Facial indices in lateral cephalogram for sex prediction in Chennai population – A semi-novel study


Mary Missier
Selwin Samuel
Ashwin George


Background: Osteological examination is a very reliable tool to determine the sex of the individual as the consolidation of the dimorphic characteristics concludes the sex of the individual. This study was performed with lateral cephalograms, which is a vital diagnostic tool for patients undergoing orthodontic treatment. An index was formed, which could be considered as a reliable sex determinant in forensic applications. Materials and Methods: This pilot study was performed on samples of the Dravidian population. Two-fifty individuals, whose age ranged between 25 and 40 years, were taken (125 subjects were males and 125 subjects were females). A total of ninety-nine cephalometric variables were compared, subjected to statistical analysis and tested for significance using the t-test. Results: Out of a total of 99 variables tested only twenty-four variables showed statistical significance. So, these twenty-four variables were then subjected to discriminant function analysis to evaluate the effectiveness of each variable in predicting the sex of an individual Individually, Ramus length (Ramus ln), Condylion to Gnathion (Co-Gn) and ramus height showed the highest sex determining dependability of 78%. On the flipside, lower anterior facial height (LAFH), with 52%, showed the lowest consistency. Conclusion: From this study, it is clearly evident that cephalometric landmarks are reliable sex determinants to a good extent. All the statistically significant measurements, but one, showed acceptable percentages of reliability. This means the chosen variables can be used for the Dravidian population to robustly determine the sex of the individuals of interest.


How to Cite
Mary Missier, Selwin Samuel, & Ashwin George. (2018). Facial indices in lateral cephalogram for sex prediction in Chennai population – A semi-novel study. Journal of Forensic Dental Sciences, 10(3), 151–157. https://doi.org/10.4103/jfo.jfds_81_18


  1. Mattson MP. Superior pattern processing is the essence of the evolved human brain. Front Neurosci 2014;8:265.
  2. Narayan Reddy KS. The Essentials of Forensic Medicine and Toxicology. 33rd ed. New Delhi: Jaypee Publishers; 2014.
  3. Krishan K, Kanchan T, Garg AK. Dental evidence in forensic identification ‑ an overview, methodology and present status. Open Dent J 2015;9:250‑6.
  4. Dubrul EL. Sicher and Dubrul’s Oral Anatomy. 8th ed. St. Louis: Ishiyaku Euro America; 1988.
  5. Samuel SG, Pandey A, Dahiya MS. A report on the current status of radiology in forensic odontology in the Indian scenario. Int J Forensic Odontol 2017;2:34‑7.
  6. Khaitan T, Kabiraj A, Ginjupally U, Jain R. Cephalometric analysis for gender determination using maxillary sinus index: A novel dimension in personal identification. Int J Dent 2017;2017:7026796.
  7. Sidhu R, Chandra S, Devi P, Taneja N, Sah K, Kaur N. Forensic importance of maxillary sinus in gender determination: A morphometric analysis from Western Uttar Pradesh, India. Eur J Gen Dent 2014;3:53‑6.
  8. Naikmasur VG, Shrivastava R, Mutalik S. Determination of sex in South Indians and immigrant Tibetans from cephalometric analysis and discriminant functions. Forensic Sci Int 2010;197:122.e1‑6.
  9. Badam RK, Manjunath M, Rani MS. Determination of sex by discriminate function analysis of lateral radiographic cephalometry. J Indian Acad Oral Med Radiol 2011;23:179‑83.
  10. Devang Divakar D, John J, Al Kheraif AA, Mavinapalla S, Ramakrishnaiah R, Vellappally S, et al. Sex determination using discriminant function analysis in indigenous (Kurubas) children and adolescents of Coorg, Karnataka, India: A lateral cephalometric study. Saudi J Biol Sci 2016;23:782‑8.
  11. Patil KR, Mody RN. Determination of sex by discriminant function analysis and stature by regression analysis: A lateral cephalometric study. Forensic Sci Int 2005;147:175‑80.
  12. Indira AP, Markande A, David MP. Mandibular ramus: An indicator for sex determination – A digital radiographic study. J Forensic Dent Sci 2012;4:58‑62.
  13. Saini V, Srivastava R, Rai RK, Shamal SN, Singh TB, Tripathi SK, et al. Mandibular ramus: An indicator for sex in fragmentary mandible. J Forensic Sci 2011;56 Suppl 1:S13‑6.
  14. Mehta M, Saini V, Nath S, Menon SK. CT scan images for sex discrimination – A preliminary study on Gujarati population. J Forensic Radiol Imaging 2015;3:43‑8.
  15. Hsiao TH, Chang HP, Liu KM. Sex determination by discriminant function analysis of lateral radiographic cephalometry. J Forensic Sci 1996;41:792‑5.
  16. Hsiao TH, Tsai SM, Chou ST, Pan JY, Tseng YC, Chang HP, et al. Sex determination using discriminant function analysis in children and adolescents: A lateral cephalometric study. Int J Legal Med 2010;124:155‑60.