Validation of Cameriere’s third molar maturity index alone and in combination with apical maturity of permanent mandibular second molar for indicating legal age of 14 years in a sample of South Indian children

Balla, Sudheer B.; Banda, Thirupathi Reddy; Galić, Ivan; N, Naga Madhuri; Naishadham, P Parameswar

doi:10.1016/j.forsciint.2019.02.009

Cited by 18 publications

(3 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This was a significant evaluation since we concluded that the information of both teeth did not allow to improve the estimates since the information of the index of one of the teeth was considered irrele vant, when the index of the other was already in a model. Regarding gender, the obtained results revealed that there were no statistically significant differences, which was sustained with most of the published studies [5,10,12]. However, there are some studies with opposite evidence.…”

Section: Discussionsupporting

confidence: 66%

Forensic age estimation using new models of mathematical regression formula constructed with molar indexes: dental age assessment

Pereira¹,

Rodrigues²,

Augusto³

et al. 2021

jos

View full text Add to dashboard Cite

Introduction: In forensic science, age estimation for identification purposes of living and deceased individuals, is of great importance. It is crucial for humanitarian reasons in both civil and criminal cases. Objectives: The aim of this study was to contribute to the process of forensic age estimation using dental age assessment with mineralization stages of Demirjian method, and maturity indexes of permanent mandibular second (I 2M ) and third molars (I 3M ). Material and methods: Two samples were used from a Portuguese population; for I 2M , 591 orthopantomo graphy's aged between 7 and 15 years and for I 3M , 350 orthopantomography's aged between 12 and 23 years. Age estimation was obtained using linear regression models, each model was estimated with all observations and without observations, in which I 2M or I 3M = 0. Results: The results of ICC for intra and interobserver validation varied between 0.608 and 0.999 for both indexes. Pearson correlation coefficient between each index and chronological age showed that all indexes were significantly negatively correlated with chronological age. The standard error of estimate and the mean absolute error were continually low without patients with null index. Conclusions: Application of I2M is reproducible in a Portuguese population for medicallegal application in a population aged 7 to 15 years, when the corresponding index is positive. Third molar must be used only if its index is positive. The inclusion of Demirjian staging in both models significantly increases accuracy.

show abstract

Section: Discussionsupporting

confidence: 66%

Forensic age estimation using new models of mathematical regression formula constructed with molar indexes: dental age assessment

Pereira¹,

Rodrigues²,

Augusto³

et al. 2021

jos

View full text Add to dashboard Cite

show abstract

“…Balla et al indicated that the apical maturity of the lower second molars alone is not enough to indicate the 14-year-old threshold, suggesting the combination of the second and third molars for better accuracy. 27 On the other hand, tooth eruption seems to be affected by a number of factors such as physical and sexual development, and craniofacial morphology. Marques et al suggested that forensic age estimation is possible using the eruption stages of the lower second molars, albeit with some important limitations, that is, ethically unacceptable errors.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of secondary dentin deposition in lower first molars to indicate a legal age threshold of 14 years using receiver operating characteristic curves

Ravi

Balla

et al. 2020

Med Sci Law

Self Cite

View full text Add to dashboard Cite

The age threshold of 14 years has become vital in proving legal violations involving children, particularly in cases of suspected child labour, child pornography and the minimum age of criminal responsibility. In recent years, there has been great interest in the evaluation of age in children and sub-adults using analysis of regressive changes in teeth, with a particular focus on age thresholds that are of medico-legal importance. This research aimed to compare the sensitivity and specificity of stages of root pulp visibility by Olze et al. in a sample of South Indian children aged between 12 and 16 years, with an age threshold of 14 years, using receiver operating characteristic curves and the area under the curve (AUC). Among the four stages of root pulp visibility, stage 2 showed the highest AUC in both female and male cohorts. For stage 2, lower sensitivity and higher specificity values were recorded, indicating the possibility of type II errors (i.e. false negatives). In both sexes, stage 2 had a higher AUC (i.e. 0.696 in females and 0.706 in males, respectively). Based on our findings, it can be concluded that this staging method in lower first molars is of limited value in indicating the legal age threshold of 14 years. Future research should validate the proposed approach in a larger sample and consider how to improve predictions in this area.

show abstract

“…This method utilizes an orthopantomogram (OPG) and measures the lower left third molar (Federation Dentaire Internationale (FDI) numbering 38) open apices, then dividing it by its tooth length, effectively eliminating the differences in magnification and angulation in the OPG (Cameriere et al, 2006). The I3M method was already tested in the Indonesian population, and it was found that the development of Indonesian juveniles was slower than in other countries (Angelakopoulos et al, 2018;Balla, Banda, et al, 2019). Hence, a specific dental age estimation equation for Indonesian juveniles' I3M needs to be generated.…”

Section: Introductionmentioning

confidence: 99%

Third Molar Maturity Index in Indonesian Juveniles: Comparing Linear and Polynomial Kernel Performance in Support Vector Regression for Dental Age Estimation

Boedi

Saputri

2021

Medstat

View full text Add to dashboard Cite

Dental age estimation is a branch of forensic odontology that plays a pivotal role in identifying, examining, or determining the legal status of the living and the dead. This research explores the capability of support vector regression to estimate chronological age from the third molar maturity index (I3M) in Indonesian Juveniles and compares the linear and kernel performance. Two hundred and twenty-two orthopantomo-graphy were measured using I3M in the lower left third molar and processed using R Studio with Caret extension. The analysis was separated into two groups, group 1 using only I3M as a predictor, and group 2 using both I3M and sex. Both groups were analyzed using SVR with the linear and polynomial kernel. The result suggests that using polynomial kernel SVR in group 1 produces the best results, with an R2 value of 0.64, RMSE of 1.588 years, and MAE of 1.25 years using degree = 3, c = 0.25. However, the addition of a sex predictor in the model reduces its accuracy when using the polynomial kernel.

show abstract

Validation of Cameriere’s third molar maturity index alone and in combination with apical maturity of permanent mandibular second molar for indicating legal age of 14 years in a sample of South Indian children

Cited by 18 publications

References 29 publications

Forensic age estimation using new models of mathematical regression formula constructed with molar indexes: dental age assessment

Forensic age estimation using new models of mathematical regression formula constructed with molar indexes: dental age assessment

Evaluation of secondary dentin deposition in lower first molars to indicate a legal age threshold of 14 years using receiver operating characteristic curves

Third Molar Maturity Index in Indonesian Juveniles: Comparing Linear and Polynomial Kernel Performance in Support Vector Regression for Dental Age Estimation

Contact Info

Product

Resources

About