CORROSION BEHAVIOR OF BIOACTIVATED TITANIUM DENTAL IMPLANT USING DIFFERENT CHEMICAL METHODS
الموضوعات :Mohammad Khodaei 1 , Ehsan Khoda Bande Dastjerdi 2 , Hamid Nazemi 3 , Alireza Valanezhad 4 , Ikuya Watanabe 5
1 - Islamic Azad University, Majlesi Branch
2 - Department of Materials Engineering, Shahreza Branch, Islamic Azad University, Isfahan, Iran
3 - Center for Advanced Engineering Research, Majlesi Branch, Islamic Azad University, Isfahan, Iran
4 - Department of Dental and Biomedical Materials Science, Nagasaki University, Nagasaki, Japan
5 - Department of Dental and Biomedical Materials Science, Nagasaki University, Nagasaki, Japan
الکلمات المفتاحية: polarization, Corrosion behavior, Surface Treatment, Titanium implant,
ملخص المقالة :
At the past, damaged tissue was removed from the body of patients. But now tissue regeneration using scaffolds and implants are used to repair the damaged tissue and organs. Besides of the mechanical properties of metallic biomaterials, they suffer from bioinertness. Using some surface treatment techniques, the bioactivity and also corrosion resistance of titanium implants could be improved. In this study the effect of H2O2 and alkali treatments on the corrosion behavior of titanium implant in the artificial saliva, surface morphology and phases formed on the surface, were investigated using electrochemical corrosion test, scanning electron microscopy (SEM) and thin film x-ray diffractometery (TF-XRD) respectively. Results indicated that on the surface of H2O2 and alkali treated titanium samples, fine particles of anatase and fine wire of rutile was formed respectively. The results indicated that the corrosion resistance of alkali treated titanium in the artificial saliva was higher than H2O2 treated titanium sample. The corrosion current density for untreated, H2O2 and alkali treated titanium samples were about 0.6×10-8, 5×10-8, 3×10-8 A/cm2respectively.
