1
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Liu A, Qin Y, Dai J, Song F, Tian Y, Zheng Y, Wen P. Fabrication and performance of Zinc-based biodegradable metals: From conventional processes to laser powder bed fusion. Bioact Mater 2024; 41:312-335. [PMID: 39161793 PMCID: PMC11331728 DOI: 10.1016/j.bioactmat.2024.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 05/25/2024] [Accepted: 07/15/2024] [Indexed: 08/21/2024] Open
Abstract
Zinc (Zn)-based biodegradable metals (BMs) fabricated through conventional manufacturing methods exhibit adequate mechanical strength, moderate degradation behavior, acceptable biocompatibility, and bioactive functions. Consequently, they are recognized as a new generation of bioactive metals and show promise in several applications. However, conventional manufacturing processes face formidable limitations for the fabrication of customized implants, such as porous scaffolds for tissue engineering, which are future direction towards precise medicine. As a metal additive manufacturing technology, laser powder bed fusion (L-PBF) has the advantages of design freedom and formation precision by using fine powder particles to reliably fabricate metallic implants with customized structures according to patient-specific needs. The combination of Zn-based BMs and L-PBF has become a prominent research focus in the fields of biomaterials as well as biofabrication. Substantial progresses have been made in this interdisciplinary field recently. This work reviewed the current research status of Zn-based BMs manufactured by L-PBF, covering critical issues including powder particles, structure design, processing optimization, chemical compositions, surface modification, microstructure, mechanical properties, degradation behaviors, biocompatibility, and bioactive functions, and meanwhile clarified the influence mechanism of powder particle composition, structure design, and surface modification on the biodegradable performance of L-PBF Zn-based BM implants. Eventually, it was closed with the future perspectives of L-PBF of Zn-based BMs, putting forward based on state-of-the-art development and practical clinical needs.
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Affiliation(s)
- Aobo Liu
- State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Yu Qin
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Jiabao Dai
- State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Fei Song
- Department of Orthopedics, Beijing Tsinghua Changgung Hospital, Beijing, 102218, China
| | - Yun Tian
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, China
| | - Yufeng Zheng
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Peng Wen
- State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
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2
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Wang G, Liu J, Lian T, Sun Y, Chen X, Todo M, Osaka A. Distribution and propagation of stress and strain in cube honeycombs as trabecular bone substitutes: Finite element model analysis. J Mech Behav Biomed Mater 2024; 159:106647. [PMID: 39178822 DOI: 10.1016/j.jmbbm.2024.106647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 06/23/2024] [Accepted: 06/30/2024] [Indexed: 08/26/2024]
Abstract
For designing trabecular (Tb) bone substitutes suffering from osteoporosis, finite element model (FEM) simulations were conducted on honeycombs (HCs) of 8 × 8 × 1 (2D) and 8 × 8 × 8 (3D) assemblies of cube cellular units consisting of 0.9 mm long Nylon® 66 (PA, Young's modulus E: 2.83 GPa) and polyethylene (PE, E: 1.1 GPa) right square prisms. Osteoporotic damage to the Tb bone was simulated by removing the inner vertical struts (pillars; the number of removed pillars: Δn ≤ 300) and by thinning the strut (thickness, d: 0.4-0.1 mm), while the six facade lattices were kept flawless. Uniform and uniaxial compressive loads on the HCs induced elastic deformation of the struts. The pillars held almost all the load, while the horizontal struts (beams) shared little. E for PA 3D HCs of all d smoothly decreased with Δn. PA 3D HCs of 0.2 mm struts deserved to be the substitutes for Tb bone, while PE 3D HCs of 0.05 mm struts were only for the Tb bone of the poorest bone quality. For the PA 3D HCs, the maximum von Mises stress (σM) first rapidly increased with Δn and showed a break at Δñ50, then gradually approached the yield stress of PA (50 MPa). Moreover, small portions of the stress were transferred from the façade pillars to the adjacent inner beams, especially those near the lost-pillar sites, denoted as X defects. The floor beams of thinner struts associated with the X-defects were lifted, and similar lifting effects in smaller amounts were propagated to the other floors. The 3DHCs of the thicker struts showed no such flexural deformations. The concept of force percolation through the remaining struts was proposed to interpret those mechanical behaviors of the HCs.
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Affiliation(s)
- Guangxin Wang
- School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China.
| | - Jiaqi Liu
- School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China
| | - Tingting Lian
- School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China
| | - Yanyan Sun
- School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China
| | - Xuewen Chen
- School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China
| | - Mitsugu Todo
- Research Institute for Applied Mechanics, Kyushu University, Kasuga, 816-8580, Japan
| | - Akiyoshi Osaka
- School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, Henan Province, 471023, PR China; Faculty of Engineering, Okayama University, Tsushima, Okayama, 700-8530, Japan.
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3
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Xiong D, Ruan P, Li Z, Yi W, Wang J. A General Strategy for Sustainable 3D Printing Based on A Multifunctional Photoinitiator. Angew Chem Int Ed Engl 2024; 63:e202406047. [PMID: 38739107 DOI: 10.1002/anie.202406047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/08/2024] [Accepted: 05/13/2024] [Indexed: 05/14/2024]
Abstract
A multifunctional photoinitiator is presented, offering precise control over light-induced polymerization initiation at 450 nm and material degradation at 365 nm. This is accomplished by covalently linking photoactive bis(acyl)phosphane oxide and photocleavable o-nitrobenzyl ether moieties onto the surface of γ-cyclodextrin. Upon degradation, the resulting linear polymers can be easily re-dissolved in their corresponding monomer and re-cured, exhibiting superior mechanical properties compared to the pristine material. Moreover, this photoinitiator enables the successful 3D printing of intricate and precise structures, representing a promising general strategy for developing recyclable photoresins for 3D printing applications.
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Affiliation(s)
- Dajun Xiong
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology (NJUST), Nanjing, 210094, China
| | - Pengfei Ruan
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology (NJUST), Nanjing, 210094, China
| | - Zongan Li
- Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing School of Electrical and Automation Engineering, Nanjing Normal University, Nanjing, 210023, China
| | - Wenbin Yi
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology (NJUST), Nanjing, 210094, China
| | - Jieping Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology (NJUST), Nanjing, 210094, China
- Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing School of Electrical and Automation Engineering, Nanjing Normal University, Nanjing, 210023, China
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4
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Schipka R, Heltmann-Meyer S, Schneidereit D, Friedrich O, Röder J, Boccaccini AR, Schrüfer S, Schubert DW, Horch RE, Bosserhoff AK, Arkudas A, Kengelbach-Weigand A, Schmid R. Characterization of two different alginate-based bioinks and the influence of melanoma growth within. Sci Rep 2024; 14:12945. [PMID: 38839791 PMCID: PMC11153560 DOI: 10.1038/s41598-024-63642-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 05/30/2024] [Indexed: 06/07/2024] Open
Abstract
Extrusion-based bioprinting is an established method in biofabrication. Suitable bioinks have fundamentally different compositions and characteristics, which should be examined, in order to find a perfect model system. Here, we investigate the effect of two alginate-based, yet unalike 3D-printed bioinks, pre-crosslinked alginate-dialdehyde gelatin (ADA-GEL) and a mixture of alginate, hyaluronic acid, and gelatin (Alg/HA/Gel), on the melanoma cell line Mel Im and vice versa in terms of stiffness, shrinkage, cellular behavior and colony formation over 15 days. Rheological stiffness measurements revealed two soft gels with similar storage moduli. The cells did not have a significant impact on the overall stiffness, whereas ADA-GEL (2.5/2.5%) was significantly stiffer than Alg/HA/Gel (0.5/0.1/3%). Regarding the shrinkage of printed constructs, cells had a significant influence, especially in ADA-GEL, which has covalent bonds between the oxidized alginate and gelatin. Multi-photon microscopy exhibited proliferation, cell spreading and migration in ADA-GEL with cell-cell and cell-matrix interaction, dissimilarly to Alg/HA/Gel, in which cells formed spherical, encapsulated colonies. Scanning electron microscopy and histology showed degradation and multi-layered growth on ADA-GEL and fewer examples of escaped cells on Alg/HA/Gel. Both gels serve as proliferation bioink for melanoma with more necrosis in deeper Alg/HA/Gel colonies and differences in spreading and matrix interaction. These findings show the importance of proper characterization of the bioinks for different applications.
