Mandibular canine index: A study for gender determination in Gandhinagar population
Introduction: One of the important pieces of information gathered from tooth analysis is the sex of an individual. In most human living populations, mandibular canines show the greatest dimorphism and greatest dimensional differences between males and females. In view of these facts, the aim of this study was to establish the standard mandibular canine index (MCI) and estimate the sexual dimorphism in the population of Gandhinagar district of Gujarat state. Materials and Methods: The study consisted of 400 subjects, 200 males and 200 females in the age group of 20–40 years. The mesiodistal (MD) width of the right and left canine and the intercanine distance were measured. These values were used to derive the MCI and establish the amount of sexual dimorphism exhibited by the mandibular canine. Results: The MD crown width of the permanent mandibular right and left canines as well as mandibular intercanine distance of the males was found to be larger in size than in the females. The right mandibular canine exhibited 8.42% of sexual dimorphism while the left mandibular canine exhibited 8.40% of sexual dimorphism. The intercanine distance showed 2.75% of sexual dimorphism. The value of standard MCI derived using the formula devised by Rao et al. was 0.254 mm for the population residing in the Gandhinagar district. Conclusion: The present study supports the usefulness of the MCI in gender determination. The method of using mandibular canine indices is advantageous as it is easy, rapid, and cost-effective, requires no elaborate apparatus, and is suited for situations where large a number of samples have to be analyzed.
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How to Cite
Roseline Patel, Anjani Chaudhary, Bhavin Dudhia, Zonty Macwan, Purv Patel, & Yesha Jani. (2017). Mandibular canine index: A study for gender determination in Gandhinagar population. Journal of Forensic Dental Sciences, 9(3), 135–143. https://doi.org/10.4103/jfo.jfds_64_16
- Rajendran R, Sivapathasundharam B. Shafer’s Textbook of Oral Pathology. 6th ed. New Delhi: Elsevier; 2009.
- Sweet D. Why a dentist for identification? Dent Clin North Am 2001;45:237-51.
- Prabhu S, Acharya AB. Odontometric sex assessment in Indians. Forensic Sci Int 2009;192:129.e1-5.
- David S, Paul G. Forensic Dentistry. 2nd ed. Boca Raton: CRC Press; 2010.
- Subramanyam V. Modi’s Medical Jurisprudence and Toxicology. 22nd ed. New Delhi: Buttersworth; 2001.
- Prachi J. Sex determination in forensic odontology. J Forensic Odontostomat 2012;23:11-6.
- Pretty IA, Sweet D. A look at forensic dentistry – Part 1: The role of teeth in the determination of human identity. Br Dent J 2001;190:359-66.
- Sopher IM. The dentist, the forensic pathologist, and the identification of human remains. J Am Dent Assoc 1972;85:1324‑9.
- Schwartz S, Woolridge ED. The use of panoramic radiographs for comparisons in cases of identification. J Forensic Sci 1977;22:145‑6.
- Yadav S, Nagabhushana D, Rao BB, Mamatha GP. Mandibular canine index in establishing sex identity. Indian J Dent Res 2002;13:143-6.
- Garn SM, Lewis AB, Swindler DR, Kerewsky RS. Genetic control of sexual dimorphism in tooth size. J Dent Res 1967;46:963-72.
- Nair P. A study of tooth size symmetry and sexual dimorphism. J Forensic Med Toxicol 1999;16:10-3.
- Reddy V, Saxena S, Bansal P. Mandibular canine index as a sex determinant: A study on the population of Western Uttar Pradesh. J Oral Maxillofac Pathol 2008;12:56-9.
- Anderson DL, Thompson GW. Interrelationships and sex differences of dental and skeletal measurements. J Dent Res 1973;52:431-8.
- Marin V, Zeljko D, Vera N, Jadranka K, Hrvoje B. Odontometrics: A useful method for sex determination in an archeological skeletal population. J Archeol Sci 2007;37:905-13.
- Zorba E, Moraitis K, Manolis SK. Sexual dimorphism in permanent teeth of modern Greeks. Forensic Sci Int 2011;210:74-81.
- ChandraA, SinghA, BadniM, JaiswalR, AgnihotriA. Determination of sex by radiographic analysis of mental foramen in North Indian population. J Forensic Dent Sci 2013;5:52-5.
- Anna J, Harish K. How reliable is sex differentiation from teeth measurements. J Oral Maxillofac Pathol 2013;4:289-92.
- Shaliputra M, Wanjari P. Dimorphism of mandibular canine index in establishing in sex identity. J Indian Acad Oral Med Radiol 2011;23:195-8.
- Pettenati‑Soubayroux I, Signoli M, Dutour O. Sexual dimorphism in teeth: Discriminatory effectiveness of permanent lower canine size observed in a XVIIIth century osteological series. Forensic Sci Int 2002;126:227-32.
- Rao NG, Rao NN, Pai ML, Kotian MS. Mandibular canine index –A clue for establishing sex identity. Forensic Sci Int 1989;42:249-54.
- Vanaki S, Purnaik R. Tooth dimension as a distinguishing trait between human sexes. An odontometric study on Bagalkot population. Indian J Forensic Med Pathol 2008;1:75-80.
- Harris EF. A longitudinal study of arch size and form in untreated adults. Am J Orthod Dentofacial Orthop 1997;111:419-27.
- Kaushal S, Patnaik V. Sex determination in Northern Indians by mandibular canine index. J Indian Acad Forensic Med 2004;26:45-9.
- Zilberman O, Huggare JA, Parikakis KA. Evaluation of the validity of tooth size and arch width measurements using conventional and three-dimensional virtual orthodontic models. Angle Orthod 2003;73:301-6.
- Stanley J. Wheeler’s Dental Anatomy, Physiology and Occlusion. 9th ed. Missouri: Elsevier; 2010.
- Ibeachu P, Didia B. Sexual dimorphism in mandibular canine width and intercanine distance of university of Port-Harcourt student, Nigeria. Asian J Med Sci 2012;2:166-9.
- Alia O, Sonia A. Applicability of determination of gender from odontometric measurements of canine teeth in a sample of adult Egyptian population. Cairo Dent J 2009;25:167-80.
- Kaddah M. A cluster of analysis of a group of Egyptian adults having normal occlusion. Cairo Dent J 1998;14:283-92.
- Vishwakarma N, Guha R. A study of sexual dimorphism in permanent mandibular canines and its implications in forensic investigations. Nepal Med J 2011;13:96-9.
- Townsend G, Alvesalo L. Tooth size in 47, XYY males: Evidence for a direct effect of the Y chromosome on growth. Aust Dent J 1985;30:268-72.