3D printing of biomaterials

Bandyopadhyay, Amit; Bose, Susmita; Das, Suman

doi:10.1557/mrs.2015.3

Cited by 155 publications

(70 citation statements)

References 29 publications

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“…Finally, part accuracy and reproducibility are continuing issues with most 3D printers. 55 The fi eld of soft-material 3D printing is quite advanced. Large FDM-based printers that can print objects as substantial as cars are now commercially available.…”

Section: Current Challenges and Future Directionsmentioning

confidence: 99%

Three-dimensional printing of biomaterials and soft materials

et al. 2015

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During the past two decades, numerous biomaterials and soft materials, including ceramics, polymers, and their composites, have been fabricated for various biomedical devices and applications in tissue engineering using three-dimensional (3D) printing. This article offers a brief overview of some of the biomaterials and soft materials fabricated using some notable 3D printing techniques and related applications. A brief perspective regarding future directions of this fi eld is also provided.

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Section: Current Challenges and Future Directionsmentioning

confidence: 99%

Three-dimensional printing of biomaterials and soft materials

et al. 2015

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“…These processes are also known as 'threedimensional printing', 'layered manufacturing', 'free-form fabrication', 'rapid prototyping' and 'rapid manufacturing' [9][10][11]. The ASTM international commitee, intended for speciication of standards for additive manufacturing-ASTM F42-created a categorization of all 3D printing technologies into seven major groups [11]. According to it, the following 3D printing technologies are used in work with biomaterials: 3D ploting/direct ink writing, laser-assisted bioprinting, selective laser sintering, stereolithography, fused deposition modeling, and robot-assisted deposition/robocasting.…”

Section: Introductionmentioning

confidence: 99%

“…The American Society for Testing and Materials (ASTM) deined additive manufacturing as 'the process of joining materials to make objects from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies ' [8-10]. These processes are also known as 'threedimensional printing', 'layered manufacturing', 'free-form fabrication', 'rapid prototyping' and 'rapid manufacturing' [9][10][11]. The ASTM international commitee, intended for speciication of standards for additive manufacturing-ASTM F42-created a categorization of all 3D printing technologies into seven major groups [11].…”

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confidence: 99%

Properties of Co-Cr Dental Alloys Fabricated Using Additive Technologies

Dikova¹

2018

Biomaterials in Regenerative Medicine

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The aim of the present paper is to make a review of the properties of dental alloys, fabricated using Additive Technologies (AT). The microstructure and mechanical properties of Co-Cr alloys as well as the accuracy and surface roughness of dental constructions are discussed. In dentistry two diferent approaches can be applied for production of metal frameworks using AT. According to the irst one the wax/polymeric cast paterns are fabricated by 3D printing, than the constructions are cast from dental alloy with asprinted paterns. Through the second one the metal framework is manufactured form powder alloy directly from 3D virtual model by Selective Electron Beam Melting (SEBM) or Selective Laser Melting (SLM). The microstructure and mechanical properties of Co-Cr dental alloys, cast using 3D printed paterns, are typical for cast alloys. Their dimensional and adjustment accuracy is higher comparing to constructions, produced by traditional lost-wax casting or by SLM. The surface roughness is higher than that of the samples, cast by conventional technology, but lower comparing to the SLM objects. The microstructure of SLM Co-Cr dental alloys is ine grained and more homogeneous comparing that of the cast alloys, which deines higher hardness and mechanical properties, higher wear and corrosion resistance.Keywords: materials science and engineering, biomaterials, regenerative stomatology, additive technologies, Co-Cr dental alloys, microstructure and properties IntroductionDental alloys on the basis of cobalt and chromium are one of the most preferred for production of metal frameworks of dental constructions because of their high strength, high corrosion and wear resistance, high biocompatibility, and a relatively low cost [1,2]. The chemical composition of Co-Cr dental alloys consists of 53-67% of Co, 25-32% of Cr, 2-6% of Mo, and small © 2018 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.quantities of W, Si, Al, and others [3]. Cr, Mo, and W are added for strengthening of the solid solution. Due to the relatively large amount of Cr, dense passive layer of Cr 2 O 3 with 1-4 nm thickness on the surface as well as carbides in the microstructure of the details is formed, determining the high hardness, high corrosion, and wear resistance [4,5]. According to the phase diagram, Co-Cr dental alloys are characterized with face-centered cubic (fcc) latice, γ phase in high temperatures, and with hexagonal close packed (hcp) latice, ε phase in room temperature [4,6]. The γ phase deines the ductility, while the ε phase deines the corrosion and wear resistance of the alloy [7]. In proper alloying, the microstructure of the Co-Cr dental alloys consists mainly of γ phase and carbides of the M 23 C 6 type [4]. Therefore, the properties of Co-Cr dental alloys depend on the ratio between...

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“…5 A primary advantage for these applications is the ability to easily customize the geometry to match patients' unique anatomical structure, based on computed tomography (CT) or magnetic resonance imaging (MRI) imaging data. This 3D information, in combination with new software tools for mod eling and simulation, enables the design of highperformance and patientspecifi c medical devices.…”

Section: Introductionmentioning

confidence: 99%