Title
Nanostructure of Crystal Hydroxyapatite from Fluorosis Affected Enamel: Study of Dental Sciences Base,Used
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Currently, there is little information available to describe the nanostructure of crystal hydroxyapatite, which contributes to influencing the macro characteristics of fluorosisaffected enamel. This research using Scanning Electron Microscopy/ Energy Disperse XRay (SEM/ EDX)and Powder Xray Diffraction (XRD). The results of this study have demonstrated Fluor concentration were higher in fluorosis enamel and the surface increasingly roughness and porous. The aaxis on fluorosisaffected enamel 9.3786 ?, and the caxis 6.8836 ?. The aaxis on normal enamel 9.4148 ?, and the caxis 6.8791?. The grain size of fluorosisaffected enamel 19.59 nm and normal enamel 20.30 nm. The microstrain of fluorosisaffected enamel 31.54% and normal enamel was 20%. This study concluded that Fluor, as a mostly electronegative element, decreases the crystallinity and improves the microstrain of hydroxyapatite. These conditions will influence the strength and stability of fluorosisaffected enamel.
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