%0 journal article %@ 0167-577X %A Morquecho-Marin, D., Silva-Bermudez, P., Millan-Ramos, B., Victoria-Hernandez, J., Letzig, D., Ramirez-Ortega, D., Depablos-Rivera, O., Garcia-Lopez, J., Barrera-Ortega, C., Rodil, S. %D 2020 %J Materials Letters %P 128236 %R doi:10.1016/j.matlet.2020.128236 %T Unexpected cytotoxicity of TiO2-coated magnesium alloys %U https://doi.org/10.1016/j.matlet.2020.128236 %X Biodegradable Mg-based alloys have attracted increasing attention from orthopedic surgeons and biomaterials scientists since their Young’s modulus is close to that of bone. However, control of the degradation rate is still a challenge. Sputtered TiO2 coatings were deposited on Mg-Zn-Ca alloys aiming to reduce the initial strong reactivity of Mg with biological fluids. However, the degradation tests indicated that the coated samples induced a larger variation in the pH, greater H2 production and formation of degradation products in comparison to the bare alloys. Consequently, an enhanced cytotoxicity of the coated samples was observed.