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Affiliation(s)
- Raphael Schipka
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Stefanie Heltmann-Meyer
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Dominik Schneidereit
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nürnberg, 91052, Erlangen, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nürnberg, 91052, Erlangen, Germany
| | - Jonas Röder
- Institute of Biomaterials, Friedrich-Alexander-University Erlangen-Nürnberg, 91058, Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Friedrich-Alexander-University Erlangen-Nürnberg, 91058, Erlangen, Germany
| | - Stefan Schrüfer
- Institute of Polymer Materials, Friedrich-Alexander-University Erlangen-Nürnberg, 91058, Erlangen, Germany
- RevoBITs, Friedrich-Alexander-University Erlangen-Nürnberg, 91058, Erlangen, Germany
| | - Dirk W Schubert
- Institute of Polymer Materials, Friedrich-Alexander-University Erlangen-Nürnberg, 91058, Erlangen, Germany
| | - Raymund E Horch
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Anja K Bosserhoff
- Institute of Biochemistry, Friedrich-Alexander-University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Andreas Arkudas
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Annika Kengelbach-Weigand
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Rafael Schmid
- Department of Plastic and Hand Surgery, Laboratory for Tissue Engineering and Regenerative Medicine, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91054, Erlangen, Germany.
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5
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De Stefano M, Singh K, Raina A, Mohan S, Ul Haq MI, Ruggiero A. Tribocorrosion of 3D printed dental implants: An overview. J Taibah Univ Med Sci 2024; 19:644-663. [PMID: 38807965 PMCID: PMC11131088 DOI: 10.1016/j.jtumed.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/30/2024] [Accepted: 05/03/2024] [Indexed: 05/30/2024] Open
Abstract
With the advancements in dental science and the growing need for improved dental health, it has become imperative to develop new implant materials which possess better geometrical, mechanical, and physical properties. The oral environment is a corrosive environment and the relative motion between the teeth also makes the environment more hostile. Therefore, the combined corrosion and tribology commonly known as tribocorrosion of implants needs to be studied. The complex shapes of the dental implants and the high-performance requirements of these implants make manufacturing difficult by conventional manufacturing processes. With the advent of additive manufacturing or 3D-printing, the development of implants has become easy. However, the various requirements such as surface roughness, mechanical strength, and corrosion resistance further make the manufacturing of implants difficult. The current paper reviews the various studies related to3D-printed implants. Also, the paper tries to highlight the role of 3D-Printing can play in the area of dental implants. Further studies both experimental and numerical are needed to devise optimized conditions for 3D-printing implants to develop implants with improved mechanical, corrosion, and biological properties.
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Affiliation(s)
- Marco De Stefano
- Department of Industrial Engineering, University of Salerno, Fisciano, Italy
| | - Khushneet Singh
- School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, India
| | - Ankush Raina
- School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, India
| | - Sanjay Mohan
- School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, India
| | - Mir Irfan Ul Haq
- School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, India
| | - Alessandro Ruggiero
- Department of Industrial Engineering, University of Salerno, Fisciano, Italy
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6
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Raoufinia R, Rahimi HR, Saburi E, Moghbeli M. Advances and challenges of the cell-based therapies among diabetic patients. J Transl Med 2024; 22:435. [PMID: 38720379 PMCID: PMC11077715 DOI: 10.1186/s12967-024-05226-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 04/22/2024] [Indexed: 05/12/2024] Open
Abstract
Diabetes mellitus is a significant global public health challenge, with a rising prevalence and associated morbidity and mortality. Cell therapy has evolved over time and holds great potential in diabetes treatment. In the present review, we discussed the recent progresses in cell-based therapies for diabetes that provides an overview of islet and stem cell transplantation technologies used in clinical settings, highlighting their strengths and limitations. We also discussed immunomodulatory strategies employed in cell therapies. Therefore, this review highlights key progresses that pave the way to design transformative treatments to improve the life quality among diabetic patients.
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Affiliation(s)
- Ramin Raoufinia
- Noncommunicable Diseases Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid Reza Rahimi
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ehsan Saburi
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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7
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Naik SS, Torris A, Choudhury NR, Dutta NK, Sukumaran Nair K. Biodegradable and 3D printable lysine functionalized polycaprolactone scaffolds for tissue engineering applications. BIOMATERIALS ADVANCES 2024; 159:213816. [PMID: 38430722 DOI: 10.1016/j.bioadv.2024.213816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 02/19/2024] [Accepted: 02/24/2024] [Indexed: 03/05/2024]
Abstract
Tissue engineering (TE) has sparked interest in creating scaffolds with customizable properties and functional bioactive sites. However, due to limitations in medical practices and manufacturing technologies, it is challenging to replicate complex porous frameworks with appropriate architectures and bioactivity in vitro. To address these challenges, herein, we present a green approach that involves the amino acid (l-lysine) initiated polymerization of ɛ-caprolactone (CL) to produce modified polycaprolactone (PCL) with favorable active sites for TE applications. Further, to better understand the effect of morphology and porosity on cell attachment and proliferation, scaffolds of different geometries with uniform and interconnected pores are designed and fabricated, and their properties are evaluated in comparison with commercial PCL. The scaffold morphology and complex internal micro-architecture are imaged by micro-computed tomography (micro-CT), revealing pore size in the range of ~300-900 μm and porosity ranging from 30 to 70 %, while based on the geometry of scaffolds the compressive strength varied from 143 ± 19 to 214 ± 10 MPa. Additionally, the degradation profiles of fabricated scaffolds are found to be influenced by both the chemical nature and product design, where Lys-PCL-based scaffolds with better porosity and lower crystallinity degraded faster than commercial PCL scaffolds. According to in vitro studies, Lys-PCL scaffolds have produced an environment that is better for cell adhesion and proliferation. Moreover, the scaffold design affects the way cells interact; Lys-PCL with zigzag geometry has demonstrated superior in vitro vitality (>90 %) and proliferation in comparison to other designs. This study emphasizes the importance of enhancing bioactivity while meeting morphology and porosity requirements in the design of scaffolds for tissue engineering applications.
