2017 Volume 26 Issue 1 Pages 103-107
Applying a laboratory used X-ray micro-diffraction technique to analysis of human bone mineral, the variation of crystallite size in a small bone mass was clarified. The mandible cortical small masses were taken off by a bone trephine bar. The micro-XRD patterns showed the broaden peaks, but the full-width at half maximum (FWHM) of the 002 diffraction peak could be obtained. There were three characteristics on the FWHM values obtained in this study. First, the values showed a wide deviation range from 0.44 to 0.66 (2θ°), indicating the crystallite length of 12.4 nm to 18.5 nm. Second, such a small FWHM value, 0.44, was not reported previously. And third, the variation of FWHM value was observed in the closely neighboring regions within one small bone mass separated within 1 mm only. These results suggested that the crystallites in bone may vary in size from to parts due to bone remodeling and histological textures.
