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Diverse Applications of Three-Dimensional Printing in Biomedical Engineering: A Review. 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-10-10 Prachi Agarwal,Gargi Arora,Amit Panwar,Vidhi Mathur,Varadharajan Srinivasan,Deepti Pandita,Kirthanashri S Vasanthan
A three-dimensional (3D) printing is a robotically controlled state-of-the-art technology that is promising for all branches of engineering with a meritorious emphasis to biomedical engineering. The purpose of 3D printing (3DP) is to create exact superstructures without any framework in a brief period with high reproducibility to create intricate and complex patient-tailored structures for organ regeneration
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The Inner Complexities of Multimodal Medical Data: Bitmap-Based 3D Printing for Surgical Planning Using Dynamic Physiology. 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-10-10 Nicholas M Jacobson,Jane Brusilovsky,Robert Ducey,Nicholas V Stence,Alex J Barker,Max B Mitchell,Lawrence Smith,Robert MacCurdy,James C Weaver
Motivated by the need to develop more informative and data-rich patient-specific presurgical planning models, we present a high-resolution method that enables the tangible replication of multimodal medical data. By leveraging voxel-level control of multimaterial three-dimensional (3D) printing, our method allows for the digital integration of disparate medical data types, such as functional magnetic
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Case Study of Large Three-Dimensional-Printed Slider with Conformal Cooling for High-Pressure Die Casting. 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-08-09 Vladislav Andronov,Libor Beránek,Jan Zajíc,Pavel Šotka,Martin Bock
Metal three-dimensional (3D) printing technology brings several benefits to the field of high-pressure die casting of aluminum, which enhances its development. The associated conformal cooling application is already commonly used where there is a need to improve the quality of castings, increase tool life, or reduce the production cycle. However, will this technology withstand the production of a large
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Correction to: In Vitro Evaluation of Pore Size Graded Bone Scaffolds with Different Material Composition, by Daskalakis, et al. (DOI: 10.1089/3dp.2022.0138). 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-06-08
[This corrects the article DOI: 10.1089/3dp.2022.0138.].
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Effects of Immersion on Knowledge Gain and Cognitive Load in Additive Manufacturing Process Education 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-02-03 Jayant Mathur, Scarlett R. Miller, Timothy W. Simpson, Nicholas A. Meisel
Although the additive manufacturing (AM) market continues to grow, industries face barriers to AM adoption due to a shortage of skilled designers in the workforce that can apply AM effectively to meet this demand. This shortage is attributed to the high cost and infrastructural requirements of introducing high- barrier-to-entry AM processes such as powder bed fusion (PBF) into in-person learning environments
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Impact of Beam Shape on Print Accuracy in Digital Light Processing Additive Manufacture 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-02-03 Andrew Reid, James Windmill
Photopolymerization-based additive manufacturing requires selectively exposing a feedstock resin to ultraviolet (UV) light, which in digital light processing is achieved either using a digital micromirror device or a digital mask. The minimum tolerances and resolution for a multilayer process are separate for resolution through the Z-axis, looking through the thickness of a printed part, and resolution
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Influence of Polymeric Microparticle Size and Loading Concentration on 3D Printing Accuracy and Degradation Behavior of Composite Scaffolds 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-02-03 Gerry L. Koons, Panayiotis D. Kontoyiannis, Luis Diaz-Gomez, Selma Z. Elsarrag, David W. Scott, Mani Diba, Antonios G. Mikos
Successful employment of 3D printing for delivery of therapeutic biomolecules requires protection of their bioactivity on exposure to potentially inactivating conditions. Although intermediary encapsulation of the biomolecules in polymeric particulate delivery vehicles is a promising strategy for this objective, the inclusion of such particles in 3D printing formulations may critically impact the accuracy
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Optimization of a High Internal Phase Emulsion-Based Resin for Use in Commercial Vat Photopolymerization Additive Manufacturing 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-02-03 Nihan Sengokmen Ozsoz, Samand Pashneh-Tala, Frederik Claeyssens
High internal phase emulsions (HIPEs) are potential stereolithography-based resins for producing innovative lightweight porous materials; however, the use of these resins has only been shown in bespoke stereolithography setups. These studies indicated that HIPEs tend to scatter the light during structuring through stereolithography, and can produce poorly defined and low-resolution structures, but
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Soft Self-Regulating Heating Elements for Thermoplastic Elastomer-Based Electronic Skin Applications 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-02-03 Antonia Georgopoulou, Pascal Diethelm, Marius Wagner, Ralph Spolenak, Frank Clemens
Resistive heating elements can be of particular interest for many applications, such as e-skin. In this study, soft heating elements were developed by combining thermoplastic polyurethane (TPU) with carbon black. In contrast to previous studies on thermoplastic polymer-based thermistors, the heating elements could endure elongations above 100%. Due to the high melting point of the TPU and the carbon
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Surface Finish Analysis of Gradient Voltage Electrochemical Polishing of 316L Stainless Steel Parts Forming by Laser Powder Bed Fusion 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-02-03 Wenzheng Wu, Jiaqi Wang, Qingping Liu, Xuechao Li, Yiming Zhou, Aodu Zheng, Luquan Ren, Guiwei Li
Laser powder bed fusion (LPBF) of complex-structure 316L stainless steel (316L ss) parts has a wide application prospects in aerospace, biomedical, and defense industry fields. However, the surface roughness (Ra) of the LPBF sample is unsatisfactory due to the process characteristics of layer-by-layer selective melting and cumulative forming, which limits its applications in the engineering field.
