Radiographic evaluation of remodeling of mandible in adult South Indian population: Implications in forensic science


  • Veena Krishnan Department of Oral and Medicine and Radiology, Government Dental College, Kottayam, Kerala
  • L Sreela Department of Oral and Medicine and Radiology, Government Dental College, Kottayam, Kerala
  • Philips Mathew Department of Oral and Medicine and Radiology, Government Dental College, Kottayam, Kerala
  • Twinkle Prasad Department of Oral and Medicine and Radiology, Government Dental College, Kottayam, Kerala



Antegonial angle, antegonial depth, forensic dentistry, gender, gonial angle, panoramic radiograph


Introduction: Panoramic X-ray is an imagiological examination produced by a technique that exhibits images of the facial structure present in the upper and lower dental arches, as well as the support structures in the diagnosis of problems that require a broad view of the oral–maxillofacial complex, such as the assessment of traumatisms, extensive lesions, dental development, tooth retention, and growth anomalies. Many morphological and anatomical changes are exhibited by the mandible with the advancement of age and changes in gender, as well as dentoalveolar condition of the patient, and it can be assessed with the help of such radiograph, thus playing an important role in personal identification in forensic dentistry. Aims: This study aimed to evaluate the changes in gonial angle (GA), antegonial angle (AGA), and antegonial depth (AGD) in adult mandible with regard to age, gender, and dental status using panoramic radiographs. Settings and Design: This cross-sectional retrospective study was done using hospital records. Subjects and Methods: A total of 100 panoramic radiographs were evaluated. The images were grouped into three age groups (40–70) of 10 years each. GA, AGA, and AGD were digitally measured from the radiographs. Statistical Analysis Used: Descriptive statistics of the variables were expressed in percentage, frequencies, mean, and standard deviations. Statistical differences between the variables were explored using independent sample t-test and one-way ANOVA. The significant level was set as 0.05. Results: There were no significant changes in GA, AGA, and AGD with age and dental status of the patients. Males had significantly smaller GA and AGA than females. Understandably, AGD was significantly greater in males than females.Conclusions: Remodeling changes of the mandible with respect to the age groups and dental status studied were minimal. However, gender-related differences in ante AGA, depth, and GA were significant, which can be used as a tool in forensic identification.


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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.

Okşayan R, Aktan AM, Sökücü O, Haştar E, Ciftci ME. Does the panoramic radiography have the power to identify the gonial angle in orthodontics? ScientificWorldJournal 2012;2012:219708.

Kitai N, Mukai Y, Murabayashi M, Kawabata A, Washino K, Matsuoka M, et al. Measurement accuracy with a new dental panoramic radiographic technique based on tomosynthesis. Angle Orthod 2013;83:117‑26.

Bhullar MK, Uppal AS, Kochhar GK, Chachra S, Kochhar AS. Comparison of gonial angle determination from cephalograms and orthopantomogram. Indian J Dent 2014;5:123‑6.

Park JW, Huh KH, Yi WJ, Heo MS, Lee SS, Choi SC. Comparison of the reproducibility of panoramic radiographs between dentulous and edentulous patients. Imaging Sci Dent 2014;44:95‑102.

Nohadani N, Ruf S. Assessment of vertical facial and dentoalveolar changes using panoramic radiography. Eur J Orthod 2008;30:262‑8.

Ghosh S, Vengal M, Pai K. Remodeling of the human mandible in the gonial angle region: A panoramic radiographic cross‑sectional study. Oral Radiol 2009;25:2‑5.

Enlow DH, Bianco HJ, Eklund S. The remodeling of the edentulous mandible. J Prosthet Dent 1976;36:685‑93.

Shahabi M, Ramazanzadeh BA, Mokhber N. Comparison between the external gonial angle in panoramic radiographs and lateral cephalograms of adult patients with class I malocclusion. J Oral Sci 2009;51:425‑9.

Saini V, Srivastava R, Rai RK, Shamal SN, Singh TB, Tripathi SK. Mandibular ramus: An indicator for sex in fragmentary mandible. J Forensic Sci 2011;56 Suppl 1:S13‑6.

Preston B, Al‑Sehaibany F, Salem O. The morphology of the mandibular antegonial notches and facial symmetry. J Clin Pediatr Dent 2002;26:155‑60.

Chole RH, Patil RN, Balsaraf Chole S, Gondivkar S, Gadbail AR, Yuwanati MB. Association of mandible anatomy with age, gender, and dental status: A radiographic study. ISRN Radiol 2013;2013:453763.

Dutra V, Yang J, Devlin H, Susin C. Mandibular bone remodelling in adults: Evaluation of panoramic radiographs. Dentomaxillofac Radiol 2004;33:323‑8.

Huumonen S, Sipilä K, Haikola B, Tapio M, Söderholm AL, Remes‑Lyly T, et al. Influence of edentulousness on gonial angle, ramus and condylar height. J Oral Rehabil 2010;37:34‑8.

Okşayan R, Asarkaya B, Palta N, Şimşek İ, Sökücü O, İşman E. Effects of edentulism on mandibular morphology: Evaluation of panoramic radiographs. ScientificWorldJournal 2014;2014:254932.

Upadhyay RB, Upadhyay J, Agrawal P, Rao NN. Analysis of gonial angle in relation to age, gender, and dentition status by radiological and anthropometric methods. J Forensic Dent Sci 2012;4:29‑33.

Xie Q, Wolf J, Soikkonen K, Ainamo A. Height of mandibular basal bone in dentate and edentulous subjects. Acta Odontol Scand 1996;54:379‑83.

Ali IM, Yamada K, Hanada K. Mandibular antegonial and ramus notch depths and condylar bone change. J Oral Rehabil 2005;32:1‑6.

Bakke M, Holm B, Jensen BL, Michler L, Möller E. Unilateral, isometric bite force in 8‑68‑year‑old women and men related to occlusal factors. Scand J Dent Res 1990;98:149‑58.

Heath MR. A Morphologic and Radiographic Study of the Postural and Functional Inter Relationships of the Cheeks, Lips and Tongue in Edentulous Persons. Ph. D. Thesis. London; 1976. p. 162.

Schwartz‑Dabney CL, Dechow PC. Edentulation alters material properties of cortical bone in the human mandible. J Dent Res 2002;81:613‑7.

Sicher H, DuBrul EL. Oral Anatomy. 6th ed. St Louis: The CV Mosby Co; 1975. p. 121.




How to Cite

Veena Krishnan, L Sreela, Philips Mathew, & Twinkle Prasad. (2019). Radiographic evaluation of remodeling of mandible in adult South Indian population: Implications in forensic science. Journal of Forensic Dental Sciences, 11(3), 137–141.