Determination of Sexual Dimorphism using Panoramic Radiograph –A Cross Sectional Study from Kerala, India
DOI:
https://doi.org/10.48165/jiafm.2024.46.2.19Keywords:
Forensic odontology, Morphometric mandibular measurements, Discriminant function analysisAbstract
Morphological features of mandible have a vital role in forensic anthropology. The objective of the study was to determine whether morphometric mandibular ramus measurements like minimum ramus width, maximum ramus width and condylar height from digital radiography can be used for the assessment of sexual dimorphism. Cross-sectional study from the 300 clear panoramic radiographs without any artefacts with the permanent dentition of adults between the age group 21 to 60 were included. Mandibular measurements were carried out using the standard inbuilt imaging Ez dent imaging software using anatomical points in the radiograph. Discriminant function analysis (DFA) was used to build a predictive model group based on gender. Receiver Operating Characteristics (ROC) curve was used to classify the gender with all three mandibular measurements. Males have higher values for all three measurements compared to female sex. Maximum ramus height coefficient (0.962) with large absolute values corresponds to variables with greater discriminating ability; while minimum ramus width (0.232) and maximum ramus width coefficient (-0.110) had lesser discriminatory function. ROC curve failed to discriminate gender for all three mandibular variables. Mandibular maximum ramus height was the most important predictor to assess sexual dimorphism in the present study. Morphometric measurements were accurate and in present study, DFA correctly classified 73.7% cases from Kerala population.
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