Development of Hydroxyapatite-Titania Composite for Implant Application

Abstract

Hydroxyapatite is one of the defined bioactive materials. It is a potential candidate ceramic for bone and dental implants since it owns a superior biocompatibility. Due to its brittleness and poor mechanical strength, application of HAp is limited at load bearing site. Various routes have been investigated for improving the mechanical properties of hydroxyapatite. Recent studies show various HAp composites were fabricated to improve mechanical strength. Titanium dioxide has very good biocompatibility. Titanium dioxide also promotes cell growth and proliferation. Titanium dioxide is added in different weight percentages i.e. 5%, 10%, 15% in to HAp. Samples were sintered for different time at 800oC. Developed composite were further characterized for morphology, phase, functional group analysis and compressive strength. It was found that HAp- Titania composite containing 10% Titania has better compressive strength 59.8 MPa with 20-40% porosity than any other developed composite of selected composition