Determination of Age and Sex Using Bimastoid Diameter: a Cone Beam Computed Tomography Study
DOI:
https://doi.org/10.15517/ijds.2022.48365Keywords:
Bimastoid diameter; Mastoid; Cone-beam computed tomography; Forensic science.Abstract
This study aimed to investigate the possibility of age and sex determination using bimastoid diameter with cone-beam computed tomography (CBCT). This retrospective study investigated 100 female and 100 male patients aged 18-83 years (mean age: 45.55±16.28 years). To measure bimastoid diameter, the appropriate image was chosen from sagittal, coronal, and axial images of CBCT in which the measurement points could be best detected. The distance between the points of the mastoid process was measured using three-dimensional coronal reconstruction. The mean bimastoid breadth was 106.12±6.22mm. The bimastoid diameter in male cases was higher than that in female cases (110.69±4.53mm vs. 101.65±4.00mm). There was no significant difference in bimastoid breadth with advancing age. For sex determination, morphometric measurements of bimastoid diameter ensured a high rate of dimorphism in the Turkish subpopulation. CBCT morphometric analysis may be reliable and convenient for evaluating sex and may be recommended to compare population data.
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Ekizoglu O., Hocaoglu E., Inci E., Can I.O., Solmaz D., Aksoy S., et al. Assessment of sex in a modern Turkish population using cranial anthropometric parameters. Leg Med (Tokyo) 2016; 21: 45-52. DOI: https://doi.org/10.1016/j.legalmed.2016.06.001
Manoonpol C., Plakornkul V. Sex determination using mastoid process measurement in Thais. J Med Assoc Thai 2012; 95 (3): 423-429.
Petaros A., Sholts S.B., Slaus M., Bosnar A., Wärmländer S.K. Evaluating sexual dimorphism in the human mastoid process: A viewpoint on the methodology. Clin Anat 2015; 28 (5): 593-601. DOI: https://doi.org/10.1002/ca.22545
Kanchan T., Gupta A., Krishan Kewal. Estimation of sex from mastoid triangle - A craniometric analysis. J Forensic Leg Med 2013; 20 (7): 855-860. DOI: https://doi.org/10.1016/j.jflm.2013.06.016
Krogman W.M., Iscan M.Y. The Human Skeleton in Forensic Medicine, Springfield, IL: Charles C. Thomas; 1986.
Kranioti E.F., Iscan M.Y., Michalodimitrakis M. Craniometric analysis of the modern Cretan population. Forensic Sci Int 2008; 180: 110.e1-e5 DOI: https://doi.org/10.1016/j.forsciint.2008.06.018
Saini V., Srivastava R., Rai R.K., Shamal S.N., Singh T.B., Tripathi S.K. An osteometric study of Northern Indian populations for sexual dimorphism in craniofacial region. J Forensic Sci 2011; 56: 700-705. DOI: https://doi.org/10.1111/j.1556-4029.2011.01707.x
Ogawa Y., Imaizumi K., Miyasaka S., Yoshino M. Discriminant functions for sex estimation of modern Japanese skulls. J Forensic Leg Med 2013; 20 (4): 234-238. DOI: https://doi.org/10.1016/j.jflm.2012.09.023
Grabherr S., Cooper C., Ulrich-Bochsler S., Uldin T., Ross S., Oesterhelweg L., et al. Estimation of sex and age of ‘‘virtual skeletons’’ a feasibility study. Eur Radiol 2008; 19: 419-429. DOI: https://doi.org/10.1007/s00330-008-1155-y
Dedouit F., Telmon N., Costagliola R., Otal P., Joffre F., Rouge D. Virtual anthropology and forensic identification: report of one case. Forensic Sci Int 2007; 173: 182-187. DOI: https://doi.org/10.1016/j.forsciint.2007.01.002
Hsiao T.H., Tsai S.M., Chou S.T., Pan J.Y., Tseng Y.C., Chang H.P., et al. Sex determination using discriminant function analysis in children and adolescents: a lateral cephalometric study. Int J Leg Med 2010; 124 (2): 155-160. DOI: https://doi.org/10.1007/s00414-009-0412-1
Gonzalez R.A. Determination of sex from juvenile crania by means of discriminant function analysis. J Forensic Sci 2012; 57 (1): 24-34. DOI: https://doi.org/10.1111/j.1556-4029.2011.01920.x
Günay Y., Altinkök M. The value of the size of foramen magnum in sex determination. J Clin Forensic Med 2000; 7 (3): 147-149. DOI: https://doi.org/10.1054/jcfm.2000.0430
Tatlisumak E., Ovali G.Y., Asirdizer M., Aslan A., Ozyurt B., Bayindir P., et al. CT study on morphometry of frontal sinus. Clin Anat 2008; 21 (4): 287-293. DOI: https://doi.org/10.1002/ca.20617
Ekizoglu O., Inci E., Hocaoglu E., Sayin I., Kayhan F.T., Can I.O. The use of maxillary sinus dimensions in gender determination: a thin-slice multidetector computed tomography assisted morphometric study. J Craniofac Surg 2014; 25 (3): 957-960. DOI: https://doi.org/10.1097/SCS.0000000000000734
Yılmaz M.T., Yüzbasioglu N., Cicekcibasi A.E., Seker M., Sakarya M.E. The evaluation of morphometry of the mastoid process using multidetector computed tomography in a living population. J Craniofac Surg 2015; 26 (1): 259-263. DOI: https://doi.org/10.1097/SCS.0000000000001216
Buran F., Can I.O., Ekizoglu O., Balci A., Guleryuz H. Estimation of age and sex from bimastoid breadth with 3D computed tomography. Rom J Leg Med 2018; (26): 56-61.
Saini V., Srivastava R., Rai R., Shamal S.N., Singh T.B., Tripathi S.K. Sex estimation from the mastoid process among North Indians. J Forensic Sci 2012; 57 (2): 434-439. DOI: https://doi.org/10.1111/j.1556-4029.2011.01966.x
Marinescu M., Panaitescu V., Rosu M., Maru N., Punga A. Sexual dimorphism of crania in a Romanian population: Discriminant function analysis approach for sex estimation. Rom J Leg Med 2014; 22 (1): 21-26. DOI: https://doi.org/10.4323/rjlm.2014.21
ain D., Jasuja O.P., Nath S. Sex determination of human crania using mastoid triangle and opisthion-bimastoid triangle. J Forensic Leg Med 2013; 20 (4): 255-259. DOI: https://doi.org/10.1016/j.jflm.2012.09.020
Steyn M., İşcan M.Y. Sexual dimorphism in the crania and mandibles of South African whites. Forensic Sci Int 1998; 30; 98 (1-2): 9-16. DOI: https://doi.org/10.1016/S0379-0738(98)00120-0
Walker P.L. Sexing skulls using discriminant function analysis of visually assessed traits. Am J Phys Anthropol 2008; 136 (1): 39-50. DOI: https://doi.org/10.1002/ajpa.20776
Sakaue K., Adachi N. Evaluation of the sexing methods using the cranial traits in the Japanese population [abstract]. Nihon Hoigaku Zasshi 2009; 63 (2): 125-140.
Cekdemir Y.E., Mutlu U., Karaman G., Balci A. Estimation of sex using morphometric measurements performed on cranial computerized tomography scans. Radiol Med 2021; 126 (2): 306-315. DOI: https://doi.org/10.1007/s11547-020-01233-8
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