Imperial College London

DrSusanHodgson

Faculty of MedicineSchool of Public Health

Honorary Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 2789susan.hodgson Website

 
 
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Location

 

526Norfolk PlaceSt Mary's Campus

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Summary

 

Publications

Citation

BibTex format

@article{Shepherd:2012:10.1016/j.scitotenv.2012.03.022,
author = {Shepherd, TJ and Dirks, W and Manmee, C and Hodgson, S and Banks, DA and Averley, P and Pless-Mulloli, T},
doi = {10.1016/j.scitotenv.2012.03.022},
journal = {Science of the Total Environment},
pages = {214--222},
title = {Reconstructing the life-time lead exposure in children using dentine in deciduous teeth},
url = {http://dx.doi.org/10.1016/j.scitotenv.2012.03.022},
volume = {425},
year = {2012}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Data are presented to demonstrate that the circumpulpal dentine of deciduous teeth can be used to reconstruct a detailed record of childhood exposure to lead. By combining high spatial resolution laser ablation ICP-MS with dental histology, information was acquired on the concentration of lead in dentine from in utero to several years after birth, using a true time template of dentine growth. Time corrected lead analyses for pairs of deciduous molars confirmed that between-tooth variation for the same child was negligible and that meaningful exposure histories can be obtained from a single, multi-point ablation transect on longitudinal sections of individual teeth. For a laser beam of 100 μm diameter, the lead signal for each ablation point represented a time span of 42 days. Simultaneous analyses for Sr, Zn and Mg suggest that the incorporation of Pb into dentine (carbonated apatite) is most likely controlled by nanocrystal growth mechanisms. The study also highlights the importance of discriminating between primary and secondary dentine and the dangers of translating lead analyses into blood lead estimates without determining the age or duration of dentine sampled. Further work is in progress to validate deciduous teeth as blood lead biomarkers.
AU - Shepherd,TJ
AU - Dirks,W
AU - Manmee,C
AU - Hodgson,S
AU - Banks,DA
AU - Averley,P
AU - Pless-Mulloli,T
DO - 10.1016/j.scitotenv.2012.03.022
EP - 222
PY - 2012///
SN - 0048-9697
SP - 214
TI - Reconstructing the life-time lead exposure in children using dentine in deciduous teeth
T2 - Science of the Total Environment
UR - http://dx.doi.org/10.1016/j.scitotenv.2012.03.022
UR - http://hdl.handle.net/10044/1/30373
VL - 425
ER -