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Conductive Additive Manufactured Acrylonitrile Butadiene Styrene Filaments: Statistical Approach to Mechanical and Electrical Behaviors 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-02-03 Osman Ulkir
Additive manufacturing is a process in which digital three-dimensional (3D) design data are used to build a component in layers by accumulating materials. There are many materials used in additive manufacturing technology. The most basic features that distinguish these materials are their strength and electrical behavior. They can be strong or flexible, resistant to abrasion, depending on the application
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The Influence of Fused Deposition Modeling Parameters on the Properties of PA6/PA66 Composite Specimens by the Taguchi Method and Analysis of Variance 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-02-03 Zhongbei Li, Youcai Liu, Zihai Liang, Yaochi Liu
Fused deposition modeling (FDM) is widely used in the rapid prototyping of polymers. Polyamide (PA) has excellent mechanical properties, but its application in FDM is limited due to its high water absorption, warpage, and forming shrinkage. The material of the filament and the printing parameters of the printer are two critical aspects that affect the performance of a component. The prepared PA6/PA66
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Effect of Microstructure and Dislocation Density on Material Removal and Surface Finish of Laser Powder Bed Fusion 316L Stainless Steel Subject to a Self-Terminating Etching Process 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-01-31 Stephanie Prochaska, Michael Walker, Owen Hildreth
Postprocessing of additively manufactured (AM) metal parts to remove support structures or improve the surface condition can be a manually intensive process. One novel solution is a two-step, self-terminating etching process (STEP), which achieves both support removal and surface smoothing. While the STEP has been demonstrated for laser powder bed fusion (L-PBF) 316L stainless steel, this work evaluates
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Synthesis and Investigation of Mechanical Properties of the Acrylonitrile Butadiene Styrene Fiber Composites Using Fused Deposition Modeling 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-01-30 Ali Zahid, Muhammad Tuoqeer Anwar, Arslan Ahmed, Yasir Raza, Ghulam Abbas Gohar, Muhammad Jamshaid
Additive manufacturing is becoming a global phenomenon due to its versatile properties and numerous benefits, which is not possible by conventional machining processes. Fused deposition modeling (FDM) shows a huge potential of shift from rapid prototyping toward the rapid manufacturing. Nowadays, the strength of the FDM-printed parts is very important to consider along with all the printing parameters
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Additive Manufacturing for Bioinspired Structures: Experimental Study to Improve the Multimaterial Adhesion Between Soft and Stiff Materials 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-01-20 Gianni Stano, S.M. Al Islam Ovy, Gianluca Percoco, Runyu Zhang, Hongbing Lu, Yonas Tadesse
The fabrication of bioinspired structures has recently gained an increasing popularity: mimicking the way in which nature develops structures is a vital prerequisite in soft robotics to achieve multiple benefits. Stiff structures connected by soft joints (recalling, for instance, human bones connected by cartilage) are highly appealing: several prototypes have been manufactured and tested, demonstrating
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Rapid Continuous 3D Printing via Orthogonal Dual-Color Photoinitiation and Photoinhibition 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-01-20 Min Hu, Haobo Cheng, Yunpeng Feng
Stereolithographic additive manufacturing technology has developed from point-by-point scanning exposure to layer-by-layer masking curing and even volumetric printing. Rapid prototyping is one of the important goals pursued by researchers. A continuous three-dimensional (3D) printing system based on the dual-color photoinitiation and photoinhibition is proposed with the aim of further improving printing
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Simulation-Based Support Generation for Laser Powder Bed Fusion Processes 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-01-13 Eugen Boos, Steffen Ihlenfeldt, Nikolaus Milaev, Marco Bruns, Beatrix A.M. Elsner
The rise of additive manufacturing, particularly laser powder bed fusion, has enabled new degrees of freedom in terms of design and functionality. Notably high-performance industries such as the medical, automotive, and aerospace industries are on the edge of broad industrial application. However, the quality standards required for these industries are not yet entirely met. Process-related temperature-induced
