Biometrics study of external ear in relation to age and gender in males and females of Sriganaganagar district, Rajasthan Kaur Mandeep1, Kaur Navjot2,*, Sharma Parveen3 1Associate Professor, Department of Anatomy, Maharaja Ganga Singh Dental College, Sriganaganagar 2Associate Professor, Department of Anatomy, Adesh Institute of Medical Sciences and Research, Bathinda 3Professor, Department of Anatomy, Maharaja Ganga Singh Dental College, Sriganaganagar *Corresponding Author: Dr. Navjot Kaur, Associate Professor, Department of Anatomy, Adesh Institute of Medical Sciences and Research, Bathinda, Phone : +91-9915547048, E-mail: navjotmsc@gmail.com
Online published on 19 December, 2023. Abstract Introduction The shape of auricle generally remains constant throughout human life and the auricle is not very much prone to injury. Thus, the biological features of auricle similarly to biological features of fingertip skin ridges pattern, attributing such notions as individuality, stability and indestructibility. Material and Methods The present longitudinal randomized study was carried on 500 subjects (250 males and 250 females), aged 01 to 70 years, residing in Sriganganagar Rajasthan. Two photos of right and left ear were taken with camera perpendicular to the subjects in enough lighting condition to avoid any diurnal changes. Biometric A (Iannarelli measurements) was obtained by putting eight lines that inclined in similar angle of 45 degree on top of the ear photos. All measurements named as Biometric A1, Biometric A2 and further until Biometric A12. Results There was a significant difference in mean A1, A3, A4, A5, A7, A8, A9, A11 and A12 between right and left sides. Ear biometrics A3, A5, A6, A7, A8, A9 and A10 were significantly more among males compared to females. and the descending order of accuracies of gender estimation were A6 (78.3%), A9 (77.1%), A5 (72.4%), A7 (72.3%), A10 (70.4%), A8 (70.0%), A3 (68.1%) and A12 (67.1%) and the best combination of gender estimation was six biometrics A8, A6, A11, A9, A3 and A7 with very high accuracy 93.4%. All the ear biometrics increased significantly with age except A11. Conclusion Only six out of twelve ear biometrics provided a good reliability in estimation of gender in forensic investigation. Ear biometrics A6 showed a better estimation of gender using formula formed by C & R Tree. Combination of ear biometrics was required to increase the accuracy in estimation of gender. Top Keywords Ear Biometrics, Auricle, Ear Lobule. Top |