METHOD FOR SURFACE MODIFICATION OF IMPLANT CAPABLE OF INCREASING THE CONTACT AREA AND FORMING AN OXIDIZED COATING LAYER FORMED OF TIO2

摘要

PURPOSE: A method for surface modification of an implant formed of titanium or titanium alloys is provided to increase the contact area with osseous tissue and to form an oxidized coating layer formed of TiO2 present in a mixed phase of anatase with rutile on the surface of the implant. CONSTITUTION: The method comprises the steps of: rotating an implant; spraying sand microparticles to the surface of the implant by using a blasting gun; standing the blasted implant in a space having a certain oxygen volume flow and increasing the temperature of the implant in a constant heating rate to perform heating oxidation treatment so that an oxidized layer is formed on the surface of the implant; and evaluating wettability of the implant by measuring the contact angle between the surface of the implant and water, evaluating cytotoxicity of the implant and judging bioavailability of the implant.