Effect of surface fluorination on the hydrophilicity of the anodised films for dental implant applications

Abstract

ABSTRACT Hydrophilicity is an important factor for dental implant applications. It can improve the implant surface-blood interaction resulting in improved implant osseointegration. The aim of this research was to investigate the effect of fluoride on the hydrophilicity of the anodised films. The anodised films were performed by two-step anodisation at low current density in mixing solution of 1M H3PO4 (20 ml) + 80% v/v C2H5OH (20 ml) with different NaF concentrations of 0.25, 0.5, 1, 2, 4 wt % (20 ml). The two-step anodisation using 2 mA/cm2 in 1M H3PO4 + 80% v/v C2H5OH + 4 wt % NaF could enhance hydrophilicity to the anodised films due to hydroxyl groups, surface roughness and the F−ions incorporated into the anodised films. Therefore, a high content of F−ions (4 wt % NaF) was shown to promote hydrophilicity of the anodised films.