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Teeth01:15

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Related Experiment Video

Updated: Dec 17, 2025

Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis
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Aging and trace elements in human coronal tooth dentine.

Ana C Fernández-Escudero1, Isabel Legaz2, Gemma Prieto-Bonete1

  • 1Department of Legal and Forensic Medicine, Biomedical Research Institute (IMIB), Regional Campus of International Excellence "Campus Mare Nostrum", Faculty of Medicine, University of Murcia, Murcia, Spain.

Scientific Reports
|June 21, 2020
PubMed
Summary
This summary is machine-generated.

Forensic odontology uses trace elements in dentine for identification. Lead (Pb) and Potassium (K) concentrations in teeth correlate with age, aiding in forensic age estimation.

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Area of Science:

  • Forensic Science
  • Anthropology
  • Toxicology

Background:

  • Teeth are crucial for individual identification in forensic odontology when other methods fail.
  • Dentine undergoes physiological trace element exchange post-mineralization, influenced by various factors.
  • Understanding trace element concentrations in dentine can offer insights into an individual's biological profile.

Purpose of the Study:

  • To investigate the concentration of 25 trace elements in human coronal dentine.
  • To determine the relationship between trace element concentrations, sex, tooth type, and age.
  • To assess the potential of trace elements for age estimation in forensic contexts.

Main Methods:

  • Analysis of 25 trace elements in 150 human coronal dentine samples.
  • Classification of teeth by age groups, sex, and tooth type.
  • Quantification using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and Atomic Emission Spectroscopy (AES).

Main Results:

  • Toxic elements detected: Al > Pb > Sn > Li > As > Cd. Essential elements detected: Ca > P > Mg > Na > S > K > Sr > Zn > Ba > Fe > B > Ti > Mn > Cr > Ni > Cu > Co > Se > V.
  • Increased concentrations of toxic (Pb, Li, Sn) and essential (B, Ba, K, Sr, S, Mg) elements were observed with increasing age, irrespective of sex.
  • Lead (Pb) and Potassium (K) concentrations in molar and premolar dentine showed the strongest correlation with age.

Conclusions:

  • Trace element analysis in dentine, particularly Pb and K in molars/premolars, shows promise for age estimation in forensic odontology.
  • Combined with other techniques, dentine trace element analysis can enhance age determination in forensic investigations.
  • This study provides a foundation for utilizing dentine's elemental composition in legal identification and age assessment.