Study and characterization of bio-active glass coating composite with and without hydroxyapatite on titanium and SS316L to regenerate supporting bony growth to established better bonding and stability
Year: 2018
Type: conference-paper
Abstract: Over a period of time a number of biomaterials have been developed and are used for hard tissue and joint. Metal Biomaterials gained its importance in recent time for having advantageous mechanical properties, nontoxic behavior, and biocompatibility. But one of the main drawbacks of using metallic implants is that they are bio-inert and inside the body they become encapsulated by dense fibrous tissue. This impedes proper stress distribution at the implant bone interface, which can result in an interfacial failure and loosening of the implant and finally lead to crack or fracture in the adjacent bone. Bone cement (Poly Methyl Methacrylate) can be used to improve the implant fixation but it becomes brittle with time so it gets loosen from the surface as well as it has a poor solvent resistance. Calcium Phosphates, specially Hydroxy-Apatite [Ca 10 (Po 4 ) 6 (OH) 2 ] have been widely used as coating materials on metallic implants due to the bio-active nature. Plasma-spray technique, in particular, has been widely investigated by many researchers and has been proposed as a reasonable coating method. But during the plasma spraying process, high flame temperature is required which can lead to compositional changes and structural transformation of Hydroxy Apatite (HA). So, after this procedure the uniformity of physical and chemical properties as well as bio-activity of Hydroxy Apatite (HA) could be lost. In this study one bio glass composition was prepared by matching its thermal expansion coefficient nearer to thermal expansion coefficient of metallic substrate specially Titanium and SS-316L. The metallic substrate coated with this Bio glass with and without mixing with HA with a certain percentage. The coating adherence property was studied by 3-point bending moment and bioactivity studied by using Simulated Body fluid which showed very promising result. The coating was also characterized with analysis of DTA-TGA, Surface reflectance also Surface Roughness.
Authors: Tarak Das, Pratik Das, Piyali Basak
Institutions: Netaji Subhash Engineering College, Jadavpur University
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2892748856