Effect of magnetic field on biomimetic coating of hydroxyapatite on titanium

Hydroxyapatite (HA) coating for orthopedic and dental implants does accelerates the bone apposition period. A simple and well adherent coating is possible using biomimetic process, which mimic natural process of HA precipitation in body fluid. Efforts were made to accelerate the coating process duration by increasing the concentration of ions of simulated body fluids. Magnetic therapy has been proven to accelerate the recuperation of patients from fracture and orthopedic ailments. The concept has been applied to biomimetic coating and studied the influence of magnetic field on coating characteristics. Commercially pure titanium of 200 microns thick samples of dimensions 10 × 20 was surface treated by sodium hydroxide treatment (10M NaOH aqueous solution at 80°C for 24 hrs). The samples where immersed in 5 × SBF solution for two weeks. Normal HA coating were compared with the HA coating under permanent magnetic field. The X-ray diffraction (XRD) and Fourier transformed infrared spectroscopy has characterized HA. Scanning electron microscopy (SEM) has shown better dense and finer coating in case of HA coating under magnetic field than normal HA coating.