Masar Abdul Kahalik Qaraghouli*, Hassan Mohamed Abouelkeir and Rania Abdueaziz Fahmy
Introduction: Sexual dimorphism is an important part of studies in the fields of anthropology and forensic sciences. The mandible is the most dimorphic bone in the skull and is crucial in determining sex. The study correlated and assessed the accuracy of mandibular ramus anthropometric parameters for sex prediction.
Materials and Methods: This study included 120 CBCT images (60 males and 60 females, over the age of 18). The scans were taken by I-CAT and exported to on demand 3DTM. Five mandibular ramus linear parameters were assessed bilaterally (minimum ramus breadth, maximum ramus breadth, coronoid height, condylar height and ramus projective height). On 3D volume rendering image parameters were measured using the mouse-driven method. Data were analyzed using IBM SPSS (Version 23. The P<0.05 was considered significant).
Results: Prediction accuracy rates of 85.0% for females (51 female scans out of 60) and 50 male scans out of 60 males (accuracy rates of 83.3%). maximum ramus breadth area under the curve (AUC=0.77) was less than 43.94 indicating females, with a specificity of 64.29%. Projective ramus height had an excellent ability to predict females (AUC=0.83). less than 60.85 indicated female, with a specificity of 71.43%. The maximum ramus breadth, coronoid Height has an acceptable ability to predict females with a specificity of 64.29%. and 92.86%. respectively. The coronoid height less than 12.15 indicated female sex, with a specificity of 92.86%.
Conclusion: The mandibular ramus demonstrated significant sexual dimorphism using CBCT with high specificity. Maximum ramus breadth, coronoid height and projective ramus height were the most significant sex predictors.
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