A 3D-Printed Ultra-Low Young’s Modulus β-Ti Alloy for Biomedical Applications

Pellizzari, M.; Jam, Alireza; Tschon, Matilde; Fini, Milena; Lora, Carlo; Benedetti, M.

doi:10.3390/ma13122792

Cited by 36 publications

(23 citation statements)

References 55 publications

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“…This is because the different scan strategies change the direction of the maximum thermal gradient. Similar work was conducted by Pellizzari et al [204] using such a method, and they obtained a metastable Ti-15Mo-3Al-3Nb alloy with a low modulus of 53 GPa. Ti-13Nb-13Zr is an early developed metastable β-type Ti alloy with low cost.…”

Section: Mechanical Propertiessupporting

confidence: 64%

Recent Development in Beta Titanium Alloys for Biomedical Applications

Chen

Cui

Zhang

2020

Metals

202

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β-type titanium (Ti) alloys have attracted a lot of attention as novel biomedical materials in the past decades due to their low elastic moduli and good biocompatibility. This article provides a broad and extensive review of β-type Ti alloys in terms of alloy design, preparation methods, mechanical properties, corrosion behavior, and biocompatibility. After briefly introducing the development of Ti and Ti alloys for biomedical applications, this article reviews the design of β-type Ti alloys from the perspective of the molybdenum equivalency (Moeq) method and DV-Xα molecular orbital method. Based on these methods, a considerable number of β-type Ti alloys are developed. Although β-type Ti alloys have lower elastic moduli compared with other types of Ti alloys, they still possess higher elastic moduli than human bones. Therefore, porous β-type Ti alloys with declined elastic modulus have been developed by some preparation methods, such as powder metallurgy, additive manufacture and so on. As reviewed, β-type Ti alloys have comparable or even better mechanical properties, corrosion behavior, and biocompatibility compared with other types of Ti alloys. Hence, β-type Ti alloys are the more suitable materials used as implant materials. However, there are still some problems with β-type Ti alloys, such as biological inertness. As such, summarizing the findings from the current literature, suggestions forβ-type Ti alloys with bioactive coatings are proposed for the future development.

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Section: Mechanical Propertiessupporting

confidence: 64%

Recent Development in Beta Titanium Alloys for Biomedical Applications

Chen

Cui

Zhang

2020

Metals

202

View full text Add to dashboard Cite

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“…In the modern treatment approach, 3D printed appliances are becoming more and more popular, with regards for printed orthodontic appliances [ 66 ]. For the future treatment modalities, cantilevers could be designed in the software and printed, as it is possible to print beta titanium alloys for biomedical applications [ 67 ]. Polymer 3D printing is a developing technology offering printing low-cost functional parts with diverse capabilities and properties [ 68 ].…”

Section: Discussionmentioning

confidence: 99%

Cantilevers: Multi-Tool in Orthodontic Treatment

2022

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This review aims to discuss and illustrate various uses of cantilevers to solve multiple clinical issues and prove their versatility. Cantilevers are commonly used in the segmented arch technique, and they can be designed to solve various clinical problems with highly predictable results. Its design and shape can modify the various combinations of vertical and horizontal forces. The novel trend is to combine cantilevers with skeletal anchorage. Cantilevers offer a very simple and statically determined force system. The advantage is the control over side effects, which normally occur on the anchor teeth and the occlusion. The disadvantages include possible side effects on the anchorage unit, when the anchorage is poorly controlled. The review highlights the clear benefits of cantilever use in complex corrections of single teeth, segments, and entire arch with a diminished effect on the dentition, also with the use of skeletal anchorage. With their simple and easily tailored design, these springs can be called an orthodontic multi-tool.

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“…A substitute for Ti6Al4V may be the Ti alloy Ti-15Mo-2.7Nb-3Al-0.2Si, also known as Ti21S, because it reduces the aluminum content, eliminates vanadium, improving its cytotoxicity, and presents an extremely low Young's modulus, good strength and ductility, excellent corrosion resistance and biocompatibility, which makes this material suitable for biomedical applications [68]. Additive manufacturing (AM) technologies allow the fabrication of specific and intricate patient geometries, reduce stiffness due to inherent porosity and roughness, have been shown to promote bone ingrowth and employ efficient material usage [69][70][71][72].…”

Section: Stem Propertiesmentioning

confidence: 99%

Innovative Design Methodology for Patient-Specific Short Femoral Stems

2022

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The biomechanical performance of hip prostheses is often suboptimal, which leads to problems such as strain shielding, bone resorption and implant loosening, affecting the long-term viability of these implants for articular repair. Different studies have highlighted the interest of short stems for preserving bone stock and minimizing shielding, hence providing an alternative to conventional hip prostheses with long stems. Such short stems are especially valuable for younger patients, as they may require additional surgical interventions and replacements in the future, for which the preservation of bone stock is fundamental. Arguably, enhanced results may be achieved by combining the benefits of short stems with the possibilities of personalization, which are now empowered by a wise combination of medical images, computer-aided design and engineering resources and automated manufacturing tools. In this study, an innovative design methodology for custom-made short femoral stems is presented. The design process is enhanced through a novel app employing elliptical adjustment for the quasi-automated CAD modeling of personalized short femoral stems. The proposed methodology is validated by completely developing two personalized short femoral stems, which are evaluated by combining in silico studies (finite element method (FEM) simulations), for quantifying their biomechanical performance, and rapid prototyping, for evaluating implantability.

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A 3D-Printed Ultra-Low Young’s Modulus β-Ti Alloy for Biomedical Applications

Cited by 36 publications

References 55 publications

Recent Development in Beta Titanium Alloys for Biomedical Applications

Recent Development in Beta Titanium Alloys for Biomedical Applications

Cantilevers: Multi-Tool in Orthodontic Treatment

Innovative Design Methodology for Patient-Specific Short Femoral Stems

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