Article
Influence of Femtosecond Laser Modification on Biomechanical and Biofunctional Behavior of Porous Titanium Substrates
Author/s | Beltrán, Ana M.
Giner García, Mercedes Rodríguez Carballo, Ángel Trueba Muñoz, Paloma Rodríguez-Albelo, Luisa Marleny Vázquez Gámez, María de los Ángeles Fortio Godinho, Vanda Cristina Alcudia Cruz, Ana Amado Paz, José Manuel López Santos, Carmen |
Department | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte Universidad de Sevilla. Departamento de Citología e Histología Normal y Patológica Universidad de Sevilla. Departamento de Medicina Universidad de Sevilla. Departamento de Química Orgánica y Farmacéutica Universidad de Sevilla. Departamento de Física Aplicada I |
Publication Date | 2022-04 |
Deposit Date | 2022-04-22 |
Published in |
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Awards | Premio Mensual Publicación Científica Destacada de la US. Escuela Politécnica Superior |
Abstract | Bone resorption and inadequate osseointegration are considered the main problems of titanium implants. In this investigation, the texture and surface roughness of porous titanium samples obtained by the space holder technique ... Bone resorption and inadequate osseointegration are considered the main problems of titanium implants. In this investigation, the texture and surface roughness of porous titanium samples obtained by the space holder technique were modified with a femtosecond Yb-doped fiber laser. Different percentages of porosity (30, 40, 50, and 60 vol.%) and particle range size (100–200 and 355–500 μm) were compared with fully-dense samples obtained by conventional powder metallurgy. After femtosecond laser treatment the formation of a rough surface with micro-columns and micro-holes occurred for all the studied substrates. The surface was covered by ripples over the micro-metric structures. This work evaluates both the influence of the macro-pores inherent to the spacer particles, as well as the micro-columns and the texture generated with the laser, on the wettability of the surface, the cell behavior (adhesion and proliferation of osteoblasts), micro-hardness (instrumented micro-indentation test, P–h curves) and scratch resistance. The titanium sample with 30 vol.% and a pore range size of 100–200 μm was the best candidate for the replacement of small damaged cortical bone tissues, based on its better biomechanical (stiffness and yield strength) and biofunctional balance (bone in-growth and in vitro osseointegration). |
Project ID. | PID2019-109371GB-100
PAIDI P20-00671 |
Citation | Beltrán, A.M., Giner García, M., Rodríguez Carballo, Á., Trueba Muñoz, P., Rodríguez-Albelo, L.M., Vázquez Gámez, M.d.l.Á.,...,López Santos, C. (2022). Influence of Femtosecond Laser Modification on Biomechanical and Biofunctional Behavior of Porous Titanium Substrates. Materials, 15 (9), 2969-. |
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