Some observations on the trace element concentrations in human dental enamel |
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Authors: | D W Lane D F Peach |
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Institution: | (1) School of Engineering and Applied Science, Cranfield University, RMCS, Shrivenham, SN6 8LA Swindon, Wiltshire, UK |
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Abstract: | The concentration of trace elements has been measured for dental enamel from 86 healthy human teeth using particle-induced
X-ray emission (PIXE). The majority of the teeth (n = 70) were collected from dentists in the county of Oxfordshire in the United Kingdom, although a smaller group (n = 16) were collected from Cornwall. The elements K, Ca, Mn, Fe, Co, Ni, Cu, Zn, Sr, Pb, and Hg have been detected and statistically
analyzed by grouping according to sex, age, and geographical location. The concentrations of Fe and Cu were found to be lower
in the teeth from female donors (P < 5%) and are believed to result from the continued burden of blood loss during menstruation.
Strong positive correlations (P < 0.1%) were found between Ca, Co, Ni, and Zn for all groups; these elements were also found
to exhibit a negative correlation (P < 1%) with age for teeth from female donors. This is believed to be related to decalcification during the menopause. Pb was
found to exhibit a positive correlation (P < 5%) with age for both sexes, and is believed to substitute for Ca in the Ca hydroxy
apatite (HAP) within the dental enamel. |
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Keywords: | Trace elements dental enamel PIXE age sex Oxfordshire Cornwall |
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