  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.