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Affiliation(s)
- Sonali S Naik
- Polymer Science and Engineering, CSIR-National Chemical Laboratory, Pune-411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India; School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Arun Torris
- Polymer Science and Engineering, CSIR-National Chemical Laboratory, Pune-411008, India
| | | | - Naba K Dutta
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Kiran Sukumaran Nair
- Polymer Science and Engineering, CSIR-National Chemical Laboratory, Pune-411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
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8
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Annaji M, Mita N, Poudel I, Boddu SHS, Fasina O, Babu RJ. Three-Dimensional Printing of Drug-Eluting Implantable PLGA Scaffolds for Bone Regeneration. Bioengineering (Basel) 2024; 11:259. [PMID: 38534533 DOI: 10.3390/bioengineering11030259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 02/29/2024] [Accepted: 03/04/2024] [Indexed: 03/28/2024] Open
Abstract
Despite rapid progress in tissue engineering, the repair and regeneration of bone defects remains challenging, especially for non-homogenous and complicated defects. We have developed and characterized biodegradable drug-eluting scaffolds for bone regeneration utilizing direct powder extrusion-based three-dimensional (3D) printing techniques. The PLGA scaffolds were fabricated using poly (lactic-co-glycolic acid) (PLGA) with inherent viscosities of 0.2 dl/g and 0.4 dl/g and ketoprofen. The effect of parameters such as the infill, geometry, and wall thickness of the drug carrier on the release kinetics of ketoprofen was studied. The release studies revealed that infill density significantly impacts the release performance, where 10% infill showed faster and almost complete release of the drug, whereas 50% infill demonstrated a sustained release. The Korsmeyer-Peppas model showed the best fit for release data irrespective of the PLGA molecular weight and infill density. It was demonstrated that printing parameters such as infill density, scaffold wall thickness, and geometry played an important role in controlling the release and, therefore, in designing customized drug-eluting scaffolds for bone regeneration.
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Affiliation(s)
- Manjusha Annaji
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | - Nur Mita
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
- Faculty of Pharmacy, Mulawarman University, Samarinda, Kalimantan Timur 75119, Indonesia
| | - Ishwor Poudel
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
| | - Sai H S Boddu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates
| | - Oladiran Fasina
- Department of Biosystems Engineering, Samuel Ginn College of Engineering, Auburn University, Auburn, AL 36849, USA
| | - R Jayachandra Babu
- Department of Drug Discovery and Development, Harrison College of Pharmacy, Auburn University, Auburn, AL 36849, USA
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9
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Pasini C, Pandini S, Ramorino G, Sartore L. Tailoring the properties of composite scaffolds with a 3D-Printed lattice core and a bioactive hydrogel shell for tissue engineering. J Mech Behav Biomed Mater 2024; 150:106305. [PMID: 38096608 DOI: 10.1016/j.jmbbm.2023.106305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 10/04/2023] [Accepted: 12/02/2023] [Indexed: 01/09/2024]
Abstract
The optimal performance of scaffolds for tissue engineering relies on a proper combination of their constituent biomaterials and on the design of their structure. In this work, composite scaffolds with a core-shell architecture are realized by grafting a gelatin-chitosan hydrogel onto a 3D-printed polylactic acid (PLA) core, aiming in particular at bone regeneration. This hydrogel was recently found to sustain osteogenic differentiation of mesenchymal stromal cells, leading to new bone tissue formation. Here, the integration with rigid PLA lattice structures provides improved mechanical support and finer control of strength and stiffness. The core is prepared by fused deposition modeling with the specific aim to study several lattice structures and thereby better tune the scaffold mechanical properties. In fact, the core architecture dictates the scaffold strength and stiffness, which are seen to match those of different types of bone tissue. For all lattice types, the hydrogel is found to penetrate throughout the entire core and to present highly interconnected pores for cell colonization. By varying the void volume fraction in the core it is possible to significantly change the bioactive shell content, as well as the mechanical properties, over a wide range of values. Looking for design guidelines, relationships between stiffness/strength and density are here outlined for scaffolds featuring different lattice parameters. Moreover, by acting on the core strut arrangement, scaffolds are reinforced along specific directions, as evaluated under compressive and bending loading conditions.
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Affiliation(s)
- C Pasini
- Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze, 38, 25123, Brescia, Italy
| | - S Pandini
- Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze, 38, 25123, Brescia, Italy.
| | - G Ramorino
- Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze, 38, 25123, Brescia, Italy
| | - L Sartore
- Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze, 38, 25123, Brescia, Italy
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10
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Ftoutou E, Allegue L, Marouani H, Hassine T, Fouad Y, Mrad H. Modeling of Effect of Infill Density Percentage on Rotating Bending Fatigue Behavior of Additive-Manufactured PLA Polymers. MATERIALS (BASEL, SWITZERLAND) 2024; 17:471. [PMID: 38276410 PMCID: PMC10820292 DOI: 10.3390/ma17020471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/08/2024] [Accepted: 01/11/2024] [Indexed: 01/27/2024]
Abstract
Nowadays, 3D PLA-printed parts are widely used in many applications, essentially using the fused filament fabrication technique. While the influence of printing parameters on quasi-static mechanical characterization has been extensively considered within the literature, there are limited accounts of this effect on fatigue performance. The two main aims of this research are first to investigate the effects of the infill density percentage on the fatigue life of dog-bone samples under rotating bending cycling loads, and second to model the fatigue life using Wöhler and Basquin models. The experiments exhibit a high variability of results, especially for low cyclic loads. The S-N curves show that the number of cycles at failure increases with the increase in the infill density percentage and decreases with the increase in loads. Investigations allow the formulation of each constant model as a function of the infill density percentage. The new fatigue model formulations exhibit good agreement with the experimental data. As an outcome of this study, the fatigue model for 3D-printed parts may be expressed as a function of the infill density percentage using fewer tests in the future and for other polymers used in fused filament fabrication.
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Affiliation(s)
- Ezzeddine Ftoutou
- Mechanical Engineering Laboratory, National Engineering School of Monastir, University of Monastir, Monastir 5019, Tunisia; (E.F.); (L.A.); (T.H.)
| | - Lamis Allegue
- Mechanical Engineering Laboratory, National Engineering School of Monastir, University of Monastir, Monastir 5019, Tunisia; (E.F.); (L.A.); (T.H.)
| | - Haykel Marouani
- Mechanical Engineering Laboratory, National Engineering School of Monastir, University of Monastir, Monastir 5019, Tunisia; (E.F.); (L.A.); (T.H.)
| | - Tarek Hassine
- Mechanical Engineering Laboratory, National Engineering School of Monastir, University of Monastir, Monastir 5019, Tunisia; (E.F.); (L.A.); (T.H.)
| | - Yasser Fouad
- Department of Applied Mechanical Engineering, College of Applied Engineering, Muzahimiyah Branch, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia;
| | - Hatem Mrad
- School of Engineering, University of Québec in Abitibi-Témiscamingue (UQAT), Rouyn-Noranda, QC J9X 5E4, Canada;
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11
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Giorgi Z, Veneruso V, Petillo E, Veglianese P, Perale G, Rossi F. Biomaterials and Cell Therapy Combination in Central Nervous System Treatments. ACS APPLIED BIO MATERIALS 2024; 7:80-98. [PMID: 38158393 PMCID: PMC10792669 DOI: 10.1021/acsabm.3c01058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 01/03/2024]
Abstract
Current pharmacological and surgical therapies for the central nervous system (CNS) show a limited capacity to reduce the damage progression; that together with the intrinsic limited capability of the CNS to regenerate greatly reduces the hopes of recovery. Among all the therapies proposed, the tissue engineering strategies supplemented with therapeutic stem cells remain the most promising. Neural tissue engineering strategies are based on the development of devices presenting optimal physical, chemical, and mechanical properties which, once inserted in the injured site, can support therapeutic cells, limiting the effect of a hostile environment and supporting regenerative processes. Thus, this review focuses on the employment of hydrogel and nanofibrous scaffolds supplemented with stem cells as promising therapeutic tools for the central and peripheral nervous systems in preclinical and clinical applications.
