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Year : 2018  |  Volume : 3  |  Issue : 1  |  Page : 2-5

Evaluation of accuracy of human bite marks on skin and an inanimate object: A forensic-based cross-sectional study

Department of Oral Medicine and Radiology, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu, India

Correspondence Address:
Dr. K Saraswathi Gopal
From the Department of Oral Medicine and Radiology, Meenakshi Ammal Dental College and Hospital, Chennai, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijfo.ijfo_20_17

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Introduction: Bite marks are often observed at crime scenes on various parts of the human body. Bite marks have also been observed on various edible leftovers at the crime scenes which were used as evidence for identifying the criminals. Objective: The objective of the study is to compare the accuracy of bite marks on an inanimate substance (fruit) and a living tissue (skin) using digital analysis. Materials and Methods: A cross-sectional study was conducted involving 25 volunteers. The registered bites of individuals on inanimate object (fruit) and living tissue (skin of forearm) were photographed with the American Board of Forensic Odontology scale No. 2 in the view field immediately after the production of bite marks. Dental casts of the individuals were obtained and photographed out of which computer-assisted overlays were generated, and analysis was carried out digitally using Adobe Photoshop version developed by Adobe Systems. Statistical analysis was performed using IBM SPSS software, version 22 and Chi-square test. Results: Skin had a comparable accuracy to that of an inanimate object which is statistically attested. Conclusion: The source of bite marks, the substrate onto which they are generated and the technique of lifting the bite imprints serve as important tools in analysis.

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