Hydroxyapatite/ Porous silica coating on Cp-Ti substrates for treating dental implant infections

• Author Details:   
• Medha Ranjan
• Pratibha Ramani ^*
• Suvarna Kizhakkoottu
• Kalaiyarasan Madhu

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Aim: Modifications to the surface coatings of titanium implants for improving properties like bio-corrosion resistance and anti-bacterial activity are the new area of interest among researchers. This in-vitro study, aimed to evaluate biomechanical and anti-bacterial properties of the titanium surface coated with Hydroxyapatite/porous silica using the wet chemical process.
Materials and Methods: In the present study, electrophoretic deposition of a combination of porous silica with hydroxyapatite crystals on the surface of a titanium implant was carried out. The biomechanical properties of the coating were measured using scanning electron micrography(SEM), Fourier-transform infrared (FT-IR), biocorrosion and anti-bacterial activity analysis.
Results: In the present work, electrophoretic deposition of silica with hydroxyapatite-coated titanium has a potential of 30 V. The porous structure is observed by the surface topography analysis. The presence of the functional group verified the FT-IR spectra. The biocorrosion of coated samples was evaluated by SBF solution at the corrosion rate of 0.089 mm/year. The antibacterial activity evaluation of the coated sample prevents the growth of bacteria of S.aureus and E.coli respectively.
Conclusion: This study investigates the electrophoretic deposition of a silica-hydroxyapatite coating on titanium implants for dental infection treatment. The porous coating, confirmed by FT-IR, showed low corrosion and strong antibacterial properties, enhancing cellular adhesion and reducing infection risk, making it suitable for clinical use.

Keywords: Titanium implant, Dental, Silica-HAP, Electrophoretic deposition