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Affiliation(s)
- Zoe Giorgi
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, piazza Leonardo da Vinci 32, 20133, Milan, Italy
| | - Valeria Veneruso
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
- Faculty
of Biomedical Sciences, University of Southern
Switzerland (USI), Via
Buffi 13, 6900 Lugano, Switzerland
| | - Emilia Petillo
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, piazza Leonardo da Vinci 32, 20133, Milan, Italy
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
| | - Pietro Veglianese
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
- Faculty
of Biomedical Sciences, University of Southern
Switzerland (USI), Via
Buffi 13, 6900 Lugano, Switzerland
| | - Giuseppe Perale
- Faculty
of Biomedical Sciences, University of Southern
Switzerland (USI), Via
Buffi 13, 6900 Lugano, Switzerland
- Ludwig
Boltzmann Institute for Experimental and Clinical Traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Filippo Rossi
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, piazza Leonardo da Vinci 32, 20133, Milan, Italy
- Faculty
of Biomedical Sciences, University of Southern
Switzerland (USI), Via
Buffi 13, 6900 Lugano, Switzerland
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12
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Pasini C, Pandini S, Re F, Ferroni M, Borsani E, Russo D, Sartore L. New Poly(lactic acid)-Hydrogel Core-Shell Scaffolds Highly Support MSCs' Viability, Proliferation and Osteogenic Differentiation. Polymers (Basel) 2023; 15:4631. [PMID: 38139883 PMCID: PMC10747776 DOI: 10.3390/polym15244631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/01/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Scaffolds for tissue engineering are expected to respond to a challenging combination of physical and mechanical requirements, guiding the research towards the development of novel hybrid materials. This study introduces innovative three-dimensional bioresorbable scaffolds, in which a stiff poly(lactic acid) lattice structure is meant to ensure temporary mechanical support, while a bioactive gelatin-chitosan hydrogel is incorporated to provide a better environment for cell adhesion and proliferation. The scaffolds present a core-shell structure, in which the lattice core is realized by additive manufacturing, while the shell is nested throughout the core by grafting and crosslinking a hydrogel forming solution. After subsequent freeze-drying, the hydrogel network forms a highly interconnected porous structure that completely envelops the poly(lactic acid) core. Thanks to this strategy, it is easy to tailor the scaffold properties for a specific target application by properly designing the lattice geometry and the core/shell ratio, which are found to significantly affect the scaffold mechanical performance and its bioresorption. Scaffolds with a higher core/shell ratio exhibit higher mechanical properties, whereas reducing the core/shell ratio results in higher values of bioactive hydrogel content. Hydrogel contents up to 25 wt% could be achieved while maintaining high compression stiffness (>200 MPa) and strength (>5 MPa), overall, within the range of values displayed by human bone tissue. In addition, mechanical properties remain stable after prolonged immersion in water at body temperature for several weeks. On the other hand, the hydrogel undergoes gradual and homogeneous degradation over time, but the core-shell integrity and structural stability are nevertheless maintained during at least 7-week hydrolytic degradation tests. In vitro experiments with human mesenchymal stromal cells reveal that the core-shell scaffolds are biocompatible, and their physical-mechanical properties and architecture are suitable to support cell growth and osteogenic differentiation, as demonstrated by hydroxyapatite formation. These results suggest that the bioresorbable core-shell scaffolds can be considered and further studied, in view of clinically relevant endpoints in bone regenerative medicine.
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Affiliation(s)
- Chiara Pasini
- Materials Science and Technology Laboratory, Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy; (C.P.); (S.P.)
| | - Stefano Pandini
- Materials Science and Technology Laboratory, Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy; (C.P.); (S.P.)
| | - Federica Re
- Unit of Blood Diseases and Bone Marrow Transplantation, Department of Clinical and Experimental Sciences, University of Brescia, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123 Brescia, Italy; (F.R.); (D.R.)
| | - Matteo Ferroni
- Department of Civil, Environmental, Architectural Engineering and Mathematics (DICATAM), University of Brescia, Via Valotti 9, 25123 Brescia, Italy;
- National Research Council (CNR)—Institute for Microelectronics and Microsystems, Bologna, Via Gobetti, 101, 40129 Bologna, Italy
| | - Elisa Borsani
- Division of Anatomy and Physiopathology, Department of Clinical and Experimental Sciences, University of Brescia, 25123 Brescia, Italy;
| | - Domenico Russo
- Unit of Blood Diseases and Bone Marrow Transplantation, Department of Clinical and Experimental Sciences, University of Brescia, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123 Brescia, Italy; (F.R.); (D.R.)
| | - Luciana Sartore
- Materials Science and Technology Laboratory, Department of Mechanical and Industrial Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy; (C.P.); (S.P.)
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13
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Sabzevari A, Rayat Pisheh H, Ansari M, Salati A. Progress in bioprinting technology for tissue regeneration. J Artif Organs 2023; 26:255-274. [PMID: 37119315 DOI: 10.1007/s10047-023-01394-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 04/09/2023] [Indexed: 05/01/2023]
Abstract
In recent years, due to the increase in diseases that require organ/tissue transplantation and the limited donor, on the other hand, patients have lost hope of recovery and organ transplantation. Regenerative medicine is one of the new sciences that promises a bright future for these patients by providing solutions to repair, improve function, and replace tissue. One of the technologies used in regenerative medicine is three-dimensional (3D) bioprinters. Bioprinting is a new strategy that is the basis for starting a global revolution in the field of medical sciences and has attracted much attention. 3D bioprinters use a combination of advanced biology and cell science, computer science, and materials science to create complex bio-hybrid structures for various applications. The capacity to use this technology can be demonstrated in regenerative medicine to make various connective tissues, such as skin, cartilage, and bone. One of the essential parts of a 3D bioprinter is the bio-ink. Bio-ink is a combination of biologically active molecules, cells, and biomaterials that make the printed product. In this review, we examine the main bioprinting strategies, such as inkjet printing, laser, and extrusion-based bioprinting, as well as some of their applications.
