Digitized Morphometric Analysis using Maxillary Canine and Mandibular First Molar for Age Estimation in South Indian Population

Abstract

Background:In recent years, the estimation of age in living individuals have become important to solve judicial or civil problems. Secondary dentin deposition occurs as the age advances and can be measured by calculating the reduction in pulp chamber through Noninvasive radiograph techniques.Aim:The aim is to derive precise population specific formulae for age estimation.Materials and Methods:Digitalized Orthopantomography of 150 subjects, was retrieved. The subjects were divided into study and test group. Pulp tooth area ratio was recorded from the maxillary canine and pulp chamber crown root trunk height ratio was recorded from a mandibular first molar.Statistical Analysis:Regression equation was derived from study group subjects and this equation was used to estimate the age of subjects in the test group.Results:No significant differences were seen between mean chronological age and mean estimated age (p-value- 0.157). Mean Absolute Error (MAE) was estimated to be 2.76 years. The percentage of estimated ages in test sample < ± MAE was 72%. The difference was higher in the group I and II (p-value- 0.001 and 0.002)Conclusion:The equation derived from the anterior and posterior teeth together gave more accurate results in the present study. The prediction accuracy can further be enhanced by using multiple teeth or by utilizing other linear measurements in the same teeth.

Usability of first molar teeth measurements for age and sex estimation in cone-beam computed tomography images

“…MAE values less than 10 years are considered acceptable in forensic adult dental AE. 35 MAE values for maxillary molars and mandibular molars in this study were comparable to the results of a study on first molars in the Chinese population. 1 MAE values for dental AE using PTVR on linear models of mandibular first molars (8.81) and maxillary canines (8.58) were also similar to the mandibular first molars (9.79) in the present study.…”

Age-group determination of living individuals using first molar images based on artificial intelligence

“…Among the various biological markers for age determination, teeth are a crucial indicator of aging 31 . Methods for age determination are mostly based on X-rays, and assess crown formation, mineralization of a tooth, root growth and apex maturation, and order of eruption of the teeth into the mouth 32 , 33 . While these various dental age estimation methods have been confirmed for children and adolescents, there are few reliable methods with low error rates and high reliability for adults and the elderly.…”

Age‐related radiomorphometric changes on panoramic radiographs

“…Macroscopic changes in the teeth are considered part of the normal aging process. Typical age‐related changes in the tooth macrostructure include wear, resection, and root resorption (Ilayaraja et al, 2018). In the present study, decreased root length and increased crown length of the canines were observed with age, which are considered to be key teeth for personal identification (Yuwanati, Karia, & Yuwanati, 2012).…”

“…Maxillary canines often have the longest root (Sapkota & Gupta, 2014) and suffer less wear than the other anterior teeth; thus, they are normally the oldest teeth in adults (Cameriere et al, 2007a). Of the posterior teeth, the first molars are selected for assessment, because they show fewer overlaps and superimposition issues on PRs than the premolars (Ilayaraja et al, 2018). The first molars are usually the first permanent teeth to erupt in the oral cavity; hence, they are most likely to exist in the oral cavity for the longest time and play a vital role in mastication.…”