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[Forensic Individual Identification Based on the New Coding Method of Oral Pano-ramic Tomography].

M Liu1, F Fan1, C Sun2

  • 1West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610041, China.

Fa Yi Xue Za Zhi
|February 7, 2021
PubMed
Summary

A new coding method using oral panoramic tomography offers potential for forensic individual identification. Specific tooth modules, particularly right mandibular teeth, show high diversity and consistency for reliable identification.

Keywords:
forensic anthropology; forensic odontology; oral panoramic tomography; diversity; identification

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Area of Science:

  • Forensic Odontology
  • Radiology
  • Biometrics

Background:

  • Individual identification is crucial in forensic science.
  • Oral panoramic tomography provides detailed dental images.
  • Developing accurate and efficient identification methods is essential.

Purpose of the Study:

  • To introduce and evaluate a novel coding method for individual identification using oral panoramic tomography.
  • To analyze the diversity and consistency of different coding modules within homologous and nonhomologous dental images.
  • To assess the practical application value of the coding method and its modules in forensic identification.

Main Methods:

  • Retrospective collection of 1,000 oral panoramic tomography images from patients with permanent teeth.
  • Development of a new coding method applied to dental images.
  • Utilizing a computer program to analyze module diversity, consistency, and matching rates between early and late image databases.
  • Comparison of coding indexes between homologous and nonhomologous images.

Main Results:

  • Four specific modules reflecting tooth characteristics demonstrated significantly higher diversity.
  • The module representing right mandibular teeth exhibited the highest diversity in both early and late image databases.
  • Coding consistency for the four key modules exceeded 50%.
  • A matching rate of over 80% was achieved for 90.2% of homologous image index comparisons.

Conclusions:

  • The developed coding method, particularly using modules of right mandibular teeth, shows significant potential for individual identification.
  • The coding method is deemed valuable for forensic applications.
  • The identified modules possess high application value in forensic individual identification.