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Corrosion Performance of Wire Arc Additive Manufacturing of Stainless Steel: A Brief Critical Assessment 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-01-13 Babatunde Olamide Omiyale, Ikeoluwa Ireoluwa Ogedengbe, Temitope Olumide Olugbade, Peter Kayode Farayibi
To enhance the products fabricated from wire arc additive manufacturing (WAAM) processes, it is very important to implement a critical assessment of the corrosion performance of additively manufactured stainless steel (SS) for the application of additive manufacturing parts widely used in industries. The common defects in metal additive manufacturing, which include porosity, poor surface finish, oxidation
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One-Shot 3D Printed Soft Device Actuated Using Metal-Filled Channels and Sensed with Embedded Strain Gauge 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-01-13 Antonio Pavone, Gianni Stano, Gianluca Percoco
In this article, the multimaterial extrusion (M-MEX) technology is used to fabricate, in a single step, a three-dimensional printed soft electromagnetic (EM) actuator, based on internal channels, filled with soft liquid metal (Galinstan) and equipped with an embedded strain gauge, for the first time. At the state of the art, M-MEX techniques result underexploited for the manufacture of soft EM actuators:
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An Intelligent and Efficient Workflow for Path-Oriented 3D Bioprinting of Tubular Scaffolds 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2023-01-02 Timo Baroth, Sebastian Loewner, Henrik Heymann, Fabian Cholewa, Holger Blume, Cornelia Blume
Modern 3D printing is a valuable tool for tissue engineering (TE), and the fabrication of complex geometries such as tubular scaffolds with adaptable structure, for example, as replacements for intestines, bronchi, esophagus, or vessels, could contribute to standardized procedures in the future of regenerative medicine. However, high-precision bioprinting of scaffolds for tubular TE applications remain
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A Novel Cryogenic Approach to 3D Printing Cytocompatible, Conductive, Hydrogel-Based Inks 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-30 Aida Shoushtari Zadeh Naseri, Cormac Fay, Andrew Nattestad, Gregory Ryder, Sepidar Sayyar, Zhilian Yue, Xiao Liu, David L. Officer, Gordon G. Wallace
In the field of tissue engineering and regenerative medicine, developing cytocompatible 3D conductive scaffolds that mimic the native extracellular matrix is crucial for the engineering of excitable cells and tissues. In this study, a custom cryogenic extrusion 3D printer was developed, which afforded control over both the ink and printing surface temperatures. Using this approach, aqueous inks were
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Carbon-Based Piezoresistive Polymer Nanocomposites by Extrusion Additive Manufacturing: Process, Material Design, and Current Progress 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-29 James D. Banks, Anahita Emami
Advancement in additive manufacturing (AM) allows the production of nanocomposites with complex and custom geometries not typically allowable with conventional manufacturing techniques. The benefits of AM have led to recent interest in producing multifunctional materials capable of being printed with current AM technologies. In this article, piezoresistive composites realized by AM and the matrices
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The Roles of Microprobe in Localized Electrodeposition: Electrolyte Localized Transport and Force-Displacement Sensitivity 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-29 Wanfei Ren, Manfei Wang, Xiaoqing Sun, Edgar Hepp, Jinkai Xu
Facing the rapid development of 6G communication, long-wave infrared metasurface and biomimetic microfluidics, the performance requirements for microsystems based on metal tiny structures are gradually increasing. As one of powerful methods for fabrication metal complex microstructures, localized electrochemical deposition microadditive manufacturing technology can fabricate copper metal micro overhanging
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Simulation of Binder Jetting and Analysis of Magnesium Alloy Bonding Mechanism 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-29 Qiang Yang, Mei Li, Ze Zhao, Ximeng Liao, Junchao Li
Binder jetting (3DP) is a kind of additive manufacturing at room temperature and atmospheric environment, which can reduce the risk of magnesium alloy forming. Magnesium alloy powder is bonded to a certain structure by a binder, so the appropriate binder is very important in 3DP. In this study, according to the characteristics of magnesium alloy, a simple and easy-to-obtain water-based low-molecular
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Codesign of Biobased Cellulose-Filled Filaments and Mesostructures for 4D Printing Humidity Responsive Smart Structures 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-26 Yasaman Tahouni, Tiffany Cheng, Silvia Lajewski, Johannes Benz, Christian Bonten, Dylan Wood, Achim Menges
