Implant surface design for improved implant stability: A study on Ti6Al4V dense and cellular structures produced by Selective Laser Melting

Bartolomeu, F.; Costa, M.M.; Gomes, J.R.; Alves, N.; Silva, F.S.; Miranda, G.

http://hdl.handle.net/10400.8/8445

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Abstract(s)

Focusing on implant surface design, aiming to improve implant primary stability, SLM technology was explored to produce dense and cellular structured Ti6Al4V specimens. The SLM specimens and also a commercial casted/forged Ti6Al4V group, were sandblasted and acid-etched to obtain a moderate surface roughness topography, typically used in implant manufacturing. Ti6Al4V-bone interaction and tribological performance were assessed by performing sliding tests aiming to replicate in some extension the insertion of a hip implant. The results shown a 24 and 32% higher kinetic friction coefficient values when comparing the cellular structures with the conventional casted/forged Ti6Al4V. These friction results together with a high amount of adhered bone are promising evidences of a higher efficiency of Ti6Al4V cellular structures for enhancing implant stability.

Keywords

Ti6Al4V Selective laser melting Implant surface design Static and dynamic friction

URI

http://hdl.handle.net/10400.8/8445

Citation

F. Bartolomeu, M.M. Costa, J.R. Gomes, N. Alves, C.S. Abreu, F.S. Silva, G. Miranda, Implant surface design for improved implant stability – A study on Ti6Al4V dense and cellular structures produced by Selective Laser Melting, Tribology International, Volume 129, 2019, Pages 272-282, ISSN 0301-679X, https://doi.org/10.1016/j.triboint.2018.08.012