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Published on: December 31, 2017
[Molecular biological studies on teeth inquests]
1Department of Forensic Medicine, Kanagawa Dental College, Japan.
Nihon Hoigaku Zasshi = the Japanese Journal of Legal Medicine
|December 1, 1992
Summary
Tooth analysis enables age estimation via amino acid racemization and DNA typing for identification. Dental records also aid in rapid identification following disasters.
Area of Science:
- Forensic Odontology
- Biochemistry
- Molecular Biology
Context:
- Tooth analysis offers unique insights into age estimation and DNA profiling.
- Dentin's amino acid composition and pulp DNA are crucial forensic markers.
- Established dental and radiographic records are vital for identification.
Purpose:
- To explore tooth-based methods for age estimation using amino acid racemization.
- To investigate DNA typing from teeth for identification, including degraded samples.
- To highlight the role of dental records in forensic identification.
Summary:
- Age estimation achieved with high accuracy (>0.99 correlation) using amino acid racemization in dentin, particularly soluble peptides.
- Successful DNA typing and sex determination from teeth, even after 21 months post-extraction and with degraded DNA using PCR.
- Dental and radiographic records facilitate rapid personal identification in mass casualty incidents.
Impact:
- Establishes reliable biochemical and molecular techniques for forensic age and identity determination from teeth.
- Demonstrates the resilience of DNA in teeth for forensic applications.
- Underscores the critical importance of comprehensive dental records in forensic investigations.
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