Strontium and Zinc doped hydroxyapatite coating on stainless steel mini-implants used in maxillofacial surgery: An in-vitro study

Abstract

Aims: This study aims to achieve an electrochemical deposition of Sr- and Zn-doped hydroxyapatite coating on stainless steel mini-implants and verify it by Fourier transform infrared spectroscopy (FTIR).  Materials and methods: Synthesis of the powder: Zinc-Sr hydroxyapatite nanoparticles were synthesised in this work using a sonochemical-mediated hydrothermal technique. Electrochemical deposition of the coating: The coating was applied electrochemically onto commercially available stainless steel miniplates measuring 2 mm in thickness and screws measuring 2 x 8 mm. The coated implants were analysed for their functional groups using Fourier transform infrared spectroscopy (FTIR) covering a frequency range of 4000–400 cm-1. Results: The chemical nature and functional groups involved in the successful production of Zn-Sr/HAP were predominantly elucidated by FT-IR spectroscopy investigations. In FTIR, the coated stainless-steel plates showed 3 peaks at 1024.85, 601.02, and 561.26. The coated stainless-steel screws showed 2 peaks at 1028.43 and 563.23. Conclusion: Zinc and strontium-doped hydroxyapatite coating can be done on stainless steel miniplates using electrochemical deposition.