The aim of the current research is to measure the level of Ca, P and F in the different zones of enamel of the permanent human canine teeth. 40 permanent human canine teeth with sound enamel were used for the research. The level of Ca, P and F was measured by the method of the comparative dispersion of double refraction. The different regions of the crown of human permanent canine teeth exhibited no significant differences in Calcium and Phosphorus level in the crystallites. The content of Fluoride in the crystallites is higher in the outer enamel layers of the permanent canine teeth in comparison to the middle and inner ones.
