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Dental radiographic identification utilising computerised digital slice interposition: a case report

C C Tai¹, B R Blenkinsop, R E Wood

¹Dept. of Dentistry, Forensic Pathology Branch, Ministry of the Solicitor General, Toronto, Ontario.

The Journal of Forensic Odonto-Stomatology

|June 1, 1993

Summary

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Digital comparison of ante-mortem and post-mortem dental radiographs revealed high consistency in identifying individuals. Minor discrepancies in dental restorations and root fragments were noted but explained, supporting radiographic identification methods.

Area of Science:

Forensic Odontology
Digital Radiography
Image Analysis

Background:

Establishing individual identity from dental records is crucial in forensic investigations.
Digital radiography offers advanced tools for analyzing dental evidence.

Observation:

Ante-mortem and post-mortem periapical dental radiographs were digitized and compared using image editing software.
Key features analyzed included dental restorations, root morphology, periodontal ligaments, pulp spaces, bony trabeculation, and retained root fragments.

Findings:

A high degree of consistency was observed between ante-mortem and post-mortem radiographs for most dental features.
Two discrepancies were identified concerning dimensional differences in dental restorations and a retained root fragment.

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These discrepancies were attributable to acceptable, non-identity-altering factors.

Implications:

Digital comparison of dental radiographs is a viable method for positive identification in forensic cases.
Understanding potential sources of minor discrepancies is essential for accurate interpretation of radiographic evidence.
This technique enhances the reliability of dental evidence in legal and identification contexts.