[Energy dispersive X-ray analysis of human deciduous teeth dentin]

Human deciduous molars were ground and polished in order to be examined by an analytical electron microscopy. An energy dispersive X-ray analysis system attached with a scanning electron microscope was used to analyze the teeth dentin both qualitatively and quantitatively. Calcium and phosphorus and also magnesium could be detected in the intertubular dentin of their teeth. The calcium content of the interglobular dentin was lower than those of the other part of dentin. The magnesium content was almost 4% (atomic %). The magnesium content in the dentin was higher than those in the enamel and cementum of the same specimen. It was suggested that some magnesium was contained in the dentin crystal structure.