Dielectric Property Studies of Biologically Compatible Brushite Single Crystals Used as Bone Graft Substitute

Abstract

The electrical characterization of\rbone is essential for the better understanding of the role of electrical\rstimulation in bone remodeling. Calcium Hydrogen Phosphate Dihydrate or\rbrushite (CaHPO4 2H2O) has been used in bone substitution owing to their fast resorption\runder physiological condition. Brushite is a suitable matrix for\rosteoconductive bone grafts. In this work, Calcium Hydrogen Phosphate single\rcrystals have been grown by single diffusion gel growth technique. The powder XRD studies revealed\rthe monoclinic structure of the grown crystals. The vibrational analysis of the\rcrystals is done with FTIR spectroscopy and the major functional groups and\rtheir assigned vibrations are discussed. The frequency dependence of dielectric\rconstant and ac conductivity at different temperatures have been studied in detail. This study shows decrease in the\rdielectric constant with the increase in frequency and temperature. The variation\rof ac conductivity is found to be increasing with frequency and decreasing with\rtemperature.