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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:32 |
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Conference: Bucharest University Faculty of Physics 2013 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Trace element distribution in human teeth by x-ray fluorescence and multivariate analysis (II)
Authors:
Cristiana Oprea, Pavel J. Szalanski, Marina V. Gustova, Ioan A. Oprea, Violeta Buzguta
Affiliation:
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, Romania
E-mail
coprea2005@yahoo.co.uk
Keywords:
human teeth, XRFS, elemental concentration, multivariate analysis, factor analysis
Abstract:
X-ray fluorescence spectrometry (XRFS) was used as a multielement method of evaluation of individual whole human tooth or tooth tissues for their amounts of trace elements. Measurements were carried out on human enamel, dentine, and dental cementum, and some differences in tooth matrix composition were noted. In addition, the elemental concentrations determined in teeth from subjects of different ages, nutritional states, professions and gender, living under various environmental conditions and dietary habits, were included in a comparison by multivariate statistical analysis (MVSA) methods. By factor analysis it was established that inorganic components of human teeth varied consistently with their source in the tissue, with more in such tissue from females than in that from males, and more in tooth incisor than in tooth molar. The statistical analyses performed seem to indicate that deciduous teeth might be a suitable indicator of environmental exposure to several trace elements. The results demonstrated that XRFS supplemented by MVSA is a useful and practical approach for the investigation of trace heavy metal incorporation and distribution on the surface of teeth as well as in inner layers.
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