Comparative analysis of corrosion resistance between beta titanium and Ti-6Al-4V alloys: A systematic review |
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| Affiliation: | 1. School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;2. INL - International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal;3. School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;1. Mechanical Engineering Science Department, University of Johannesburg, Johannesburg, P.O. Box 524, South Africa;2. Department of Mechanical Engineering, University of Ilorin, Ilorin, P. M. B. 1515, Nigeria;3. Directorate, Pan African University for Life and Earth Sciences Institute (PAULESI), Ibadan 200132, Nigeria;4. Department of Materials and Metallurgical Engineering, University of Ilorin, Ilorin, P. M. B. 1515, Nigeria |
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| Abstract: | BackgroundThe knowledge of the electrochemical property (corrosion resistance) of beta titanium alloys compared to Ti-6Al-4 V for implants is relevant because of the potential cytotoxic effects that the released ions could cause to long-term health.ObjectivesThe objective of this systematic review was to seek information on the electrochemical properties (corrosion resistance) of beta titanium alloys compared to Ti-6Al-4 V since the awareness of the electrochemical behavior of the implant surface in the medium is essential for the best indication of the alloys or compositional changes, which may promote benefits to bone-implant interaction in all areas that this procedure is required.MethodsThe PubMed, LILACS, COCHRANE Library, and Science Direct databases were electronically searched for the terms: dental implants AND beta-titanium AND Ti-6Al-4 V AND electrochemical technics. The inclusion criteria were research articles that studied beta-titanium compared to Ti-6Al-4 V using electrochemical techniques in electrolytes of chemical composition similar to body fluid, published in English, between 2000 and 2020. Articles that did not compare the corrosion resistance of these alloys in electrolytes similar to body fluids were excluded.ResultsA total of 189 articles were restored and selected by title and/or abstract according to the inclusion and exclusion criteria, which resulted in 15 articles that were reduced to 8 after read in full. The studies in vitro evaluated the corrosion resistance in electrolytes Hank, Ringer, SBF, and 0.9 % NaCl, between beta titanium alloys, obtained by arc fusion or bars stock, and Ti-6Al-4 V, for dental or biomedical implants submitted to surface treatments by heat treatment, plasma electrolytic oxidation (PEO), alkaline treatment, and thermomechanical.ConclusionThe evaluated literature allowed to determine that 1) The oxides Nb2O 5, Ta2O 5, and ZrO2 have higher stability and protection quality than that of TiO2 modified by the oxides of Al and V; 2) A higher modulus of elasticity of the Ti-6Al-4 V alloy favors protection against corrosion by maintaining a thicker and more firmly adhered oxide layer; 3) The increase in the thickness of the Ti alloys superficial layer contributes to the improvement of the corrosion resistance. |
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| Keywords: | Dental implants Beta-titanium Ti-6Al-4V Corrosion Toxicity Body fluid |
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