Fatigue properties of a dental implant produced by electron beam melting ® (EBM)

Jamshidinia, Mahdi; Wang, L.; Tong, Wei; Ajlouni, Raed; Kovacevic, Radovan

doi:10.1016/j.jmatprotec.2015.07.013

Cited by 70 publications

(28 citation statements)

References 26 publications

(36 reference statements)

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“…Recently there has been some work aimed at studying the fatigue behavior of EBM and SLM meshes. However, these have been focused on commercially pure titanium or Ti-6Al-4V meshes [3,21,[51][52][53][54].…”

Section: The Mechanical Propertiesmentioning

confidence: 99%

Microstructure, defects and mechanical behavior of beta-type titanium porous structures manufactured by electron beam melting and selective laser melting

et al. 2016

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Section: The Mechanical Propertiesmentioning

confidence: 99%

Microstructure, defects and mechanical behavior of beta-type titanium porous structures manufactured by electron beam melting and selective laser melting

et al. 2016

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“…The loose sintering (compaction pressure is not applied) is the extreme case (maximum porosity) of the PM route [32][33][34]. However, an excessive porosity and/or deficient sinterability (quality of the necks) of titanium powder at low temperatures, may compromise the mechanical behavior [35][36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Compaction Pressure and Sintering Temperature on the Mechanical Properties of Porous Titanium for Biomedical Applications

Castillo

Muñoz

Trueba

et al. 2019

Metals

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In the present work, the use of porous titanium is proposed as a solution to the difference in stiffness between the implant and bone tissue, avoiding the bone resorption. Conventional powder metallurgical technique is an industrially established route for fabrication of this type of material. The results are discussed in terms of the influence of compaction pressure and sintering temperature on the porosity (volumetric fraction, size, and morphology) and the quality of the sintering necks. A very good agreement between the predicted values obtained using a simple 2D finite element model, the experimental uniaxial compression behavior, and the analytical model proposed by Nielsen, has been found for both the Young’s modulus and the yield strength. The porous samples obtained by the loose sintering technique and using temperatures between 1000 °C −1100 °C (about 40% of total porosity) are recommended for achieving a suitable biomechanical behavior for cortical bone partial replacement.

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“…Another pro is that 3D printers with production process in the powder bed allow for reusing the utilized powder and reduction in waste quantities that would arise during conventional fabrication methods such as Computerized Numerical Control (CNC) cutting. Numerous literature reports show successfully printed dental [ 6 , 7 , 8 , 9 ], craniofacial [ 10 , 11 , 12 ] and orthopedic implants [ 13 , 14 , 15 ] using selective laser melting (SLM) and electron beam melting (EBM) technologies. The SLM stands out because in enables fabrication of very fine structures with complex internal architectures and overhangs with precision and shape fidelity higher than the EBM [ 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Selective Laser Melting (SLM) Process Parameters on In-Vitro Cell Response

Wysocki

Idaszek

Zdunek

et al. 2018

IJMS

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The use of laser 3D printers is very perspective in the fabrication of solid and porous implants made of various polymers, metals, and its alloys. The Selective Laser Melting (SLM) process, in which consolidated powders are fully melted on each layer, gives the possibility of fabrication personalized implants based on the Computer Aid Design (CAD) model. During SLM fabrication on a 3D printer, depending on the system applied, there is a possibility for setting the amount of energy density (J/mm3) transferred to the consolidated powders, thus controlling its porosity, contact angle and roughness. In this study, we have controlled energy density in a range 8–45 J/mm3 delivered to titanium powder by setting various levels of laser power (25–45 W), exposure time (20–80 µs) and distance between exposure points (20–60 µm). The growing energy density within studied range increased from 63 to 90% and decreased from 31 to 13 µm samples density and Ra parameter, respectively. The surface energy 55–466 mN/m was achieved with contact angles in range 72–128° and 53–105° for water and formamide, respectively. The human mesenchymal stem cells (hMSCs) adhesion after 4 h decreased with increasing energy density delivered during processing within each parameter group. The differences in cells proliferation were clearly seen after a 7-day incubation. We have observed that proliferation was decreasing with increasing density of energy delivered to the samples. This phenomenon was explained by chemical composition of oxide layers affecting surface energy and internal stresses. We have noticed that TiO2, which is the main oxide of raw titanium powder, disintegrated during selective laser melting process and oxygen was transferred into metallic titanium. The typical for 3D printed parts post-processing methods such as chemical polishing in hydrofluoric (HF) or hydrofluoric/nitric (HF/HNO3) acid solutions and thermal treatments were used to restore surface chemistry of raw powders and improve surface.

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Fatigue properties of a dental implant produced by electron beam melting ® (EBM)

Cited by 70 publications

References 26 publications

Microstructure, defects and mechanical behavior of beta-type titanium porous structures manufactured by electron beam melting and selective laser melting

Microstructure, defects and mechanical behavior of beta-type titanium porous structures manufactured by electron beam melting and selective laser melting

Influence of the Compaction Pressure and Sintering Temperature on the Mechanical Properties of Porous Titanium for Biomedical Applications

The Influence of Selective Laser Melting (SLM) Process Parameters on In-Vitro Cell Response

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