PLATINUM –COATED TITANIUM NANOTUBES -ENHANCING THE CORROSIONRESISTANCE AND BIOMINERALIZATION

Background:Titanium has long been the preferred material for oral rehabilitation due to its excellent mechanical properties and biocompatibility. However, despite its widespread clinical success, implant failures remain a significant concern, primarily due to peri-implant diseases. Studies indicate that over 56% of implants experience complications over time, highlighting the need for improved materials or treatment strategies. While surface modifications to enhance osseointegration by creating bioactive surfaces have shown promise, there remains a need to improve the antimicrobial properties of implant materials. This study explores a novel approach of coating platinum onto the titanium nanotube arrays leveraging its inherent antimicrobial properties, to enhance both biological performance and corrosion resistance. Materials and Methods:Titanium surfaces were anodized to fabricate platinum-doped TNA on titanium alloys, aimed at promoting bioactivity and improving osseointegration. Platinum, known for its antimicrobial and antioxidant properties, was sputtered onto the nanotubes to further support healing and reduce microbial colonization. Surface morphology was analyzed using scanning electron microscopy (SEM), and electrochemical tests were conducted to assess corrosion resistance. Biomineralization potential was evaluated by immersing the samples in Dulbecco's Modified Eagle Medium (DMEM) with fetal bovine serum (FBS) for seven days. ATR-IR spectroscopy was used to confirm the formation of biomimetic structures. Results:SEM images revealed uniformly aligned platinum-doped nanotubes with partial coverage by platinum nanospheres. Corrosion resistance tests demonstrated enhanced stability of the platinum-coated TNA. Immersion studies showed a flower-like biomimetic morphology resembling water lettuce, confirmed by ATR-IR spectroscopy to be formedby proteins and calcium phosphate molecules. Conclusion:In conclusion, platinum-coated titanium nanotube arrays (TNA) enhance antimicrobial properties and corrosion resistance, improving implant performance. This innovative approach offers potential for reduced microbial colonization and better osseointegration, providing a promising solution to reduce implant failures and improve long-term outcomes in oral rehabilitation. Further clinical research is needed.