3 research outputs found
Effect of fluoride sodium mouthwash solutions on cpTI: evaluation of physicochemical properties
The Photoactivity and Electrochemical Behavior of Porous Titania (TiO2) in Simulated Saliva for Dental Implant Application
Influence of noble metals alloying additions on the corrosion behaviour of titanium in a fluoride-containing environment
Titanium alloys exhibit excellent corrosion resistance in most aqueous media due to the formation of a stable oxide film, and some of these alloys (particularly Ti-6Al-7Nb) have been chosen for surgical and odontological implants for their resistance and biocompatibility. Treatment with fluorides (F-) is known to be the main method for preventing plaque formation and dental caries. Toothpastes, mouthwashes, and prophylactic gels can contain from 200 to 20,000 ppm F- and can affect the corrosion behaviour of titanium alloy devices present in the oral cavity. In this work, the electrochemical corrosion behaviour of Ti-1M alloys (M = Ag, Au, Pd, Pt) was assessed in artificial saliva of pH = 3.0 containing 910 ppm F- (0.05 M NaF) through open circuit potential, E-OC, and electrochemical impedance spectroscopy (EIS) measurements. The corrosion behaviour of the Ti-6Al-7Nb commercial alloy was also evaluated for comparison