2026-06-08T11:05:02Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1204722025-10-31T09:32:16Zcom_20.500.14352_14col_20.500.14352_16

Daavari, Morteza Atapour, Masoud Mohedano Sánchez, Marta Matykina, Endzhe Arrabal Durán, Raúl Nesic, Dobrila 2025-05-26T11:46:18Z 2025-05-26T11:46:18Z 2023-09-16 10.3390/jfb14090475 https://hdl.handle.net/20.500.14352/120472 https://www.mdpi.com/2079-4983/14/9/475#:~:text=To%20regulate%20the%20degradation%20rate%20and%20improve%20the,included%20a%20polycaprolactone%20top%20layer%20%28PEO%20%2B%20CNT%2FPCL%29. To regulate the degradation rate and improve the surface biocompatibility of the AZ31B magnesium alloy, three different coating systems were produced via plasma electrolytic oxidation (PEO): simple PEO, PEO incorporating multi-walled carbon nanotubes (PEO + CNT), and a duplex coating that included a polycaprolactone top layer (PEO + CNT/PCL). Surfaces were characterized by chemical content, roughness, topography, and wettability. Biological properties analysis included cell metabolism and adhesion. PEO ± CNT resulted in an augmented surface roughness compared with the base material (BM), while PCL deposition produced the smoothest surface. All surfaces had a contact angle below 90°. The exposure of gFib-TERT and bmMSC to culture media collected after 3 or 24 h did not affect their metabolism. A decrease in metabolic activity of 9% and 14% for bmMSC and of 14% and 29% for gFib-TERT was observed after 3 and 7 days, respectively. All cells died after 7 days of exposure to BM and after 15 days of exposure to coated surfaces. Saos-2 and gFib-TERT adhered poorly to BM, in contrast to bmMSC. All cells on PEO anchored into the pores with filopodia, exhibited tiny adhesion protrusions on PEO + CNT, and presented a web-like spreading with lamellipodia on PEO + CNT/PCL. The smooth and homogenous surface of the duplex PEO + CNT/PCL coating decreased magnesium corrosion and led to better biological functionality. eng open access Data: Biological Performance of Duplex PEO + CNT/PCL Coating on AZ31B Mg Alloy for Orthopedic and Dental Applications dataset