Hygromorphic smart structures are advantageous as passively actuated systems for generating movement, with applications ranging from weather-responsive architectural building skins to adaptive wearables and microrobotics. Four-dimensional (4D) printing is a valuable method for multiscale fabrication and physical programming of such structures. However, material limitations in terms of printability
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Circumventing Solidification Cracking Susceptibility in Al–Cu Alloys Prepared by Laser Powder Bed Fusion 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-26 Lixia Xi, Qiuyang Lu, Dongdong Gu, Shaoting Cao, Han Zhang, Ivan Kaban, Baran Sarac, Konda Gokuldoss Prashanth, Jürgen Eckert
Laser powder bed fusion (LPBF) of Al–Cu alloys shows high susceptibility to cracking due to a wide solidification temperature range. In this work, 2024 alloys were manufactured by LPBF at different laser processing parameters. The effect of processing parameters on the densification behavior and mechanical properties of the LPBF-processed 2024 alloys was investigated. The results show that the porosity
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In Vitro Evaluation of Pore Size Graded Bone Scaffolds with Different Material Composition 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-22 Evangelos Daskalakis, Boyang Huang, Mohamed H. Hassan, Abdalla M. Omar, Cian Vyas, Anil A. Acar, Ali Fallah, Glen Cooper, Andrew Weightman, Gordon Blunn, Bahattin Koç, Paulo Bartolo
The demand for biomimetic and biocompatible scaffolds in equivalence of structure and material composition for the regeneration of bone tissue is relevantly high. This article is investigating a novel three-dimensional (3D) printed porous structure called bone bricks with a gradient pore size mimicking the structure of the bone tissue. Poly-ɛ-caprolactone (PCL) combined with ceramics such as hydroxyapatite
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A Comprehensive Overview of Additive Manufacturing Processes Through a Time-Based Classification Model 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-22 Maria Koltsaki, Maria Mavri
The ongoing crisis caused by the COVID-19 pandemic produced major reshuffles on the world map, bringing imbalance, uncertainty, and accumulated stress. Due to supply chain disruptions, the need for innovation has emerged both as a priority and a necessity and three-dimensional printing (3DP) proved to be a primary, smart, effective, and innovative additive manufacturing (AM) method. AM refers to the
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Comparative Performance Study of Acidic Pumice and Basic Pumice Inclusions for Acrylonitrile–Butadiene–Styrene-Based Composite Filaments 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-20 Ümit Tayfun, Seha Tirkeş, Mehmet Doğan, Süha Tirkeş, Mehmet Zahmakıran
This study aims to evaluate the effective use of porous pumice powder as an additive in acrylonitrile–butadiene–styrene (ABS)-based composite materials. The influence of pumice addition on mechanical, thermomechanical, thermal, and physical properties of ABS filaments was reported. Two types of pumice, namely acidic pumice (AP) and basic pumice (BP), were melt compounded with ABS at loading levels
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Defining Soft Tissue: Bitmap Printing of Soft Tissue for Surgical Planning 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Nicholas Jacobson, Erik Carerra, Lawrence Smith, Lorna Browne, Nicholas Stence, Alison Sheridan, Robert MacCurdy
Nearly all applications of 3D printing for surgical planning have been limited to bony structures and simple morphological descriptions of complex organs due to the fundamental limitations in accuracy, quality, and efficiency of the current modeling paradigms and technologies. Current approaches have largely ignored the constitution of soft tissue critical to most surgical specialties where multiple
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Consumer Assessment of 3D-Printed Food Shape, Taste, and Fidelity Using Chocolate and Marzipan Materials 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Stefania Chirico Scheele, Christina Hartmann, Michael Siegrist, Martin Binks, Paul F. Egan
Additive manufacturing enables the production of complex structures with emerging approaches showing great promise in the food industry for design customization. Three-dimensional food printing has benefits for providing personalized health and shape fabrication for consumers. Past studies have demonstrated positive consumer perceptions for 3D food printing, but there is still a need for consumer validation
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Remodeling of Architected Mesenchymal Microtissues Generated on Mechanical Metamaterials 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Chenyan Wang, Zacharias Vangelatos, Tackla Winston, Shiyang Sun, Costas P. Grigoropoulos, Zhen Ma
