Evaluation of Diagnostic Values of a Gender Discrimination Function, Based on Mandibular Dimorphic Parameters in Iranian Population


  • Farzaneh Ostovar Rad
  • Abbas Shokri
  • Bahareh Javanshi
  • Faezeh Kashi
  • Mahsa Fazilat


Forensic Dentistry, Sex Determination by Skeleton, Diagnostic Imaging


Objective: To evaluate mandibular dimorphic parameters for sex determination by using panoramic radiographs and comparing the results with another equation. Material and Methods: In this analytical-descriptive study, the mandible variables, including the ramus height, the coronoid height, the mental height, and the distance between the right and left condyle, were measured in 326 panoramic radiographs. The discriminant function of the statistical method has previously been used to evaluate the diagnostic value of sex. The level of significance was considered 0.05. Results: The detection function obtained was statistically significant in quantitative correlation (p<0.001) with 99% agreement. Moreover, good sensitivity (81.72%), specify (80.25%), and moderate to good predictive values (PPV: 62.29 and NPV:91.6) were found. Among the mandibular parameters, chin height, ramus height, coronoid height, and distance between two condyles showed the highest gender dimorphism. Conclusion: Chin height, and ramus height have the most quality in gender dimorphism. A unique gender discrimination function has been obtained from the results.


Damera A, Mohanalakhsmi J, Yellarthi PK, Rezwana BM. Radiographic evaluation of mandibular ramus for gender estimation: Retrospective study. J Forensic Dent Sci 2016; 8(2):74-78. https://doi.org/10.4103/0975-1475.186369

Indira AP, Markande A, David MP. Mandibular ramus: An indicator for sex determination - A digital radiographic study. J Forensic Dent Sci 2012; 4(2):58-62. https://doi.org/10.4103/0975-1475.109885

AL‐Shamout R, Ammoush M, Alrbata R, AL‐Habahbah A. Age and gender differences in gonial angle, ramus height and bigonial width in dentate subjects. Pak Oral Dental J 2012; 32(1):81‐87.

Loth SR, Hennerberg M. Mandibular ramus flexure: A new morphological indicator of sexual dimorphism in the human skeleton. Am J Phys Anthropol 1996; 99(3):473‐485.

Sandeepa NC, Ganem AA, Alqhtani WA, Mousa YM, Abdullah EK, et al. Mandibular indices for gender prediction: A retrospective radiographic study in Saudi population. J Dent Oral Health 2017; 3(9):1-7.

Ostovar Rad F, Javanshir B, Nemati S, Khaksari F, Mansoori R, Ranjzad H, et al. Evaluation of sexual dimorphism with mandibular parameters by digital panoramic radiography. Open Dent J 2020; 14(1):172-177. https://doi.org/10.2174/1874210602014010172

Sairam V, Geethamalika MV, Kumar PB, Naresh G. Determination of sexual dimorphism in humans by measurements of mandible on digital panoramic radiograph. Contemp Clin Dent 2016; 7(4):434-439. https://doi.org/10.4103/0976-237x.194110

Sambhana S, Sanghvi P, Mohammed RB, Shanta PP, Thetay AA, Chaudhary VS. Assessment of sexual dimorphism using digital orthopantomographs in South Indians. J Forensic Dent Sci 2016; 8(3):180. https://doi.org/10.4103/0975-1475.195113

Catić A, Celebić A, Valentić-Peruzović M, Catović A, Kuna T. Dimensional measurements on the human dental panoramic radiographs. Coll Antropol 1998; 22(Suppl):139-145.

Schulze R, Krummenauer F, Schalldach F, d'Hoedt B. Precision and accuracy of measurements in digital radiography. Dentomaxillofac Radiol 2000; 29(1):52-56. https://doi.org/10.1038/sj.dmfr.4600500

Garba SH, Numan AI, Mishara IG. Craniofacial classification of normal newborns in Maiduguri Metropolis, Nigeria. Int J Morphol 2008; 26(2):407-410. https://doi.org/10.4067/s0717-95022008000200026

Anderson DL, Thompson GW. Interrelationships and sex differences of dental and skeletal measurements. J Dent Res 1973; 52(3):431-438. https://doi.org/10.1177/00220345730520030701

Luo YC. Sex determination from the pubis by discriminant function analysis. Forensic Sci Int 1995; 74(1-2):89-98. https://doi.org/10.1016/0379-0738(95)01739-6

Vodanovic M, Demo Z, Njemiroveskij T, Keros J, Berkic H. Odontometrics: A useful method for sex determination in an archaeological skeletal population. J Archaeol Sci 2007; 34:905-13. https://doi.org/10.1016/j.jas.2006.09.004

Bhagwatkar T, Thakur M, Palve D, Bhondey A, Dhengar Y, Chaturvedi S. Sex determination by using mandibular ramus-A forensic study. J Adv Med Dent Scie Res 2016; 4(2):1-6. https://doi.org/10.4103/0975-1475.186367

Franklin D, Higgins PO, Oxnard CE, Dadour I. Determination of sex in South African blacks by discriminant function analysis of mandibular linear dimensions: a preliminary investigation using the Zulu local population. Forensic Sci Med Pathol 2006; 2(4):263-268. https://doi.org/10.1385/fsmp:2:4:263

More CB, Vijayvargiya R, Saha N. Morphometric analysis of mandibular ramus for sex determination on digital orthopantomogram. Forensic Dent Sci 2017; 9(1):1-5. https://doi.org/10.4103/jfo.jfds_25_15

Hazari P, Hazari RS, Mishra SK, Agrawal S, Yadav M. Is there enough evidence so that mandible can be used as a tool for sex dimorphism? A systematic review. J Forensic Dent Sci 2016; 8(3):174. https://doi.org/10.4103/0975-1475.195111

Kharoshah MA, Almadani O, Ghaleb SS, Zaki MK, Fattah YA. Sexual dimorphism of the mandible in a modern Egyptian population. J Forensic Leg Med 2010; 17(4):213-215. https://doi.org/10.1016/j.jflm.2010.02.005




How to Cite

Rad, F. O., Shokri, A., Javanshi, B., Kashi, F., & Fazilat, M. (2024). Evaluation of Diagnostic Values of a Gender Discrimination Function, Based on Mandibular Dimorphic Parameters in Iranian Population. Pesquisa Brasileira Em Odontopediatria E Clínica Integrada, 24, e220230. Retrieved from https://revista.uepb.edu.br/PBOCI/article/view/3198



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