Laser polished fused deposition poly-lactic acid objects for personalized orthopaedic application

Autor: Yuan Chai, Xiao-Bo Chen, Donghai Zhang, Joseph Lynch, Nick Birbilis, Qing-Hua Qin, Paul N. Smith, Rachel W. Li
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: SN Applied Sciences, Vol 2, Iss 11, Pp 1-10 (2020)
Druh dokumentu: article
ISSN: 2523-3963
2523-3971
DOI: 10.1007/s42452-020-03637-7
Popis: Abstract Patient-specific surgical guides are increasingly demanded. Material Extrusion (ME) is a popular 3D printing technique to fabricate personalized surgical guides. However, the ME process usually generates deleterious surface topography which is not suitable for orthopaedic emergencies. We designed and optimized parametric combinations of a laser polishing approach as post process to improve the surface quality of ME-made poly-lactic acid (PLA) objects. In this study, we investigated the contribution of processing variables to the mechanical properties and the biocompatibilities in vitro of the ME-made PLA objects. Conventional surface grinding was conducted as comparison. The results demonstrate that the ME-made PLA samples exhibit good mechanical properties and favourable biocompatibility after being post processed using laser polishing. The post laser polishing, as a powerful tool in manufacture of ME-made PLA objects, will open a new approach with a great promise in its applications in personalized and timely management of medical emergencies.
Databáze: Directory of Open Access Journals
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