Surface characterization and fatigue performance of a chemical-etched Ti-6Al-4V femoral stem for cementless hip arthroplasty

Oliveira, Bruno José Silva de; Campanelli, Leonardo Contri; Oliveira, Diego Pedreira de; Guerra, Ana Paula de Bribean; Bolfarini, Claudemiro

doi:10.1016/j.surfcoat.2016.05.011

Cited by 6 publications

(4 citation statements)

References 33 publications

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“…It is important to mention that these fatigue data were all obtained using exactly the same experimental conditions, such as axial loading, stress ratio R = 0.1 and frequency in the range of 5-20 Hz. Micro-arc oxidation 12 and chemical etching 3 produced modified layers with R z value smaller than the critical R z in the curve of Figure 5, and therefore the fatigue strength The boundary conditions and the methodology are published elsewhere 17 . The calculations show that values in the range of ~400 MPa to 650 MPa can be obtained in critical parts of the stem and would induce fatigue cracks before the limit of 5x10 6 cycles established by the biomedical standards for such components.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation

et al. 2019

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The effect of a surface treatment by Nd:YAG laser irradiation on the fatigue behavior of Ti-6Al-4V ELI was studied. Axial fatigue tests were performed to obtain S-N curves in polished and laser treated conditions. Roughness measurements and scanning electron microscopy were used to characterize the features of the modified surface. A reduction in the fatigue strength of around 35% was obtained after the laser treatment of the material surface. Although the surface roughness was in the micrometer scale, a notch effect was suggested to be the reason for the deleterious influence of the laser on the fatigue strength. The reduction in the fatigue strength obligatory demands redesign of implants for laser modified surfaces of Ti-6Al-4V alloy.

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Section: Discussionmentioning

confidence: 99%

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation

et al. 2019

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“…When directing in vivo study of osseointegration of coated and uncoated implants, one should consider into an account the reactivity of bone surrounding the implant.Namely, at the diaphysis (Figure 1c), native bone is in neighboring contact with an implant. The metaphysis(Figure 1c), on the other hand, it consists cancellous bone which is more reactive and hence it provides faster facture healing [57].…”

Section: Introductionmentioning

confidence: 99%

“…The residual 30% of enhancement in mineral content lasts numerous years, and is called secondary mineralization [60]. Epitaxial concerns have been found to be of primary significance in biomineralization, in apprehension the generation of teeth and bones, as well as in pathological ways such as the progress of urinary calculi [50][51][52][53][54][55][56][57][58][59]61].…”

Section: Introductionmentioning

confidence: 99%

Graphene Family-Calcium Phosphates for Bone Engineering and Their Biological Properties

Brahmayya,

VENKATESWARA RAO,

LIAO

et al. 2024

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Abstract. Graphene family (GF)-Calcium phosphate (CaP) composites, holds great potential as components of bone regeneration materials. GF nanomaterials can be modified physically as well as chemically, which are to be biomimetic, mechanically to be hard due to their capability to support exceptional mechanical, thermal and electronic properties. These biocompatible GF composites coated on the calcium phosphate can enhance and tolerate stem cell growth and differentiation, proliferation into various lineages or interact with bioorganisms. The development in CF-CaP materials and their physicochemical/biointeractions and strategies towards osteoblasts is a great concern to promote faster healing and reconstructions of large bone imperfections or defects. In this review, we explain the influence of the CF-CaP and summarize recent developments on designing CF-CaP architectures as multifunctional bone regeneration platforms. We have also explored the typical biological applications concerning these CF-CaP based bioactive nanocomposites. Furthermore, the future viewpoints and evolving challenges will also be emphasized. Due to the shortage of full-length reviews in this emerging research field, this review would be caught great attention and encourage various new chances across a wider range of disciplines.

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“…A biofuncionalidade é o conjunto de propriedades que permite ao material desempenhar uma função desejada, estando diretamente interligada a suas propriedades físicas; já a biocompatibilidade se refere à compatibilidade entre o material e o meio biológico no qual o mesmo será inserido, sendo as propriedades toxicológicas essenciais para que não ocorram reações adversas [3]. Próteses utilizadas na restauração de articulações, como as coxofemorais, por exemplo, exigem, além de resistência mecânica, baixa densidade, excelente resistência à corrosão, módulo de elasticidade relativamente baixo e biocompatibilidade, caracterizando seu desenvolvimento como extremamente complexo [4].…”

Section: Introductionunclassified

Avaliação da influência das condições de usinagem sobre o estado de superfície obtido no fresamento de ligas de titânio

et al. 2022

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RESUMO O atendimento a critérios de desempenho fisiológicos que conduzem à devida conexão estrutural e funcional entre osso e implante, denominada osseointegração, está intimamente relacionado às características superficiais do biomaterial, as quais dependem dos processos envolvidos em sua fabricação. Assim sendo, o presente trabalho visa ampliar o entendimento acerca da influência de condições de usinagem sobre a integridade superficial de componentes em titânio comercialmente puro grau 4 e Ti-6Al-4V ELI submetidos à operação de fresamento. Para tanto, a partir de um planejamento fatorial completo 23, foram selecionados como fatores de influência o tipo de ferramenta, a liga de titânio usinada e a velocidade de corte. Foram utilizadas como variáveis de resposta sobre o estado de superfície três parâmetros de rugosidade distintos, a saber: rugosidade média (Ra), assimetria (Rsk) e achatamento (Rku) do perfil. A análise de variância (ANOVA) indicou que a ferramenta corresponde ao principal fator de influência desse estudo, sendo significativa sobre todas as variáveis de resposta. A liga de titânio usinada também se mostrou influente sobre os resultados de rugosidade média, enquanto a velocidade de corte exibiu influência significativa tanto sobre a rugosidade média quanto sobre o parâmetro de assimetria. Justamente com relação ao skewness, destaca-se que as diferentes fresas empregadas produziram resultados consistentemente opostos, isto é: enquanto um modelo de ferramenta resultou em uma superfície com picos alargados e vales profundos, o outro modelo resultou em vales rasos e largos. Dessa forma, considera-se bastante provável que a utilização de ferramentas de geometria e materiais distintos venha afetar a resposta do biomaterial em termos de viabilidade celular.

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Surface characterization and fatigue performance of a chemical-etched Ti-6Al-4V femoral stem for cementless hip arthroplasty

Cited by 6 publications

References 33 publications

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation

Graphene Family-Calcium Phosphates for Bone Engineering and Their Biological Properties

Avaliação da influência das condições de usinagem sobre o estado de superfície obtido no fresamento de ligas de titânio

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