The present study determined the organic and inorganic composition of human enamel and dentin. The instrumental neutron activation
analysis, inductively-coupled plasma spectrometer, thermogravimetric and differential thermal analysis and X-ray diffraction
analysis applied were and performed in the Nuclear Technology Development Centre (CDTN) and Elemental Analysis in the Department
of Chemistry of the Federal University of Pernambuco, Brazil. The coronal dentin and enamel were separated from dentin mechanically
(1) and by wear (2). The analyses were effective and led to the identification of the main elements present in enamel and
dentin: Ca, Na, Cl, Zn, P, Mg, N, C, H, O. There was no contamination of samples of enamel or dentin in either separation
technique; however, with separation technique 1, lower percentages of mainly Ca (7.25%) and O (15.16%) components were detected
in dentin compared with technique 2.