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

M. P. Binitha, P. P. Pradyumnan

Department of Physics, University of Calicut, Kerala, India..

DOI: 10.4236/jbnb.2013.42016                

Abstract

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

Keywords

Bone Grafts; Brushite; Gel Growth; Dielectric Properties; AC Conductivity

Conflicts of Interest

The authors declare no conflicts of interest.

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