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Affiliation(s)
- Alireza Sabzevari
- Department of Biomedical Engineering, Meybod University, Meybod, Iran
| | | | - Mojtaba Ansari
- Department of Biomedical Engineering, Meybod University, Meybod, Iran.
| | - Amir Salati
- Tissue Engineering and Applied Cell Sciences Group, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
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14
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Qazzazie-Hauser A, Honnef K, Hanemann T. Development of Inkjet Printable Formulations Based on Polyorganosilazane and Divinylbenzene. Polymers (Basel) 2023; 15:4512. [PMID: 38231922 PMCID: PMC10708460 DOI: 10.3390/polym15234512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 01/19/2024] Open
Abstract
Within this work, ink formulations based on polyorganosilazane (OPSZ) and divinylbenzene (DVB) were developed to be processed by inkjet printing. The formulations were studied regarding their rheological, structural, and thermal properties. The rheological results show that the new formulations meet the requirements of the inkjet printer by showing both low viscosity (below 20 mPa∙s at printing temperature) and Newtonian flow behavior even at high shear rates. Additionally, the inks have surface tensions in the range of 21 to 26 mN/m2. First, printing experiments of single layers were successfully conducted and show that the developed formulations can be processed by inkjet printing. The inks were crosslinked by UV light and then pyrolyzed at 1100 °C resulting in a ceramic yield between 75 and 42%, depending on the ink formulation. The crosslinking behavior was studied via FTIR spectroscopy, and the results reveal that crosslinking occurs mainly via free-radical polymerization of the vinyl group. Furthermore, the results indicate that silicon carbonitride (SiCN) was formed after the pyrolysis. The results of the electrical properties of the amorphous ceramics differ in dependence on the amount of DVB in the formulation. A maximum electrical conductivity of 1.2 S/cm-1 was observed for a UV-cured sample with a high amount of DVB pyrolyzed at 1100 °C. The generation in electrical conductivity is given by the formation of free carbon derived most likely by DVB.
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Affiliation(s)
- Afnan Qazzazie-Hauser
- Laboratory for Materials Processing, University of Freiburg, 79110 Freiburg, Germany;
| | - Kirsten Honnef
- Laboratory for Materials Processing, University of Freiburg, 79110 Freiburg, Germany;
| | - Thomas Hanemann
- Laboratory for Materials Processing, University of Freiburg, 79110 Freiburg, Germany;
- Institute for Applied Materials, Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany
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15
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Wu X, Barner-Kowollik C. Fluorescence-readout as a powerful macromolecular characterisation tool. Chem Sci 2023; 14:12815-12849. [PMID: 38023522 PMCID: PMC10664555 DOI: 10.1039/d3sc04052f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/10/2023] [Indexed: 12/01/2023] Open
Abstract
The last few decades have witnessed significant progress in synthetic macromolecular chemistry, which can provide access to diverse macromolecules with varying structural complexities, topology and functionalities, bringing us closer to the aim of controlling soft matter material properties with molecular precision. To reach this goal, the development of advanced analytical techniques, allowing for micro-, molecular level and real-time investigation, is essential. Due to their appealing features, including high sensitivity, large contrast, fast and real-time response, as well as non-invasive characteristics, fluorescence-based techniques have emerged as a powerful tool for macromolecular characterisation to provide detailed information and give new and deep insights beyond those offered by commonly applied analytical methods. Herein, we critically examine how fluorescence phenomena, principles and techniques can be effectively exploited to characterise macromolecules and soft matter materials and to further unravel their constitution, by highlighting representative examples of recent advances across major areas of polymer and materials science, ranging from polymer molecular weight and conversion, architecture, conformation to polymer self-assembly to surfaces, gels and 3D printing. Finally, we discuss the opportunities for fluorescence-readout to further advance the development of macromolecules, leading to the design of polymers and soft matter materials with pre-determined and adaptable properties.
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Affiliation(s)
- Xingyu Wu
- School of Chemistry and Physics, Centre for Materials Science, Queensland University of Technology (QUT) 2 George Street Brisbane QLD 4000 Australia
| | - Christopher Barner-Kowollik
- School of Chemistry and Physics, Centre for Materials Science, Queensland University of Technology (QUT) 2 George Street Brisbane QLD 4000 Australia
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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16
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Christou CD, Vasileiadou S, Sotiroudis G, Tsoulfas G. Three-Dimensional Printing and Bioprinting in Renal Transplantation and Regenerative Medicine: Current Perspectives. J Clin Med 2023; 12:6520. [PMID: 37892658 PMCID: PMC10607284 DOI: 10.3390/jcm12206520] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 09/29/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
For patients with end-stage kidney disease (ESKD), renal transplantation is the treatment of choice, constituting the most common solid organ transplantation. This study aims to provide a comprehensive review regarding the application of three-dimensional (3D) printing and bioprinting in renal transplantation and regenerative medicine. Specifically, we present studies where 3D-printed models were used in the training of surgeons through renal transplantation simulations, in patient education where patients acquire a higher understanding of their disease and the proposed operation, in the preoperative planning to facilitate decision-making, and in fabricating customized, tools and devices. Three-dimensional-printed models could transform how surgeons train by providing surgical rehearsal platforms across all surgical specialties, enabling training with tissue realism and anatomic precision. The use of 3D-printed models in renal transplantations has shown a positive impact on surgical outcomes, including the duration of the operation and the intraoperative blood loss. Regarding 3D bioprinting, the technique has shown promising results, especially in the field of microfluidic devices, with the development of tissue demonstrating proximal tubules, glomerulus, and tubuloinerstitium function, and in renal organoid development. Such models can be applied for renal disease modeling, drug development, and renal regenerative medicine.
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Affiliation(s)
- Chrysanthos D. Christou
- Department of Transplantation Surgery, Hippokration General Hospital, Aristotle University of Thessaloniki, 54642 Thessaloniki, Greece; (S.V.); (G.S.); (G.T.)
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17
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Shen KH, Chiu TH, Teng KC, Yu J, Yeh YC. Fabrication of triple-crosslinked gelatin/alginate hydrogels for controlled release applications. Int J Biol Macromol 2023; 250:126133. [PMID: 37543263 DOI: 10.1016/j.ijbiomac.2023.126133] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 07/27/2023] [Accepted: 08/02/2023] [Indexed: 08/07/2023]
Abstract
Hydrogels have been demonstrated as smart drug carriers to recognize the tumor microenvironment for cancer treatment, where the dynamic crosslinks in the hydrogel network contribute to the stimuli-responsive features but also result in poor stability and weak mechanical property of the hydrogels. Here, phenylboronic acid-grafted polyethyleneimine (PBA-PEI)-modified gelatin (PPG) was synthesized to crosslink alginate dialdehyde (ADA) through imine bonds and boronate ester bonds, and then calcium ions (Ca2+) were added to introduce the third calcium-carboxylate crosslinking in the network to form the triple-crosslinked PPG/ADA-Ca2+ hydrogels. Given the three types of dynamic bonds in the network, PPG/ADA-Ca2+ hydrogels possessed a self-healing manner, stimuli-responsiveness, and better mechanical properties compared to single- or double-crosslinked hydrogels. The controlled release capability of PPG/ADA-Ca2+ hydrogels was also demonstrated, showing the encapsulated molecules can be rapidly released from the hydrogel network in the presence of hydrogen peroxide while the release rate can be slowed down at acidic pH. Furthermore, PPG/ADA-Ca2+ hydrogels presented selected cytotoxicity and drug delivery to cancer cells due to the regulated degradation by the cellular microenvironment. Taken together, PPG/ADA-Ca2+ hydrogels have been demonstrated as promising biomaterials with multiple desirable properties and dynamic features to perform controlled molecule release for biomedical applications.
