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

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.

KEYWORDS:

• Fluoride
• surface roughness
• hydrophilicity
• anodised films
• two-step Anodisation

Acknowledgments

The authors would like to thank Assist. Prof. Dr. Sireerat Lisnund, Assist. Prof. Dr. Nampueng Pangpaiboon, Miss Patimaporn Tupundung and Miss Saowanee Khumyod for helping us.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This research project is supported by Rajamangala University of Technology Isan under [Contract No. NKR2561REV019 and NKR2562REV070].