Summary
Three primary teeth from familial and sporadic X-linked hypophosphatemic vitamin D-resistant rickets, one permanent tooth from regional odontodysplasia, and three sound permanent teeth were prepared for ground sections of 50 μm thickness. To estimate the crystallinity of globular dentin for each ground section, microbeam X-ray diffraction analysis and transmission electron microscopic examination were performed. The crystallinity of globular dentin in any of the teeth examined was higher than that of normal dentin, and the size of hydroxyapatite crystals within the globular dentin was larger than that at normal dentin. These results clearly indicate that the globular dentin generally develops larger crystals, probably due to the presence of unmineralized spaces around the crystal nuclei such as interglobular dentin, resulting in the high crystallinity of dentin.
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Abe, K., Masatomi, Y., Moriwaki, Y. et al. X-Ray diffraction analysis and transmission electron microscopic examination of globular dentin. Calcif Tissue Int 48, 190–195 (1991). https://doi.org/10.1007/BF02570554
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DOI: https://doi.org/10.1007/BF02570554