Creation and description of sand blasted stamp created micro roughness on polyetheretherketone with subsequent physical vapor deposition coating for promotion of osseointegration

Abstract

AbstractAdjusting the topography of implant surfaces on a micro‐scale allows improvement of osseointegration. Titanium surface modification like sand blasting is one of the known methods to alter the topography of the surface. Polyetheretherketone as a biomaterial is a suitable alternative to titanium but exhibits an inert surface character. The aim of this study was to combine the positive bulk properties of polyetheretherketone with the positive surface properties of sand blasted titanium. For the creation of particle free structured polyetheretherketone surface, four different sand blasted die were pressed on counter die polyetheretherketone to transfer the structure. Furthermore, a titanium layer was applied on the surface using physical vapor deposition. The transfer process of the four different topographies was investigated with roughness measurements and scanning electron microscope. One topography, created with aluminum oxide particles on copper, was found with the required Ra value of 1 μm and Rz value of 9.2 μm for improved osseointegration.