A Deep Learning Framework for Gender Estimation from Dental Radiographs Using ResNet-50

Author: Jinal N. Raval, Mehul S. Patel, Rupal R. Chaudhari, Jayesh M. Mevada, Govind G. Patel
Published Online: July 1, 2026
DOI: http://doi.org/10.63766/spujstmr.26.000092
Abstract
References

Accurate gender estimation from skeletal remains is a critical component of forensic anthropology, bio archaeology, and medico-legal identification. Conventional morphometric approaches largely depend on visual assessment and manual measurements of sexually dimorphic cranial traits, which are often constrained by observer subjectivity, population variability, and incomplete or damaged skeletal remains. To overcome these limitations, this study presents a deep learning–based framework for automated gender classification from skull images, employing residual learning–based architectures. A curated dataset of dental radiographs was preprocessed through normalization and data augmentation to improve feature consistency and model generalizability. The proposed ResNet-50–based model was trained to learn discriminative dental features associated with sexual dimorphism. Model performance was evaluated using standard classification metrics, including accuracy, precision, recall, F1-score, and confusion matrix analysis. Experimental results demonstrate that the proposed deep learning framework achieves reliable gender classification performance, outperforming traditional odontometric methods and classical machine learning classifiers. These findings indicate that deep learning models provide a robust, objective, and scalable solution for teeth-based gender estimation, with significant potential for application in forensic investigations and digital human identification systems.

Keywords: Forensic anthropology, Gender estimation, Dental imaging, Convolutional neural network, ResNet-50, Deep learning
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