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Affiliation(s)
- Ke-Han Shen
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Ting-Hsiang Chiu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Kuang-Chih Teng
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Jiashing Yu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Cheun Yeh
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan.
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18
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Chu WS, Park H, Moon S. Novel Fabrication of 3-D Cell Laden Micro-Patterned Porous Structure on Cell Growth and Proliferation by Layered Manufacturing. Bioengineering (Basel) 2023; 10:1092. [PMID: 37760194 PMCID: PMC10526113 DOI: 10.3390/bioengineering10091092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/14/2023] [Accepted: 09/16/2023] [Indexed: 09/29/2023] Open
Abstract
This study focuses on developing and characterizing a novel 3-dimensional cell-laden micro-patterned porous structure from a mechanical engineering perspective. Tissue engineering holds great promise for repairing damaged organs but faces challenges related to cell viability, biocompatibility, and mechanical strength. This research aims to overcome these limitations by utilizing gelatin methacrylate hydrogel as a scaffold material and employing a photolithography technique for precise patterned fabrication. The mechanical properties of the structure are of particular interest in this study. We evaluate its ability to withstand external forces through compression tests, which provide insights into its strength and stability. Additionally, structural integrity is assessed over time to determine its performance in in vitro and potential in vivo environments. We investigate cell viability and proliferation within the micro-patterned porous structure to evaluate the biological aspects. MTT assays and immunofluorescence staining are employed to analyze the metabolic activity and distribution pattern of cells, respectively. These assessments help us understand the effectiveness of the structure in supporting cell growth and tissue regeneration. The findings of this research contribute to the field of tissue engineering and provide valuable insights for mechanical engineers working on developing scaffolds and structures for regenerative medicine. By addressing challenges related to cell viability, biocompatibility, and mechanical strength, we move closer to realizing clinically viable tissue engineering solutions. The novel micro-patterned porous structure holds promise for applications in artificial organ development and lays the foundation for future advancements in large soft tissue construction.
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Affiliation(s)
- Won-Shik Chu
- Department of Mechanical Convergence Engineering, Gyeongsang National University, Changwon 51391, Gyeongsangnam-do, Republic of Korea; (W.-S.C.); (H.P.)
| | - Hyeongryool Park
- Department of Mechanical Convergence Engineering, Gyeongsang National University, Changwon 51391, Gyeongsangnam-do, Republic of Korea; (W.-S.C.); (H.P.)
| | - Sangjun Moon
- Department of Mechanical Convergence Engineering, Gyeongsang National University, Changwon 51391, Gyeongsangnam-do, Republic of Korea; (W.-S.C.); (H.P.)
- Cyberneticsimagingsystems Co., Ltd., Changwon 51391, Gyeongsangnam-do, Republic of Korea
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19
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Agarwal N, Solanki VS, Ameta KL, Yadav VK, Gupta P, Wanale SG, Shrivastava R, Soni A, Sahoo DK, Patel A. 4-Dimensional printing: exploring current and future capabilities in biomedical and healthcare systems-a Concise review. Front Bioeng Biotechnol 2023; 11:1251425. [PMID: 37675401 PMCID: PMC10478005 DOI: 10.3389/fbioe.2023.1251425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 08/10/2023] [Indexed: 09/08/2023] Open
Abstract
4-Dimensional Printing (4DP) is the latest concept in the pharmacy and biomedical segment with enormous potential in dosage from personalization and medication designing, which adopts time as the fourth dimension, giving printed structures the flexibility to modify their morphology. It can be defined as the fabrication in morphology with the help of smart/intelligent materials like polymers that permit the final object to alter its properties, shape, or function in response to external stimuli such as heat, light, pH, and moisture. The applications of 4DP in biomedicines and healthcare are explored with a focus on tissue engineering, artificial organs, drug delivery, pharmaceutical and biomedical field, etc. In the medical treatments and pharmaceutical field 4DP is paving the way with unlimited potential applications; however, its mainstream use in healthcare and medical treatments is highly dependent on future developments and thorough research findings. Therefore, previous innovations with smart materials are likely to act as precursors of 4DP in many industries. This review highlights the most recent applications of 4DP technology and smart materials in biomedical and healthcare fields which can show a better perspective of 4DP applications in the future. However, in view of the existing limitations, major challenges of this technology must be addressed along with some suggestions for future research. We believe that the application of proper regulatory constraints with 4DP technology would pave the way for the next technological revolution in the biomedical and healthcare sectors.
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Affiliation(s)
- Neha Agarwal
- Department of Chemistry, Navyug Kanya Mahavidyalaya, University of Lucknow, Lucknow, India
| | - Vijendra Singh Solanki
- Department of Chemistry, Institute of Science and Research (ISR), IPS Academy, Indore, India
| | - Keshav Lalit Ameta
- Centre for Applied Chemistry, School of Applied Material Sciences, Central University of Gujarat, Gujarat, India
| | - Virendra Kumar Yadav
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, India
| | - Premlata Gupta
- Department of Chemistry, Institute of Science and Research (ISR), IPS Academy, Indore, India
| | | | - Ruchi Shrivastava
- Department of Chemistry, Institute of Science and Research (ISR), IPS Academy, Indore, India
| | - Anjali Soni
- Department of Chemistry, Medicaps University, Indore, India
| | - Dipak Kumar Sahoo
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Ashish Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, India
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20
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Lee S, Choi G, Yang YJ, Joo KI, Cha HJ. Visible light-crosslinkable tyramine-conjugated alginate-based microgel bioink for multiple cell-laden 3D artificial organ. Carbohydr Polym 2023; 313:120895. [PMID: 37182936 DOI: 10.1016/j.carbpol.2023.120895] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 03/23/2023] [Accepted: 04/07/2023] [Indexed: 05/16/2023]
Abstract
While the natural carbohydrate alginate has enabled effective three-dimensional (3D) extrusion bioprinting, it still suffers from some issues such as low printability and resolution and limited cellular function due to ionic crosslinking dependency. Here, we prepared a harmless visible light-based photocrosslinkable alginate by chemically bonding tyrosine-like residues onto alginate chains to propose a new microgel manufacturing system for the development of 3D-printed bioinks. The photocrosslinkable tyramine-conjugated alginate microgel achieved both higher cell viability and printing resolution compared to the bulk gel form. This alginate-based jammed granular microgel bioink showed excellent 3D bioprinting ability with maintained structural stability. As a biocompatible material, the developed multiple cell-loaded photocrosslinkable alginate-based microgel bioink provided excellent proliferation and migration abilities of laden living cells, providing an effective strategy to construct implantable functional artificial organ structures for 3D bioprinting-based tissue engineering.
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Affiliation(s)
- Sangmin Lee
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Geunho Choi
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Yun Jung Yang
- Department of Biological Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Kye Il Joo
- Division of Chemical Engineering and Materials Science, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Hyung Joon Cha
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.