Mechanical metamaterials constitute a nascent category of architected structures comprising arranged periodic components with tailored geometrical features. These materials are now being employed as advanced medical implants due to their extraordinary mechanical properties over traditional devices. Nevertheless, to achieve desired tissue integration and regeneration, it is critical to study how the
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A Micro-Scale Non-Linear Finite Element Model to Optimize the Mechanical Behavior of Bioprinted Constructs 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Abhinaba Banerjee, Sudipto Datta, Ankita Das, Amit Roy Chowdhury, Pallab Datta
Extrusion-based bioprinting is an enabling biofabrication technique that is used to create heterogeneous tissue constructs according to patient-specific geometries and compositions. The optimization of bioinks as per requirements for specific tissue applications is an essential exercise in ensuring clinical translation of the bioprinting technologies. Most notably, optimum hydrogel polymer concentrations
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Evaluation of Different Root Canal Obturation Techniques in Internal Root Resorption of Three-Dimensional Printed Teeth Manufactured Using Computer Software 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Senem Yiğit Özer, Hicran Dönmez Özkan, İlayda Oyucu
The objective of this study was to evaluate and compare the filling ability of various root canal obturation techniques on the internal root resorption (IRR) cavities of replicated tooth samples manufactured using computer software and a three-dimensional (3D) printer. Orthographic images and root structures of a healthy upper maxilla central incisor in determined volumes and sizes were drawn as a
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Multiresin Additive Manufacturing Process for Printing a Complete Denture and an Analysis of Accuracy 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Cho-Pei Jiang, M. Fahrur Rozy Hentihu, Shyh-Yuan Lee, Richard Lin
A complete denture, consisting of teeth and a gum base, is a standard device used to restore masticatory and esthetic functions in patients with complete edentulism. The different colors and mechanical properties for teeth and the gum base mean a complete denture is manufactured using two materials with different mechanical properties. This study proposes a method to make a complete denture using a
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Binder Jetting of Custom Silicone Powder for Direct Three-Dimensional Printing of Maxillofacial Prostheses 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Yun Chang Lee, Jisi Zheng, Jonathan Kuo, Giovanny F. Acosta-Vélez, Chase S. Linsley, Benjamin M. Wu
Recent advances in digital workflow have transformed clinician's ability to offer patient-specific devices for medical and dental applications. However, the digital workflow of patient-specific maxillofacial prostheses (MFP) remains incomplete, and several steps in the manufacturing process are still labor-intensive and are costly in both time and resources. Despite the high demand for direct digital
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3D Printed Housing Devices for Segregated Compartmental Delivery of Oral Fixed-Dose Anti-Tubercular Drugs Adopting Print and Fill Strategy 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Tushar Kanti Malakar, Vishal Sharad Chaudhari, Santosha Kumar Dwivedy, Upadhyayula Suryanarayana Murty, Subham Banerjee
World Health Organization (WHO) recommends the use of first-line anti-tuberculosis drugs, that is, rifampicin (RIF) and isoniazid (INH) fixed-dose combination (FDC) therapies in tuberculosis (TB) disease. The absorption of RIF from an FDC incorporates INH, and it is significantly compromised due to its reaction with INH, resulting in a severe loss of RIF under gastric stomach pH condition. Such reduction
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Benefits of 3D Printed and Customized Anatomical Footwear Insoles for Plantar Pressure Distribution 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Sona Jandova, Radomir Mendricky
During walking, the foot is in direct contact with the insole of the footwear, and it affects the biomechanics of the whole human body. The aim of this study was to compare the plantar pressure distribution while walking in the same footwear in three different situations: with an original footwear insole, with an ethylene-vinyl acetate customized insole, and with a 3D printed anatomical insole to find
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3D Printable Thermoplastic Polyurethane Energy Efficient Passive Foot 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-13 Muhammad Hassaan Ahmed, Asharib Jamshid, Usman Amjad, Aashir Azhar, Muhammad Zawar ul Hassan, Mohsin Islam Tiwana, Waqar Shahid Qureshi, Eisa Alanazi
