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Published on: March 9, 2015
The tooth for molecular analysis and identification : a forensic approach
A Corte-Real1, M J Anjos, D M Vieira
1Faculty of Medicine, University of Coimbra, Portugal. a.corte.real4@gmail.com
The Journal of Forensic Odonto-Stomatology
|September 25, 2012
Summary
For DNA identification, the apical portion of a tooth yields more DNA. This study optimized lab preparation by analyzing DNA quantity and quality in different tooth sections.
Area of Science:
- Forensic Odontology
- Molecular Biology
- Biochemistry
Background:
- Optimizing laboratory preparation of teeth is crucial for accurate DNA identification.
- Understanding variations in DNA quantity and quality within dental tissues can improve forensic analysis.
Purpose of the Study:
- To determine if different radicular portions of a tooth contain varying amounts and qualities of DNA.
- To identify the optimal tooth section for DNA extraction in laboratory settings.
Main Methods:
- Twenty-five teeth were sectioned topographically into apical and remaining root portions.
- DNA was quantified in each portion, and DNA quality was assessed using various polymorphic markers.
Main Results:
- The apical portion of the tooth demonstrated a statistically significant higher quantity of DNA compared to other sections.
- Differences in DNA quantity and quality were observed between the topographical tooth portions.
Conclusions:
- Tooth structure exhibits topographical variations in DNA content and integrity.
- The apical portion of the tooth is the preferred site for sample preparation in molecular analysis for DNA identification.
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