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Dental identification in routine forensic casework: clinical and postmortem investigations
1Department of Legal Medicine, Osaka City University Medical School, Asahi-machi 1-4-3, Abeno, Osaka 545-8585, Japan.
Legal Medicine (Tokyo, Japan)
|August 26, 2003
Summary
Dental restorations change over time, impacting forensic identification. Lower anterior teeth are more stable, while molars change more frequently, aiding in identifying unknown human remains.
Area of Science:
- Forensic Odontology
- Anthropology
- Pathology
Background:
- Dental evidence is crucial for identifying unknown human remains.
- Changes in dental treatments and postmortem conditions can complicate identification.
- Accurate ante-mortem dental records are essential for reliable forensic casework.
Purpose of the Study:
- To analyze factors affecting dental identification of unknown human remains.
- To evaluate the practical value of dental evidence in forensic casework.
- To assess changes in dental treatments and postmortem interference.
Main Methods:
- Reviewed dental histories of 696 patients from two clinics.
- Examined 260 unknown remains from 971 forensic autopsy cases (1992-1998).
- Assessed changes due to dental treatment and postmortem deterioration.
Main Results:
- Dental restorations increased most in the first 1-2 years post-examination.
- Lower anterior teeth showed stability over time; molars were frequently restored or missing.
- Postmortem damage (decomposition, fire) was more common in anterior teeth.
Conclusions:
- Early dental treatments contribute more significantly to identification.
- Dental evidence is most useful when corroborated by other evidence and complete records.
- Precise documentation, a missing persons database, and screening systems enhance dental identification efficacy.