Artículos (Ingeniería del Diseño)

URI permanente para esta colecciónhttps://hdl.handle.net/11441/11347

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Examinando Artículos (Ingeniería del Diseño) por Autor "Arancibia-Castillo, Roberto"

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    Design, fabrication, and characterization of novel dental implants with porosity gradient obtained by Selective Laser Melting
    (Elsevier, 2025-03) Robau-Porrua, Amanda; González, Jesús E.; Arancibia-Castillo, Roberto; Picardo Pérez, Alberto; Araneda-Hernández, Eugenia; Torres Hernández, Yadir; Universidad de Sevilla. Departamento de Ingeniería del Diseño; Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte; Ministerio de Ciencia e Innovación (MICIN). España; European Commission. Fondo Social Europeo (FSO); Universidad de Sevilla. TEP992: Diseño e Ingeniería; Universidad de Sevilla. TEP123: Metalurgia e Ingeniería de los Materiales
    Porous dental implants represent a significant advancement in dentistry, offering improved osseointegration, reduced bone resorption and minimized stiffness to better interact with surrounding bone. This study focuses on the development of Ti6Al4V implants with immediate loading and controlled porosity (40 vol% and 600 µm pore size) to improve vascularization and bone ingrowth, which are crucial for successful integration and long-term performance. Dense implants, fully porous implants, and a hybrid design combining a porous surface with a dense core were fabricated using Selective Laser Melting, enhancing fatigue resistance under cyclic loads. Porosity was quantified, revealing 19 % through image analysis and 13 % via the Archimedes method. Finite Element Analysis demonstrated that porous implants improve stress distribution, facilitate load transfer to peri-implant trabecular bone, and achieve uniform stress and strain distributions between thread fillets, with values ranging from 1.1 MPa to 1.6 MPa for stress and 0.0002 to 0.0030 for strain, promoting bone growth. Comparisons with β-Ti alloy implants featuring a porous structure and dense core revealed reduced stress concentrations and a lower risk of fatigue failure. These findings highlight the potential of hybrid and β-Ti designs for personalized dental implants, balancing mechanical performance with biological compatibility to meet patient-specific needs.