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21
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Juraski AC, Sharma S, Sparanese S, da Silva VA, Wong J, Laksman Z, Flannigan R, Rohani L, Willerth SM. 3D bioprinting for organ and organoid models and disease modeling. Expert Opin Drug Discov 2023; 18:1043-1059. [PMID: 37431937 DOI: 10.1080/17460441.2023.2234280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 07/05/2023] [Indexed: 07/12/2023]
Abstract
INTRODUCTION 3D printing, a versatile additive manufacturing technique, has diverse applications ranging from transportation, rapid prototyping, clean energy, and medical devices. AREAS COVERED The authors focus on how 3D printing technology can enhance the drug discovery process through automating tissue production that enables high-throughput screening of potential drug candidates. They also discuss how the 3D bioprinting process works and what considerations to address when using this technology to generate cell laden constructs for drug screening as well as the outputs from such assays necessary for determining the efficacy of potential drug candidates. They focus on how bioprinting how has been used to generate cardiac, neural, and testis tissue models, focusing on bio-printed 3D organoids. EXPERT OPINION The next generation of 3D bioprinted organ model holds great promises for the field of medicine. In terms of drug discovery, the incorporation of smart cell culture systems and biosensors into 3D bioprinted models could provide highly detailed and functional organ models for drug screening. By addressing current challenges of vascularization, electrophysiological control, and scalability, researchers can obtain more reliable and accurate data for drug development, reducing the risk of drug failures during clinical trials.
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Affiliation(s)
- Amanda C Juraski
- Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, Victoria BC, Canada
- Department of Chemical Engineering, Polytechnic School, University of Sao Paulo, Sao Paulo, Brazil
| | - Sonali Sharma
- Faculty of Medicine, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Sydney Sparanese
- Faculty of Medicine, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
- Department of Urologic Sciences, University of British Columbia, Vancouver BC, Canada
| | - Victor A da Silva
- Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, Victoria BC, Canada
| | - Julie Wong
- Department of Urologic Sciences, University of British Columbia, Vancouver BC, Canada
| | - Zachary Laksman
- Faculty of Medicine, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Ryan Flannigan
- Department of Urologic Sciences, University of British Columbia, Vancouver BC, Canada
| | - Leili Rohani
- Faculty of Medicine, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Stephanie M Willerth
- Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, Victoria BC, Canada
- Faculty of Medicine, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
- Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, Victoria, BC, Canada
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22
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Laubach M, Hildebrand F, Suresh S, Wagels M, Kobbe P, Gilbert F, Kneser U, Holzapfel BM, Hutmacher DW. The Concept of Scaffold-Guided Bone Regeneration for the Treatment of Long Bone Defects: Current Clinical Application and Future Perspective. J Funct Biomater 2023; 14:341. [PMID: 37504836 PMCID: PMC10381286 DOI: 10.3390/jfb14070341] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/31/2023] [Accepted: 06/21/2023] [Indexed: 07/29/2023] Open
Abstract
The treatment of bone defects remains a challenging clinical problem with high reintervention rates, morbidity, and resulting significant healthcare costs. Surgical techniques are constantly evolving, but outcomes can be influenced by several parameters, including the patient's age, comorbidities, systemic disorders, the anatomical location of the defect, and the surgeon's preference and experience. The most used therapeutic modalities for the regeneration of long bone defects include distraction osteogenesis (bone transport), free vascularized fibular grafts, the Masquelet technique, allograft, and (arthroplasty with) mega-prostheses. Over the past 25 years, three-dimensional (3D) printing, a breakthrough layer-by-layer manufacturing technology that produces final parts directly from 3D model data, has taken off and transformed the treatment of bone defects by enabling personalized therapies with highly porous 3D-printed implants tailored to the patient. Therefore, to reduce the morbidities and complications associated with current treatment regimens, efforts have been made in translational research toward 3D-printed scaffolds to facilitate bone regeneration. Three-dimensional printed scaffolds should not only provide osteoconductive surfaces for cell attachment and subsequent bone formation but also provide physical support and containment of bone graft material during the regeneration process, enhancing bone ingrowth, while simultaneously, orthopaedic implants supply mechanical strength with rigid, stable external and/or internal fixation. In this perspective review, we focus on elaborating on the history of bone defect treatment methods and assessing current treatment approaches as well as recent developments, including existing evidence on the advantages and disadvantages of 3D-printed scaffolds for bone defect regeneration. Furthermore, it is evident that the regulatory framework and organization and financing of evidence-based clinical trials remains very complex, and new challenges for non-biodegradable and biodegradable 3D-printed scaffolds for bone regeneration are emerging that have not yet been sufficiently addressed, such as guideline development for specific surgical indications, clinically feasible design concepts for needed multicentre international preclinical and clinical trials, the current medico-legal status, and reimbursement. These challenges underscore the need for intensive exchange and open and honest debate among leaders in the field. This goal can be addressed in a well-planned and focused stakeholder workshop on the topic of patient-specific 3D-printed scaffolds for long bone defect regeneration, as proposed in this perspective review.
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Affiliation(s)
- Markus Laubach
- Australian Research Council (ARC) Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D Innovation), Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Biomedical Technologies, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377 Munich, Germany
| | - Frank Hildebrand
- Department of Orthopaedics, Trauma and Reconstructive Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Sinduja Suresh
- Australian Research Council (ARC) Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D Innovation), Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Biomedical Technologies, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia
| | - Michael Wagels
- Department of Plastic Surgery, Princess Alexandra Hospital, Woolloongabba, QLD 4102, Australia;
- The Herston Biofabrication Institute, The University of Queensland, Herston, QLD 4006, Australia
- Southside Clinical Division, School of Medicine, University of Queensland, Woolloongabba, QLD 4102, Australia
- Department of Plastic and Reconstructive Surgery, Queensland Children’s Hospital, South Brisbane, QLD 4101, Australia
- The Australian Centre for Complex Integrated Surgical Solutions, Woolloongabba, QLD 4102, Australia
| | - Philipp Kobbe
- Department of Orthopaedics, Trauma and Reconstructive Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Fabian Gilbert
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377 Munich, Germany
| | - Ulrich Kneser
- Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, 67071 Ludwigshafen, Germany
| | - Boris M. Holzapfel
- Department of Orthopaedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377 Munich, Germany
| | - Dietmar W. Hutmacher
- Australian Research Council (ARC) Training Centre for Multiscale 3D Imaging, Modelling and Manufacturing (M3D Innovation), Queensland University of Technology, Brisbane, QLD 4000, Australia
- Centre for Biomedical Technologies, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4059, Australia
- Max Planck Queensland Centre (MPQC) for the Materials Science of Extracellular Matrices, Queensland University of Technology, Brisbane, QLD 4000, Australia
- ARC Training Centre for Cell and Tissue Engineering Technologies (CTET), Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
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23
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Tong L, Pu X, Liu Q, Li X, Chen M, Wang P, Zou Y, Lu G, Liang J, Fan Y, Zhang X, Sun Y. Nanostructured 3D-Printed Hybrid Scaffold Accelerates Bone Regeneration by Photointegrating Nanohydroxyapatite. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2300038. [PMID: 36905235 PMCID: PMC10161056 DOI: 10.1002/advs.202300038] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/08/2023] [Indexed: 05/06/2023]
Abstract
Nanostructured biomaterials that replicate natural bone architecture are expected to facilitate bone regeneration. Here, nanohydroxyapatite (nHAp) with vinyl surface modification is acquired by silicon-based coupling agent and photointegrated with methacrylic anhydride-modified gelatin to manufacture a chemically integrated 3D-printed hybrid bone scaffold (75.6 wt% solid content). This nanostructured procedure significantly increases its storage modulus by 19.43-fold (79.2 kPa) to construct a more stable mechanical structure. Furthermore, biofunctional hydrogel with biomimetic extracellular matrix is anchored onto the filament of 3D-printed hybrid scaffold (HGel-g-nHAp) by polyphenol-mediated multiple chemical reactions, which contributes to initiate early osteogenesis and angiogenesis by recruiting endogenous stem cells in situ. Significant ectopic mineral deposition is also observed in subcutaneously implanted nude mice with storage modulus enhancement of 25.3-fold after 30 days. Meanwhile, HGel-g-nHAp realizes substantial bone reconstruction in the rabbit cranial defect model, achieving 61.3% breaking load strength and 73.1% bone volume fractions in comparison to natural cranium 15 weeks after implantation. This optical integration strategy of vinyl modified nHAp provides a prospective structural design for regenerative 3D-printed bone scaffold.
