Abstract
In this study, the efficacy of dental tissues (cementum, dentine and pulp) and alveolar bone as a potential source of DNA was tested in terms of the quality and quantity using nuclear and mitochondrial markers for forensic investigation.This study found dentine as the best source of DNA with only 5.36% imbalanced (PHR<0.7) heterozygous loci. Pulp showed the highest quantity of DNA but exhibited 22.3% imbalanced (PHR<0.7) heterozygous loci. Cementum with highest (46.67%) heterozygote imbalance proved to be the last choice as a source of DNA. Alveolar bone exhibited the second-highest total yield of DNA/mg of tissue. All Global Filer™ STR loci were amplified in 70% samples of fresh alveolar bone whereas for 30% samples, only partial profile was generated along with successful sex determination. All the dental tissues and alveolar bone samples amplified non STR markers (D-loop, Cytochrome Oxidase I, SRY, AMEL). Of the alveolar bones from archival samples, one sample exhibited full STR profile whereas other alveolar bone samples gave partial profiles. This study substantiates alveolar bone as an alternate source of nuclear and mitochondrial DNA.
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