PEEK Physical Surface Modification: Evaluation Of Particles Leaching Process

Abstract

Polyetheretherketone (PEEK) has been prominent in orthopedic implants; however, it is inert, preventing interaction between the implant and adjacent bone tissues. One way to overcome this characteristic is physical modification its on surface by particle leaching promoting greater osseointegration. The objective of this research was to develop and characterize the PEEK using a surface modification technique via particle leaching. For of the samples, a layer deposition of NaCl was used on PEEK. This was subjected to the pressure of 850 kg/cm2 by 390ºC for 20 minutes. After cooling, were subjected to leaching process particles. The results indicated a porous surface exhibiting uniform and homogeneous morphology with defined pores interconected, to in the range of 140-373 µm, with an average diameter of 273 µm. These evidenced the considerable NaCl removal after the leaching process, with cavities from ideal sizes which promotes adequate cellular accommodation and distinct roughness, giving an overall possibility of being able to obtain a material more able to receive the cells while also possibly presenting cell viability. Although the compressive strength presented low values, it can still be suitable for applications in areas with a reduced modulus of elasticity.

Surface Modifications of High-Performance Polymer Polyetheretherketone (PEEK) to Improve Its Biological Performance in Dentistry

“…Common particles include NaCl salt, sucrose, etc., with NaCl as the most used particle. Leaching is executed by solving the particles in respective solvent, leaving behind a porous surface [227]. Torstrick et al demonstrated that pore dimensions can be tailored by adjusting the diameter of NaCl particles [228].…”

“…The mechanical properties of PEEK after NaCl leaching were, unfortunately, decreased. Biological characterization using fibroblast cell line resulted in 86% of cell viability [227]. Evans et al leached incorporated NaCl particles from PEEK, and the generated porous PEEK maintained 73.9% of its original strength, 73.4% of its elastic modulus, and 73.4% of its fatigue resistance.…”

Will Poly Ether Ether Ketone Outshine the Existing Dental Materials? - An Overview

“…The surface modifications lead to an alteration in the surface characteristics of the material. It improves the mechanical properties and hence improves biocompatibility as well 38 . This material was also modified and then used to make dental prostheses.…”