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| Author(s): |
Carolina da Silva Machado Martinelli
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São José dos Campos. 2016-04-05. |
| Institution: | Universidade Estadual Paulista (Unesp). Instituto de Ciência e Tecnologia. São José dos Campos |
| Defense date: | 2016-02-05 |
| Advisor: | Estevão Tomomitsu Kimpara; Ana Paula Rosifini Alves Claro |
| Abstract | |
In Dentistry, the Co-Cr alloys are general used for oral rehabilitation by dental prosthesis. The oral rehabilitation procedures by osseointegrated implants point out to new metal alloys’ biomechanical and structural necessities. The aim of this study was develop and characterize three experimental Co-Cr-Mo alloys, for dental application. Three alloys will be made out with different Mo’s percentages by two processing techniques: L2, casting by addition of Mo to a certified commercial Co-Cr alloy (American Society for Testing and Materials, 1996) (L1); and L3, casting of purified commercial metals (Co, Cr, Mo). The experimental alloys were characterized by microstructure by digital optical microscopy, scanning electron microscopy, energy dispersive X-ray spectrometry, X-ray diffraction and X-ray fluorescence; and mechanically by microhardness and corrosion resistance. Human dermal fibroblasts were used to evaluate the biocompatibility of experimental Co-Cr alloys after 1, 4 and 7 days of culture. Cellular adhesion, proliferation, viability, cytoskeletal organization and morphology were investigated using fluorescence microscope, biochemical assay and SEM. Based on data was possible to concluded that experimental alloys (L2A, L2B, L2C, L3A, L3B e L3C) shown higher performance for microstructure, mechanical and cytotoxic as L1 and they are recommend to biomedical and dentistry applications. (AU) | |
| FAPESP's process: | 13/12437-4 - Development and characterization an a experimental CoCr alloy |
| Grantee: | Carolina da Silva Machado Martinelli |
| Support Opportunities: | Scholarships in Brazil - Doctorate |