 . Previous European studies present slightly better accuracy and sensibility in males than in females 14 – 16 , 19 – 23 , 44 , 51 .…”

Section: Discussionsupporting

confidence: 89%

Validation of the Third Molar Maturation Index (I3M) to assess the legal adult age in the Portuguese population

Neves¹,

Antunes‐Ferreira

Machado³

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

Age estimation is a major step in forensic and legal procedures. Its relevance has been increasing due to growing society issues, such as identification of missing people, crimes against minors or lack of valid identification papers from locals or foreigners. Evaluation of the cut-off value of the Third Molar Maturation Index (I3M) = 0.08 for discriminating minors from adults in the Portuguese population. The left lower third molars were analysed by applying a specific cut-off value of 0.08 determined by Cameriere et al. in 2008. A sample of 778 digital panoramic radiographs of a representative Portuguese sample (442 females and 336 males), in the age range of 12–24 years (mean age 17.7 ± 2.98 years in females and 18.1 ± 3.0 years in males), was retrospectively evaluated. I3M decreased as the real age gradually increased in both sexes. The 0.08 cut-off score was valuable in discriminating adults from minors. According to the pooled results, the accuracy, by means of area under the curve, was 92.8% (95% confidence interval (CI) 91.0–94.6%). The proportion of correctly classified subjects (sensitivity) was 90.7% (95% CI 88.7–92.8%) and the specificity was 94.9% (95% CI 93.3–96.4%). The results show that I3M is a valuable method to differentiate minors from adults in the Portuguese population.

show abstract

Section: Discussionsupporting

confidence: 89%

Validation of the Third Molar Maturation Index (I3M) to assess the legal adult age in the Portuguese population

Neves¹,

Antunes‐Ferreira

Machado³

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the present Egyptian sample, the proportion of correctly classified persons was 97% in boys and 82% in girls, even better than 83% reported by Cameriere et al (2008). More or less similar proportions of correctly classified individuals were reported in Turkish (97.6% for boys and 92.7% in girls) (Gulsahi et al 2016), Serbians (95% in males and 91% in females) (Zelic et al 2016), and Chileans (83%) (Cameriere et al 2018).…”

Section: Discussionsupporting

confidence: 53%

“…Meanwhile, a high specificity (Sp) of the cutoff value (100% in boys and 97% in girls) was found in the present sample. On the other hand, specificity was 100% in the Turkish study (Gulsahi et al 2016) and in Saudi males (AlQahtani et al 2017), and over 85% in Colombians (Zelic et al 2016), Botswana (Cavrić et al 2016), and Australian population (Franklin et al 2016).…”

Section: Discussionmentioning

confidence: 98%

“…When the cutoff value of "I 3M = 0.08" was evaluated in the present study (247 cases), the high sensitivity (Se) of the test in boys (95%) but relatively lower sensitivity in girls (73%) was documented. Sensitivity values were reported to be over 95% in Turkish males (128 boys from 293 total sample) (Gulsahi et al 2016), Colombians (288 children), (De Luca et al 2016), and Serbians (598 cases) (Zelic et al 2016). Meanwhile, it was 88% in Botswana (1294 individuals) (Cavrić et al 2016) and 90% in Australians (143 cases) (Franklin et al 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Meanwhile, the positive predictive value (PPV) in the present Egyptian sample was 60% in boys and 59% in girls. Although the PPV is highly useful, it is sensitive to the prevalence of the positive test group (older age category) and can rarely be generalized beyond the study sample (Gulsahi et al 2016). In a legal and forensic context, it is ethically safer to underestimate age than to overestimate age due to constitutional and judicial implications when involving a possible adult (Cavrić et al 2016).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Accuracy of the cutoff value of the third molar maturity index: an Egyptian study

El-Bakary

El-Azab

Atta

et al. 2019

Egypt J Forensic Sci

Self Cite

View full text Add to dashboard Cite

Background This study aimed to test the sensitivity and specificity of the third molar maturity index (I3M) cutoff value to discriminate between individuals above and below 18 years of age in an Egyptian sample. Material and methods Digital images of 247 orthopantographs (97 boys and 150 girls) were evaluated. The cutoff value of I3M obtained from the results of Cameriere et al. (Int J Legal Med 122:493–497, 2008) was evaluated in both girls and boys. Results Sensitivity (the proportion of individuals being 18 years of age or older) was 95% and 73% in boys and girls, respectively. Meanwhile, specificity (the proportion of individuals younger than 18) was 100% in boys and 97% in girls. The proportion of correctly classified boys was 97% while it was 59% in girls. Conclusion It can be concluded that the third molar maturity index can discriminate between individuals who are 18 years and over and those under 18 with higher accuracy in boys.

show abstract

The third molar maturity index in indicating the legal adult age in Kosovar population

et al. 2017

View full text Add to dashboard Cite

The third molar tooth, known as the "wisdom tooth," is the only tooth that can be used to determine legal adult age. This study aimed to test the accuracy of Cameriere's third molar maturity index (I) in assessing the legal adult age of 18 years in the Kosovar population. Orthopantomographs (OPTs) of 1221 healthy living Kosovar individuals, aged between 12 and 23 years and with no congenital or developmental anomalies, were analyzed. Intra-class correlation coefficients were 0.858 (95% CI, 0.786 to 0.906) and 0.852 (95% CI, 0.779 to 0.903) for intra-rater and for inter-rater agreement, respectively. The sample was divided into training dataset (800 OPTs) and test dataset (421 OPTs). The training dataset was used to generate the logistic regression model, while the test dataset was used to study the performance of the model. I and gender as independent variables and adult age (≥ 18 years) or minor age (< 18 years) as the dependent variable were used for logistic regression analysis. The receiver operating curve (ROC) analysis was used to determine the specific cut-off value of I for predicting adult age. The results showed that only I statistically significantly contributed to discriminating adults and minors. ROC analysis showed that the cut-off value of I < 0.08 was the best in discriminating adults and minors. An analysis of the test dataset (421 OPTs) showed that as I decreased the age gradually increased. The performance of the cut-off value of I < 0.08, to discriminate between adults and minors, was analyzed by contingency tables for both sexes. In males, the accurate classification (Acc) was 0.968 (95% CI, 0.926 to 0.985), the sensitivity (Se) was 0.962 (95% CI, 0.925 to 0.978), and the specificity (Sp) was 0.976 (95% CI, 0.929 to 0.995). The Bayes post-test probability (Bayes PTP) was 0.975 (95% CI, 0.905 to 1.00). In females, Acc was 0.909 (95% CI, 0.870 to 0.917), Se and Sp were 0.826 (95% CI, 0.787 to 0.834) and 0.991 (95% CI, 0.953 to 1.00) respectively, while Bayes PTP was 0.989 (95% CI, 0.926 to 1.00). Our data support the usefulness of I < 0.08 to indicate legal adult age in a Kosovar population.

show abstract

Accuracy of the third molar index for assessing the legal majority of 18 years in Turkish population

Cited by 41 publications

References 19 publications

Validation of the Third Molar Maturation Index (I3M) to assess the legal adult age in the Portuguese population

Validation of the Third Molar Maturation Index (I3M) to assess the legal adult age in the Portuguese population

Accuracy of the cutoff value of the third molar maturity index: an Egyptian study

The third molar maturity index in indicating the legal adult age in Kosovar population

Contact Info

Product

Resources

About