Passive energy storing prosthetics are redesigned to improve the stored and recovered energy during different phases of the gait cycle. Furthermore, the demand of the low-cost passive prosthesis that are capable of energy storing is increasing day by day especially in underdeveloping countries. This article proposes a new passive foot design that is more energy efficient if 3D printed using thermoplastic
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In Situ Reactive Printing of Aluminum Matrix Composite with Ultra-High Volume Fraction Reinforcement 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-12-07 Chenxi Tian, Atieh Moridi
Additive manufacturing (AM) can fabricate intricate structures that are infeasible or uneconomical for conventional manufacturing methods. Its unique capabilities have motivated emergence of several printing technologies and extensive research in material adoption in particular ferrous-, Ti-, and Ni-based alloys. Meanwhile, the large freezing range and high reflectivity of aluminum, a lightweight structural
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Additive Manufacturing of Stretchable Multi-Walled Carbon Nanotubes/Thermoplastic Polyurethanes Conducting Polymers for Strain Sensing 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-28 Fuxi Liu, Dezhi Bai, Deqiao Xie, Fei Lv, Lida Shen, Zongjun Tian, Jianfeng Zhao
With the development of science and technology, flexible sensors play an indispensable role in body monitoring. Rapid prototyping of high-performance flexible sensors has become an important method to develop flexible sensors. The purpose of this study was to develop a flexible resin with multi-walled carbon nanotubes (MWCNTs) for the rapid fabrication of flexible sensors using digital light processing
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Selected Mechanical and Rheological Properties of Medical Resin MED610 in PolyJet Matrix Three-Dimensional Printing Technology in Quality Aspects 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-25 Jerzy Bochnia, Tomasz Kozior, Wiktor Szot, Mateusz Rudnik, Paweł Zmarzły, Damian Gogolewski, Paweł Szczygieł, Mateusz Musiałek
In connection with the growing demand of the medical and medicine-related industry for materials exhibiting biocompatible properties used as part of three-dimensional (3D) printing additive technologies. The article presents research results concerning rheological and selected mechanical properties of a modern, photocurable MED610 resin, which is also used mainly in medicine, as well as dentistry.
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Direct Fabrication of Microcantilever Structures with High Shape Accuracy Using Projection-Based Stereolithography 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-25 Zhongwei Yu, Xinghong Deng, Jing Qiao, Dekai Zhou, Longqiu Li
Microcantilever structures such as microgears play an important role in precision mechanisms, where highly accurate cantilever characteristics guarantee the reliable function of these structures. Projection-based stereolithography (PSL) technology is widely used to fabricate sophisticated microstructures owing to its high precision and remarkable efficiency, and plenty of works have been done to improve
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Three-Dimensional Printing of Ultrasoft Silicone with a Functional Stiffness Gradient 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-23 Clayton A. Young, MeiLi O'Bannon, Scott L. Thomson
A methodology for three-dimensionally printing ultrasoft silicone with a functional stiffness gradient is presented. Ultraviolet-cure silicone was deposited via two independently controlled extruders into a thixotropic, gel-like, silicone oil-based support matrix. Each extruder contained a different liquid silicone formulation. The extrusion rates were independently varied during printing such that
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Interfacial Properties of Three-Dimensional-Printed Permanent Formwork with Cast-in-Place Concrete 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-14 Li Wang, Yu Yang, Yuanyuan Hu, Guowei Ma
The rapid construction of prefabricated components of reinforced-concrete structures using three-dimensional (3D) printing of concrete as a permanent formwork is a promising way to combine 3D printing organically with traditional construction technology. The bonding property of the contact interface between the 3D-printed permanent formwork and internal postcast concrete is crucial for maintaining
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On the Difference in Mechanical Behavior of Glass Bead-Filled Polyamide 12 Specimens Produced by Laser Sintering and Injection Molding 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-11 Hellen De Coninck, Sebastian Meyers, Peter Van Puyvelde, Brecht Van Hooreweder
An increasing demand for additively manufactured polymer composites with optimized mechanical properties is manifesting in different industries such as aerospace, biomedical, and automotive. Laser sintering (LS) is an additive manufacturing method that has the potential to produce reinforced polymers, which can meet the stringent requirements of these industries. For the development of a commercially
