Utilização do processo de recozimento para geração de revestimento bioativo em peças produzidas por manufatura aditiva

Abstract

Additive manufacturing using the Fused Filament Fabrication (FFF) process is a manufacturing method that has stood out from other production methods due to its ease and practicality of use, as well as its low manufacturing costs and the possibility of customization. As such, this method has great potential for manufacturing polymeric implants, as long as the material used is suitable. When manufacturing implants, an extremely important factor that must be considered, in addition to cost and practicality of production, is biocompatibility and osseointegration capacity. In this sense, the aim of this study was to use an annealing process, with the part submerged in ceramic particulate, to generate a bioinductive coating by adhering the particulate to the surface of the implant in order to promote biocompatibility and osseointegration when using calcium phosphate (𝐶𝑎3(𝑃𝑂4)2) or titanium dioxide (TiO2) particulates. The effects and significance of the annealing parameters and particle composition on the mechanical properties of the part were investigated by means of bending, impact and microhardness tests, as well as coating properties such as thickness, roughness, microhardness and hydrophilicity. Good particle adhesion was observed, with adequate thickness and roughness. Furthermore, the results showed that annealing led to an increase in flexural strength despite the low significance in the change in toughness.