Radiographic evaluation of mandibular ramus for gender estimation: Retrospective study

##plugins.themes.academic_pro.article.sidebar##

Published Aug 1, 2016
Download
pdf
Statistic

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...
Volume 8, Issue 2, May-August 2016

##plugins.themes.academic_pro.article.main##

Ajit Damera
Department of Oral Medicine and Radiology, GITAM Dental College and Hospital, Visakhapatnam, Andhra Pradesh
Jonnala Mohanalakhsmi
Department of Oral Medicine and Radiology, GITAM Dental College and Hospital, Visakhapatnam, Andhra Pradesh
Pavan Yellarthi
Department of Oral Medicine and Radiology, GITAM Dental College and Hospital, Visakhapatnam, Andhra Pradesh
Begum Rezwana
Department of Oral Medicine and Radiology, GITAM Dental College and Hospital, Visakhapatnam, Andhra Pradesh

Abstract

Background and Aims: Gender estimation is a very important part of a study in the field of anthropology and forensic sciences. In the skeleton, gender estimation is the first step of the identification process as subsequent methods for age and stature estimation are sex-dependent. Skeletal components such as the pelvis and skull are investigated for gender estimation and the mandible is a practical element to analyze sexual dimorphism in fragmented bones. The aim of the present study is to measure, compare, and evaluate various measurements of the mandibular ramus, observed in digital orthopantomographs and also to assess the usefulness of the mandibular ramus as an aid in gender estimation. Materials and Methods: A radiographic retrospective study was conducted using 80 digital orthopantomographs to measure, compare, and evaluate the measurements of the mandibular ramus such as maximum ramus breadth, maximum ramus height, and coronoid heightusing Planmeca ProMax® digital machine to assess the usefulness of mandibular measurements in gender estimation. Results: Descriptive statistics of various measurements and associated univariate F ratios for both the sexes were determined. Four variables were significant predictor in classifying a given sample (P < 0.001). The F-statistic values indicated that measurements expressing the greatest sexual dimorphism were noticed in the maximum ramus height. Conclusion: Mandibular ramus can be considered as a valuable tool in gender estimation and the most reliable measurements were obtained of linear objects in the horizontal plane by digital panoramic imaging.

##plugins.themes.academic_pro.article.details##

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite
Ajit Damera, Jonnala Mohanalakhsmi, Pavan Yellarthi, & Begum Rezwana. (2016). Radiographic evaluation of mandibular ramus for gender estimation: Retrospective study. Journal of Forensic Dental Sciences, 8(2), 74–78. Retrieved from https://jfds.org/index.php/jfds/article/view/467

References

  1. 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.
  2. Raj JD, Ramesh S. Sexual dimorphism in mandibular ramus of South Indian population. J Anthropol 2013;9:253-8.
  3. 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;32:81-7.
  4. Loth SR, Hennerberg M. Mandibular ramus flexure: A new morphological indicator of sexual dimorphism in the human skeleton. Am J Phys Anthropol 1996;99:473‑85.
  5. Vodanović M, Dumančić J, Demo Ž, Mihelić D. Determination of sex by discriminant functional analysis of mandible from two Croatian archaeological sites. Acta Stomatol Croat 2006;40:263‑77.
  6. Humphrey LT, Dean MC, Stringer CB. Morphological variation in great ape and modern human mandibles. J Anat 1999;195:491-513.
  7. Razi T, Moslemzade SH, Razi S. Comparison of linear dimensions and angular measurements on panoramic images taken with two machines. J Dent Res Dent Clin Dent Prospects 2009;3:7-10.
  8. Shahabi M, Ramazanzadeh BA, Mokhber N. Comparison between the external gonial angle in panaromic radiographs and lateral cephalographs of adult patients with class I malocclusion. J Oral Sci 2009;51:425-9.
  9. Kambylafkas P, Murdock E, Gilda E, Tallents RH, Kyrkanides S. Validity of panoramic radiographs for measuring mandibular asymmetry. Angle Orthod 2006;76:388‑93.
  10. Schulze R, Krummenauer F, Schalldac F, d’Hoedt B. Precision and accuracy of measurements in digital radiography. Dentomaxillofac Radiol 2000;29:52‑6.
  11. Shivaprakash S, Vijaykumar AG. Sex determination by using mandibular ramus posterior flexure ‑ A prospective study. Int J Health Sci Res 2014;4:155-9.
  12. Aparna N, Dhanasekar B, Gupta L, Lingeshwar D. Medial mandibular flexure: A review of concepts and consequences. Int J Oral Implantol Clin Res 2011;2:67‑71.
  13. Galdames IC, Valenzuela JS, Quezada NA, Contreras CE, Rivas JA, López MC. Ortopantomographic blind test of mandibular ramus flexure as morphological indicator of sex in Chilean young adults. Int J Morphol 2008;26:89‑92.
  14. Tillier A, Bruzek J. Mandibular ramus posterior flexure: A sex indicator in Homosapiens fossil hominids. Int J Osteoarcheol 2000;10:426‑31.
  15. PokhrelR, Bhatnagar R. Sexing of mandible using ramus and condyle in Indian population: A discriminant function analysis. Eur J Anat 2013;17:39-42.
  16. Saini V. Metric study of fragmentary mandibles in a North Indian population. Bull Int Assoc Paleodont 2013;7:157‑62.
  17. Zangouei-Booshehri M, Aghili HA, Abasi M, Ezoddini-Ardakani F. Agreement between panoramic and lateral cephalometric radiographs for measuring the gonial angle. Iran J Radiol 2012;9:178-82.
  18. G V, Gowri SR, J A. Sex determination of human mandible using metrical parameters. J Clin Diagn Res 2013;7:2671‑3