INTEMA 05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
artículos
Título:
Surface modification of zirconium by anodisation as material for permanent implants: in vitro and in vivo study.
Autor/es:
A. GOMEZ SANCHEZ; J. BALARRE; J.C. ORELLANO; DUFFO, GUSTAVO; S. CERE
Revista:
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2012
ISSN:
0957-4530
Resumen:
The potential use of anodised zirconium aspermanent implant has been investigated. Zirconium wasanodised at constant potential between 3 and 30 V inH3PO4. Electrochemical assays were conducted in simulatedbody fluid solution (SBF) in order to evaluate theeffect of the surface oxide on the corrosion resistance invitro after 30 days of immersion. The rupture potentialincreases when increasing thickness of the anodic surfacefilm. The increase in the barrier effect when increasinganodising potential is also verified by EIS. Anodisation inH3PO4 proved to increase the apatite formation capabilityof zirconium in a single step. In vivo bone formation wasalso analysed by implanting the modified materials inWistar rats. Anodised Zr presents higher corrosion resistancein SBF in all the studied immersion times whencompared with non anodised Zr. Additionally, in vivoexperiments evidence bone generation and growth incontact with zirconium implants both in the as-receivedand anodised condition.
