DNA collection from used toothbrushes as a means to decedent identification

Am J Forensic Med Pathol. 2012 Dec;33(4):354-6. doi: 10.1097/PAF.0b013e318221be52.

Abstract

Comparison of DNA profiles is often used in verifying the identification of deceased human beings when other easier, quicker, and less expensive means to identification are not possible. Fifty-five adult subjects divided into 3 groups provided a used toothbrush along with a small bloodstain control for DNA analysis and comparison. Results indicate that there is no significant difference in the quantity and quality of DNA recovered from a toothbrush that has been used for 1 month versus 3 months versus random periods. The results of this study confirm earlier conclusions that a used toothbrush is a reliable source of antemortem DNA from a putative decedent. The use of aviation snips to remove a small portion of the toothbrush head provides an easy, inexpensive method of obtaining a sample for DNA extraction. The authors recommend this method as a standardized technique for use in forensic DNA laboratories.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Case-Control Studies
  • DNA / analysis
  • DNA / isolation & purification*
  • DNA Fingerprinting / methods*
  • Female
  • Humans
  • Male
  • Toothbrushing / instrumentation*

Substances

  • DNA