Evaluation of a digital methodology for human identification using palatal rugoscopy

Authors

  • Karen Christine dos Santos São Paulo State University - UNESP
  • Clemente Maia S. Fernandes São Paulo State University - UNESP
  • Mônica da Costa Serra São Paulo State University - UNESP

DOI:

https://doi.org/10.20396/bjos.v10i3.8641631

Keywords:

Forensic sciences, Forensic anthropology, Forensic dentistry, Human identification, Palatal rugae

Abstract

Palatal rugoscopy, or palatoscopy, is the process by which human identification can be obtained by inspecting the transverse palatal rugae inside the mouth. Aim: This study evaluated a digital method for human identification using palatoscopy, by comparing photographs of the palate against the images of cast models of the maxilla photographed with and without highlighting of the palatal rugae. Methods: Condensation silicone impressions were made from the upper arches of 30 adult subjects of both genders and their palates were then photographed. The first impression was made with heavy silicone, the second impression with light silicone, and then the models were cast in improved type IV dental stone. The casts were photographed, the palatal rugae of each one were highlighted with a pencil, and then the models were photographed again. Using a free image-editing software, the digital photographs were overlapped over the images of the palatal rugae of the models with and without highlighting of the palatal rugae, in order to identify the pairs. Results: The result of overlapping the digital photographs with the images of the models without highlighted palatal rugae resulted in 90% positive identification. For the overlapping of the digital photographs with the images of models with highlighted palatal rugae, there was 100% positive identification. Conclusions: The digital method evaluated in this study was proven effective for human identification.

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Author Biographies

Karen Christine dos Santos, São Paulo State University - UNESP

DDS, Department of Social Dentistry, Faculty of Dentistry of Araraquara, São Paulo State University - UNESP

Clemente Maia S. Fernandes, São Paulo State University - UNESP

DDS, LL.B student, MSc, PhD, Post-Doctorate student, Department of Social Dentistry, Faculty of Dentistry of Araraquara, São Paulo State University - UNESP

Mônica da Costa Serra, São Paulo State University - UNESP

DDS, LL.B, MSc, PhD, Post-Doctor, Department of Social Dentistry, Faculty of Dentistry of Araraquara, São Paulo State University - UNESP

Published

2015-11-09

How to Cite

1.
Santos KC dos, Fernandes CMS, Serra M da C. Evaluation of a digital methodology for human identification using palatal rugoscopy. Braz. J. Oral Sci. [Internet]. 2015 Nov. 9 [cited 2022 Nov. 28];10(3):199-203. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641631

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