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Investigating the Mechanical Properties of Polymer Samples from Different Additive Manufacturing Processes Using Ultrasonic Phase Spectroscopy 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-09 Philipp Eyer, Sarah Enzler, Anna Trauth, Kay André Weidenmann
Additive manufacturing processes have recently been used more frequently since they offer high design freedom and easy individualization of components. The processes have been optimized to improve mechanical performance of the manufactured parts. Nevertheless, properties of components made by means of injection molding could not be reached yet. In the study at hand, ultrasonic phase spectroscopy (UPS)
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Bone Tissue Engineering Scaffolds: Materials and Methods 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-09 Shreeprasad S. Manohar, Chinmoy Das, Vikramjit Kakati
The wide development in biomedical, regenerative medicine, and surgical techniques has ensured that new technologies are developed to improve patient-specific treatment and care. Tissue engineering is a special field in biomedical engineering that works toward cell development using scaffolds. Bone tissue engineering is a separate branch of tissue engineering, in which the construction of bone, functionalities
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Mechanical Properties and Pore Structure of Multiwalled Carbon Nanotube-Reinforced Reactive Powder Concrete for Three-Dimensional Printing Manufactured by Material Extrusion 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-09 Deyuan Kan, Guifeng Liu, Shuang Cindy Cao, Zhengfa Chen, Qifeng Lyu
Three-dimensional (3D) concrete printing technology has been considered promising, attracting extensive attention in the engineering field. Multiwalled carbon nanotubes (MWCNTs) have been used as an additive to reinforce the cement-based material. However, the research on the 3D printed MWCNT-reinforced high-strength concrete is rare. This research is to study the mechanical properties and pore structure
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Efficient Fabrication of Quartz Glass Using Laser Coaxial Powder-Fed Additive Manufacturing Approach 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-07 Ming Lang, Xiao-Li Ruan, Chong He, Zhi-Qiang Chen, Tao Xu, Hai-Bin Zhang, Yun-Tao Cheng
This article investigates a laser-directed energy deposition additive manufacturing (AM) method, based on coaxial powder feeding, for preparing quartz glass. Through synergistic optimization of line deposition and plane deposition experiments, key parameters of laser coaxial powder feeding AM were identified. The corresponding mechanical properties, thermal properties, and microstructure of the bulk
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Durability of Vacuum Infusion Tooling Produced from Fused Granular Fabrication Additive Manufacturing 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-02 Nathan Northrup, Jason M. Weaver, Andrew R. George
Fused Granular Fabrication Additive Manufacturing (FGF AM) has the capability to create tooling that is lower cost than conventionally manufactured tooling and still has sufficient properties for many applications. A vacuum infusion (VI) mold was printed from fiberglass-acrylonitrile butadiene styrene (ABS) and evaluated for wear and suitability for small VI runs. The mold was designed to accentuate
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Three-Dimensional Printed Hydroxyapatite Bone Substitutes Designed by a Novel Periodic Minimal Surface Algorithm Are Highly Osteoconductive 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-01 Ekaterina Maevskaia, Nupur Khera, Chafik Ghayor, Indranil Bhattacharya, Julien Guerrero, Flora Nicholls, Christian Waldvogel, Ralph Bärtschi, Lea Fritschi, Dániel Salamon, Mutlu Özcan, Patrick Malgaroli, Daniel Seiler, Michael de Wild, Franz E. Weber
Autologous bone remains the gold standard bone substitute in clinical practice. Therefore, the microarchitecture of newly developed synthetic bone substitutes, which reflects the spatial distribution of materials in the scaffold, aims to recapitulate the natural bone microarchitecture. However, the natural bone microarchitecture is optimized to obtain a mechanically stable, lightweight structure adapted
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Optimizing Luminous Transmittance of a Three-Dimensional-Printed Fixed Bed Photobioreactor 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-11-01 Kai Scherer, Adrian Huwer, Roland Ulber, Michael Wahl
The development of innovative production processes and the optimization of photobioreactors play an important role in generating industrial competitive production technologies for phototrophic biofilms. With emerse photobioreactors a technology was introduced that allowed efficient surface attached cultivation of terrestrial cyanobacteria. However, the productivity of emerse photobioreactors depends
