Postmortem examination of incinerated teeth with the scanning electron microscope

Area of Science:

• Forensic science
• Materials science
• Dental anatomy

Background:

• Forensic investigations often encounter fragmented and thermally altered remains.
• Accurate identification of human or animal tissues is crucial for legal and scientific purposes.
• Scanning electron microscopy (SEM) offers high-resolution imaging for detailed morphological analysis.

Observation:

• Fragments recovered from a burned gasoline truck wreckage were visually assessed.
• The fragments were suspected to be parts of teeth based on initial observations.
• SEM examination was employed to analyze the microstructure and morphology of the fragments.

Findings:

• SEM analysis confirmed the fragments exhibited characteristics consistent with dental tissues.
• The observed microstructural features matched previously documented SEM images of experimentally incinerated teeth.
• This microscopic comparison provided definitive evidence for the identification of the fragments as teeth.

Implications:

• SEM is a valuable tool for identifying thermally damaged dental remains in forensic contexts.
• This method aids in distinguishing dental fragments from other burnt materials.
• The findings support the use of comparative SEM analysis in forensic odontology and disaster victim identification.