Surface finish of additively manufactured metals: biofilm formation and cellular attachment

Paola Ginestra, Leonardo Riva, Elisabetta Ceretti, David Lobo, Sophie Mountcastle, Victor Villapun, Sophie Cox, Liam Grover, Moataz Attallah, Owen Addison, Duncan Shepherd, Mark Webber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

39 Downloads (Pure)

Abstract

Powder bed fusion techniques enable the production of customized and complex devices that meet the requirements of the end user and target application. The medical industry relies on these additive manufacturing technologies for the advantages that these methods offer to accurately fit the patients' needs. Besides the recent improvements, the production process of 3D printed bespoke implants still requires optimization to achieve the optimal properties that can mimic both the chemical and mechanical characteristics of the anatomical region of interest. In particular, the surface properties of an implant device are crucial to obtain a strong interface and connection with the physiological environment. The layer by layer manufacturing processes lead to the production of complex and high-performance substrates but always require surface treatments during post-processing to improve the implant interaction with the natural tissues and promote a shorter assimilation for the fast recovery and wellness of the patient. Although the surface finishing can be tailored to enhance cells adhesion, proliferation and differentiation in contact with a metal implant, the same surface properties can have a different outcome when dealing with bacteria. This work aims to provide a preliminary analysis on how different post-processing techniques have distinct effects on cells and bacteria colonization of 3D printed titanium implants. The goal of the paper is to highlight the importance of the identification of an optimized methodology for the surface treatment of Ti6Al4V samples produced by Selective Laser Melting (SLM) that improves the implant antimicrobial properties and promotes the osseointegration in a long-term period.

Original languageEnglish
Title of host publicationESAFORM 2021 - 24th International Conference on Material Forming
PublisherPoPuPS (University of LiFge Library)
ISBN (Electronic)9782870193020
DOIs
Publication statusPublished - 12 Apr 2021
Event24th International ESAFORM Conference on Material Forming, ESAFORM 2021 - Virtual, Online, Belgium
Duration: 14 Apr 202116 Apr 2021

Publication series

NameESAFORM 2021 - 24th International Conference on Material Forming

Conference

Conference24th International ESAFORM Conference on Material Forming, ESAFORM 2021
Country/TerritoryBelgium
CityVirtual, Online
Period14/04/2116/04/21

Bibliographical note

Funding Information:
The authors would like to acknowledge the grants EP/P02341X/1 (PREVENTION) and OPTIMIB for funding this

Keywords

  • Additive manufacturing
  • Finishing
  • Metals
  • Selective laser melting
  • Titanium

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint

Dive into the research topics of 'Surface finish of additively manufactured metals: biofilm formation and cellular attachment'. Together they form a unique fingerprint.

Cite this