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The Novel Hybrid Lattice Structure Approach Fabricated by Laser Powder Bed Fusion and Mechanical Properties Comparison 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-10-31 Hamaid Mahmood Khan, Cemal İrfan Çalışkan, Mustafa Enes Bulduk
Aluminum-based cellular structures are gaining a huge traction in several applications, including lightweight aircraft, military equipment, and heat exchangers. With additive manufacturing, the fabrication of complex periodic cellular structures with any unit cell form, size, and volume fraction has become a lot easier, allowing for more investment, research, and attention from both academia and industry
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Controlling Morphing Behavior in 4D Printing: A Review About Microstructure and Macrostructure Changes in Polylactic Acid 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-10-21 Mylene S. Cadete, Tiago E.P. Gomes, Idalina Gonçalves, Victor Neto
Four-dimensional (4D) printing combines stimulus-responsive materials with additive manufacturing (AM) technologies. This new concept of printing three-dimensional (3D) objects opens the possibility for solving processing issues, through the production of complex geometries that can undergo programmed temporal changes in response to external stimuli. However, as 4D technology emerges from AM, various
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Rapid Fabrication of Silica Microlens Arrays via Glass 3D Printing 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-10-21 Chunxin Liu, Taras Oriekhov, Cherrie Lee, Clarissa M. Harvey, Michael Fokine
Rapid manufacturing of high purity fused silica glass micro-optics using a filament-based glass 3D printer has been demonstrated. A multilayer 5 × 5 microlens array was printed and subsequently characterized, showing fully dense lenses with uniform focal lengths and good imaging performance. A surface roughness on the order of Ra = 0.12 nm was achieved. Printing time for each lens was <10 s. Creating
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Single-Step 3D Printing of Bio-Inspired Printable Joints Applied to a Prosthetic Hand 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-10-21 Haemin Lee, JongHoo Park, Brian Byunghyun Kang, Kyu-Jin Cho
Single-step 3D printing, which can manufacture complicated designs without assembly, has the potential to completely change our design perspective, and how 3D printing products, rather than printing static components, ready-to-use movable mechanisms become a reality. Existing 3D printing solutions are challenged by precision limitations, and cannot directly produce tightly mated moving surfaces. Therefore
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Interface Healing Between Adjacent Tracks in Fused Filament Fabrication Using In-Process Laser Heating 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-10-21 Pu Han, Alireza Tofangchi, Sihan Zhang, Julio Jair Izquierdo, Keng Hsu
Fused filament fabrication is one of the most desired thermal plastic additive manufacturing processes because of its ability to fabricate complex objects with high accessibility. However, due to the extrusion track-based direct write process mechanism, parts built using this method exhibit anisotropic mechanical properties. In this work, an in-process laser heating method is introduced to heal interface
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Three-Dimensional Printed Laryngoscopes as Allies Against COVID-19 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-10-14 Florentino Fernandes Mendes, Leandro de Freitas Spinelli, Pedro Antônio Sartini Dutra, Eduard Santos de Braga, Luis Fernando Marcelino Braga, Andreia Gomes Aires, Simone Schneider Amaral, Afonso Reguly, Gisele Orlandi Introíni
The COVID-19 pandemic has caused an overload on the health care system on a global scale. Because the disease affects the respiratory system, patients may require ventilator equipment for breathing, and consequently, numerous tracheal intubations have been performed. The video laryngoscope is a medical device that aids this procedure. It is used by anesthesiologists to visualize the anatomical structures
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Three-Dimensional Printable Magnetic Microfibers: Development and Characterization for Four-Dimensional Printing 3D Print. Addit. Manuf. (IF 3.1) Pub Date : 2022-10-14 Yanwen Han, Qing Lu, Jing Xie, Ki-Young Song, Dun Luo
This study proposes a novel and simple fabrication method of magnetic microfibers, employing filament stretching three-dimensional (3D) printing, and demonstrates the capacity of four-dimensional (4D) printing of the proposed magnetic microfibers. A ferromagnetic 3D printing filament is prepared by the mixture of neodymium-iron-boron (NdFeB) and polylactic acid (PLA), and we investigate the characteristics