Correlated microradiography, X-ray microbeam diffraction and electron probe microanalysis of calcifications in an odontoma

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Abstract
Using microradiography, X-ray microbeam diffraction and electron probe microanalysis, a correlated morphologic and crystallographic study was performed on dysplastic enamel in a compound odontoma. The tumor was found in the lateral incisor-canine region of the left mandible of a 36 yr old woman. A conspicuous feature was the presence of hypomineralized areas, which were situated in the proximity of enamel surface and distinctly demarcated from the adjacent enamel. X-ray microbeam diffraction and electron probe microanalysis showed that these lesions have a lower crystallinity and a higher concentration of Mg as compared with the adjacent enamel. Calcified structures within the fissure or on the enamel surface, which include lacunae of varying size and resemble a form of coronal cementum, and spherical calcifications, which may be an epithelial product, were found.

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