The Comparison of Corrosion Behavior and Biocompatibility of a Ti-7.5Mo-6Al-5.8Zr-2Sn Alloy and TMA Orthodontic Wire: In Vitro Study
محل انتشار: سومین کنفرانس بین المللی پژوهش در علوم و مهندسی
سال انتشار: 1396
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 647
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شناسه ملی سند علمی:
ICRSIE03_237
تاریخ نمایه سازی: 8 آذر 1396
چکیده مقاله:
Biomaterial corrosion in the oral environment is of crucial importance. The present study aimed to investigate the difference between the corrosion behavior of a Titanium base alloy and TMA arch wire. Three sample types were studied in this case, a bulk version of the Ti alloy, a wire that was made by wire cutting, and the TMA arch wire. The EDX and AAS analysis showed that Ti alloy composition was Ti-7.5Mo-6Al-5.8Zr-2Sn and it had (α+β) phase. EIS, PDP and OCP tests were conducted on the artificial saliva. The obtained results showed that the bulk sample has corroded more than TMA arch wire, but the wire-shaped sample had almost the same corrosion behavior and polarization resistance. MTT Assay biocompatibility tests for cytotoxicity at 1, 7 and 30 days and flow-cytometry using Annexin V for the geno-toxicity at 5 months using human fibroblasts (HGF-1) showed that the optical density ranged from 0.7 to 1.25 and more than 80 % of cells were survived. ICP analysis for fibroblast cells in exposure to the samples at 5 month only indicated that Al and Mo lie in the range of ppm and the amount was lower than the risk range for human body.
کلیدواژه ها:
نویسندگان
Reza Behmadi
M. Sc, Department of Metallurgical and Materials Engineering, Science and Research Branch, Islamic Azad University of Neyshabur,
Maryam Omidkhoda
Associate Professor, Department of Dentistry, Medical Sciences University of Mashhad,
Ali Davoodi.
Associate Professor, Department of Metallurgical and Materials Engineering, Ferdowsi University of Mashhad,