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In vitro study of changes in the surface of commercially pure titanium and titanium alloy Ti-6Al-4V subjected to different treatments

Grant number: 10/13971-6
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2011
Effective date (End): February 29, 2012
Field of knowledge:Health Sciences - Dentistry - Dental Materials
Principal researcher:Wirley Goncalves Assuncao
Grantee:Leonardo Perez Faverani
Home Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil


After the discovery of osseointegration, implantology has achieved great success in oral rehabilitation. The formation of an oxide layer in the surface of titanium implants promotes greater stability, which prevents the discharge of ions to the body, as occurs in cases of corrosion of the implant surface, as this process promotes greater roughness in the implants. Titanium is commonly used in dentistry in its pure form; however, different grades of titanium influence its malleability and toughness, since the purity of the titanium increases more malleable presents itself. Some systems employ a titanium alloy, most often constituted by titanium, aluminum and vanadium. Its main feature is to be more resistant mechanically, due to a thicker layer of oxides. The titanium surface when exposed to oral fluids and diet, especially acidic, can release ions and thereby alter its micro-architecture, which leads to a reduction in the predictability of success. This study aims to evaluate the in vitro changes on the surface of commercially pure titanium and titanium alloy grade 5 (Ti-6Al-4V), exposed to different substances commonly present in mouth, through roughness analysis, scanning electron microscopy (SEM) and EDS method. In this way, 108 discs of Ti will be used, being 54 made of commercially pure titanium, and 54 of titanium alloy grade 5 (Ti-6Al-4V). These discs will be divided into nine groups (n = 6), being a control group without treatment and the others will be submitted to immersion in 5 mL of soda Cola, carbamide peroxide16% and 35%, and Hydrogen Peroxide 35% , with or without the artificial saliva. Data will be analyzed to compare the Ticp and Ti alloy immersed in the substances to be tested and the control group. The statistical test to be used will depend on the distribution of these data relative to the curve of normality. The tests will be conducted with a significance level of 5%. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RAMALHO-FERREIRA, GABRIEL; FAVERANI, LEONARDO PEREZ; GROSSI-OLIVEIRA, GUSTAVO AUGUSTO; OKAMOTO, TETUO; OKAMOTO, ROBERTA. Alveolar bone dynamics in osteoporotic rats treated with raloxifene or alendronate: confocal microscopy analysis. Journal of Biomedical Optics, v. 20, n. 3 MAR 2015. Web of Science Citations: 5.
FAVERANI, LEONARDO P.; BARAO, VALENTIM A. R.; RAMALHO-FERREIRA, GABRIEL; FERREIRA, MAYARA B.; GARCIA-JUNIOR, IDELMO R.; ASSUNCAO, WIRLEY G. Effect of bleaching agents and soft drink on titanium surface topography. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS, v. 102, n. 1, p. 22-30, JAN 2014. Web of Science Citations: 10.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
FAVERANI, Leonardo Perez. Estudo in vitro das alterações na superfície do titânio comercialmente puro e da liga de titânio Ti -6Al-4V submetida a diferentes tratamentos. 2012. 79 f. Master's Dissertation - Universidade Estadual Paulista. Faculdade de Odontologia de Araçatuba. Araçatuba.

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