ABSTRACT
Traditional surface treatments on bioinert materials focus on the enhancement of surface bioactivity or the prevention of the toxic metallic ion release from the matrix, which would benefit subsequent cell adhesion, cell proliferation, and cell differentiation. The surface treatments on traditional biomedical materials often contain a process to improve the bioactivity of the surface. Common surface treatments on biodegradable Magnesium (Mg) alloys can be summarized with three specific aspects, including mechanical surface treatment, physical surface treatment, and chemical surface treatment. Mechanical surface treatment often serves as pretreatment for subsequent treatment, but it can also be an independent treatment of the material industry for its effectiveness and cheapness. Mechanical surface treatment is generally utilized to achieve desired surface morphology and, thus, desired surface properties. The physical surface treatment of biodegradable Mg alloys includes plasma surface treatment and laser surface treatment. Moderate surface roughness possessed a better property of cell adhesion.
