Age and temperature related changes to the ultrastructure and composition of human bone mineral.

摘要: This X-ray diffraction (XRD) investigation of heat-treated human femoral bone showed that the main mineral phase both unheated and heated to 600 degrees C resembled a poorly crystalline form hydroxyapatite. The rod-shaped apatite crystals in persisted up 400 C. Recrystallization at approximately C, produced larger crystals, which either retained their original morphology or changed tabular equidimensional shapes. size specimens was dependent on temperature age. When above crystallinity increased, XRD pattern more closely Partial decomposition hydroxyapatite calcium oxide 1000 beta-tricalcium phosphate, alpha-tricalcium phosphate between 1200 1400 indicated deficient contained carbonate. relative peak intensities thermal products were related some extent age deceased person reflected compositional changes occur during aging. Because thermally induced composition ultrastructure influenced by individual, this proposed heat treatment tissue may offer an alternative way studying