Feasibility of 3D printed Co-Cr alloy for dental prostheses applications
Anna Gabriella Camacho Presotto, Jairo Matozinho Cordeiro, João Gabriel Camacho Presotto, Elidiane Cipriano Rangel, Nilson Cristino da Cruz, Richard Landers, Valentim Adelino R. Barão, Marcelo Ferraz Mesquita
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Agradecimentos: This work was supported by São Paulo State Research Foundation (FAPESP), Brazil (grant #2016/23490-1) and by Coordination for the Improvement of Higher Education Personnel (CAPES), Brazil (finance code #001). The authors express their gratitude: to Paulo Pacheco and Paulo Inforçatti...
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Agradecimentos: This work was supported by São Paulo State Research Foundation (FAPESP), Brazil (grant #2016/23490-1) and by Coordination for the Improvement of Higher Education Personnel (CAPES), Brazil (finance code #001). The authors express their gratitude: to Paulo Pacheco and Paulo Inforçatti of Techno-How Engenharia Industrial e Comercio Ltd for their assistance and for supplying the SLM specimens; to Pedro Yoshito Noritomi and Henrique Takashi Idogava for support in the CAD development of SLM specimens; to Jorge Antonio Alcarde of Estetica Protese Dental Eireli for his support in specimen preparation; to Larissa Solano de Almeida, Luan Silva Soares, Lucas Araújo, and Gustavo Henrique de França for their support at the Laboratory of Technological Plasmas at Universidade Estadual Paulista (UNESP); to Mr. Marcos Blanco Cangiani and Mr. Adriano Martins from the University of Campinas for technical support; and to the Brazilian Nanotechnology National Laboratory (LNNano) at the Brazilian Center of Research in Energy and Materials (CNPEM) for use of the LSCM facility
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Abstract: The aim of this study was to characterize the surface, microstructural, mechanical, and electrochemical properties of Selective Laser Melting (SLM) 3D-printed Co-Cr alloy when compared with casting and Soft Metal Block (SMB) milling techniques for dental prostheses applications. Specimens...
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Abstract: The aim of this study was to characterize the surface, microstructural, mechanical, and electrochemical properties of Selective Laser Melting (SLM) 3D-printed Co-Cr alloy when compared with casting and Soft Metal Block (SMB) milling techniques for dental prostheses applications. Specimens with specific dimensions were fabricated by cast, SMB, and SLM technologies with their respective commercially available Co-Cr alloys. Several techniques were carried out to characterize the specimens in terms of surface morphology, chemical composition, microstructure, surface free energy, and mechanical properties. Metal-ceramic bond strength was evaluated with the 3-point bend test. Standard electrochemical tests were conducted in artificial saliva (pH of 6.5). Data were evaluated at a significance level of 5%. Similar microstructure patterns (gamma-phases and epsilon-phases), surface morphology, roughness, and surface free energy were observed among groups (p gt; 0.05, ANOVA). The elemental composition provided by energy-dispersive spectroscopy confirmed the manufacturer's information on the alloys used. SLM technology provided a fine-grained homogeneous and less porous microstructure. Xray photoelectron spectroscopy analysis suggested a thicker oxide film on SLM surfaces. Highest values of Vickers microhardness, flexural strength, elastic modulus, and metal-ceramic bond strength were found for the SLM group (p < 0.05, Tukey's HSD test). The SLM group displayed greater electrochemical stability, presenting higher polarization resistance (Rp(tot)), corrosion potential (E-corr), and pitting potential (E-pit) values (p < 0.05, Tukey's HSD test). SLM technology revealed feasible surface, microstructural, mechanical, and electrochemical properties and can be a promising option for the fabrication of dental prostheses
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FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2016/23490-1
COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
001
Fechado
Feasibility of 3D printed Co-Cr alloy for dental prostheses applications
Anna Gabriella Camacho Presotto, Jairo Matozinho Cordeiro, João Gabriel Camacho Presotto, Elidiane Cipriano Rangel, Nilson Cristino da Cruz, Richard Landers, Valentim Adelino R. Barão, Marcelo Ferraz Mesquita
Feasibility of 3D printed Co-Cr alloy for dental prostheses applications
Anna Gabriella Camacho Presotto, Jairo Matozinho Cordeiro, João Gabriel Camacho Presotto, Elidiane Cipriano Rangel, Nilson Cristino da Cruz, Richard Landers, Valentim Adelino R. Barão, Marcelo Ferraz Mesquita
Fontes
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Journal of alloys and compounds. An interdisciplinary journal of materials science and solid-state chemistry and physics Vol. 862 (May, 2021), n. art. 158171, p. 1-13 |