PLATINUM –COATED TITANIUM NANOTUBES -ENHANCING THE CORROSION RESISTANCE 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.