Anodised zirconium as material for permanent implants: in vitro and in vivo study

ANDREA GÓMEZ SÁNCHEZ; JOSEFINA BALLARRE; GUSTAVO DUFFÓ; JUAN CARLOS ORELLANO; SILVIA M. CERÉ

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE

SPRINGER

Lugar: Berlin; Año: 2012

0957-4530

The electrochemical behaviour of zirconium anodised at potentials between 3 and 30 V in 1 mol/L H3PO4 in simulated body fluid solution (SBF) was studied in order to evaluate the effect of the surface oxide film thickness and structure on the corrosion resistance in vitro. In vitro immersion tests and electrochemical assays after 30 days of immersion were also performed. Additionally in vivo bone formation was evaluated in Wistar rats, where as-received and 30 V anodised surfaces were compared. The results evidence that anodised zirconium presents higher corrosion resistance in SBF solution both after 24 h and 30 days of immersion in SBF, as long as the bone formation capability is conserved, comparing with the as-received condition.