Characterization and quantification of oxides generated by anodization on titanium for implantation purposes

ALOIA GAMES, LUCAS; PASTORE, JUAN IGNACIO; BOUCHET, AGUSTINA; BALLARRE, JOSEFINA

Mar del Plata

Congreso; XVIII Congreso Argentino de Bioingeniería (SABI 2011); 2011

Regional Mar del Plata de la Sociedad Argentina de Bioingeniería y la Facultad de Ingeniería de la Universidad Nacional de Mar del Plata

The use of titanium as implant material is widely known in the surgery field. The formation of natural or artificial compact and protective oxide is a convenient tool for metal protection and a good way to generate phosphate deposits to enhance biocompatibility and bone fixation with the existing tissue. The present work has the aim of superficially modify commercially pure titanium sheets used in orthopedics and odontology, with a potencistatic anodization process with an ammonium phosphate and ammonium fluoride solution as electrolyte. The objective is to generate titanium oxides doped with phosphorous on the surface, to promote bioactivity. The characterization and quantification of the generated deposits is presented as a starting point for the future application of these materials. The applied characterization methods are X ray diffraction, micro-Raman spectroscopy analysis for evaluating the chemical and phase composition on the modified surface and PDI image analysis techniques that allow the segmentation of SEM images and the measurement and quantification of the oxides generated by the anodization process. The samples with polished treated surface at 30V have the deposit of a phosphate rich thick layer covering almost all the surface and spherical-shaped titanium oxide crystals randomly placed (covering more than 20% of the surface area).