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Affiliation(s)
- Lei Tong
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
| | - Xiaocong Pu
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
- Sichuan Testing Center of Medical Devices, Sichuan Institute for Drug Control, NMPA Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, 8# Xinwen Road, Chengdu, 611731, China
| | - Quanying Liu
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
| | - Xing Li
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
| | - Manyu Chen
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
| | - Peilei Wang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
| | - Yaping Zou
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
| | - Gonggong Lu
- Department of Neurosurgery, West China Hospital, Sichuan University, 37# Guoxue Lane, Chengdu, 610041, China
| | - Jie Liang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
- Sichuan Testing Center for Biomaterials and Medical Devices, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
| | - Yujiang Fan
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
| | - Yong Sun
- National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, 610064, China
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24
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Baumer V, Gunn E, Riegle V, Bailey C, Shonkwiler C, Prawel D. Robocasting of Ceramic Fischer-Koch S Scaffolds for Bone Tissue Engineering. J Funct Biomater 2023; 14:jfb14050251. [PMID: 37233361 DOI: 10.3390/jfb14050251] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/23/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
Triply Periodic Minimal Surfaces (TPMS) are promising structures for bone tissue engineering scaffolds due to their relatively high mechanical energy absorption, smoothly interconnected porous structure, scalable unit cell topology, and relatively high surface area per volume. Calcium phosphate-based materials, such as hydroxyapatite and tricalcium phosphate, are very popular scaffold biomaterials due to their biocompatibility, bioactivity, compositional similarities to bone mineral, non-immunogenicity, and tunable biodegradation. Their brittle nature can be partially mitigated by 3D printing them in TPMS topologies such as gyroids, which are widely studied for bone regeneration, as evidenced by their presence in popular 3D-printing slicers, modeling systems, and topology optimization tools. Although structural and flow simulations have predicted promising properties of other TPMS scaffolds, such as Fischer-Koch S (FKS), to the best of our knowledge, no one has explored these possibilities for bone regeneration in the laboratory. One reason for this is that fabrication of the FKS scaffolds, such as by 3D printing, is challenged by a lack of algorithms to model and slice this topology for use by low-cost biomaterial printers. This paper presents an open-source software algorithm that we developed to create 3D-printable FKS and gyroid scaffold cubes, with a framework that can accept any continuous differentiable implicit function. We also report on our successful 3D printing of hydroxyapatite FKS scaffolds using a low-cost method that combines robocasting with layer-wise photopolymerization. Dimensional accuracy, internal microstructure, and porosity characteristics are also presented, demonstrating promising potential for the 3D printing of TPMS ceramic scaffolds for bone regeneration.
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Affiliation(s)
- Vail Baumer
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Erin Gunn
- Department of Computer Science, Colorado State University, Fort Collins, CO 80523, USA
| | - Valerie Riegle
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Claire Bailey
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
| | - Clayton Shonkwiler
- Department of Mathematics, Colorado State University, Fort Collins, CO 80523, USA
| | - David Prawel
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO 80523, USA
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
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25
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Słoma M. 3D printed electronics with nanomaterials. NANOSCALE 2023; 15:5623-5648. [PMID: 36880539 DOI: 10.1039/d2nr06771d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
A large variety of printing, deposition and writing techniques have been incorporated to fabricate electronic devices in the last decades. This approach, printed electronics, has gained great interest in research and practical applications and is successfully fuelling the growth in materials science and technology. On the other hand, a new player is emerging, additive manufacturing, called 3D printing, introducing a new capability to create geometrically complex constructs with low cost and minimal material waste. Having such tremendous technology in our hands, it was just a matter of time to combine advances of printed electronics technology for the fabrication of unique 3D structural electronics. Nanomaterial patterning with additive manufacturing techniques can enable harnessing their nanoscale properties and the fabrication of active structures with unique electrical, mechanical, optical, thermal, magnetic and biological properties. In this paper, we will briefly review the properties of selected nanomaterials suitable for electronic applications and look closer at the current achievements in the synergistic integration of nanomaterials with additive manufacturing technologies to fabricate 3D printed structural electronics. The focus is fixed strictly on techniques allowing as much as possible fabrication of spatial 3D objects, or at least conformal ones on 3D printed substrates, while only selected techniques are adaptable for 3D printing of electronics. Advances in the fabrication of conductive paths and circuits, passive components, antennas, active and photonic components, energy devices, microelectromechanical systems and sensors are presented. Finally, perspectives for development with new nanomaterials, multimaterial and hybrid techniques, bioelectronics, integration with discrete components and 4D-printing are briefly discussed.
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Affiliation(s)
- Marcin Słoma
- Micro- and Nanotechnology Division, Institute of Metrology and Biomedical Engineering, Faculty of Mechatronics, Warsaw University of Technology, 8 Sw. A Boboli St., 02-525 Warsaw, Poland.
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26
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Bazan A, Turek P, Zakręcki A. Influence of Antibacterial Coating and Mechanical and Chemical Treatment on the Surface Properties of PA12 Parts Manufactured with SLS and MJF Techniques in the Context of Medical Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:2405. [PMID: 36984288 PMCID: PMC10051754 DOI: 10.3390/ma16062405] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 06/18/2023]
Abstract
Additive manufacturing (AM) is a rapidly growing branch of manufacturing techniques used, among others, in the medical industry. New machines and materials and additional processing methods are improved or developed. Due to the dynamic development of post-processing and its relative novelty, it has not yet been widely described in the literature. This study focuses on the surface topography (parameters Sa, Sz, Sdq, Sds, Str, Sdr) of biocompatible polyamide 12 (PA12) samples made by selective laser sintering (SLS) and multi jet fusion (MJF). The surfaces of the samples were modified by commercial methods: four types of smoothing treatments (two mechanical and two chemical), and two antibacterial coatings. The smoothing treatment decreased the values of all analyzed topography parameters. On average, the Sa of the SLS samples was 33% higher than that of the MJF samples. After mechanical treatment, Sa decreased by 42% and after chemical treatment by 80%. The reduction in Sdq and Sdr is reflected in a higher surface gloss. One antibacterial coating did not significantly modify the surface topography. The other coating had a smoothing effect on the surface. The results of the study can help in the development of manufacturing methodologies for parts made of PA12, e.g., in the medical industry.
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Affiliation(s)
- Anna Bazan
- Faculty of Mechanical Engineering and Areonautics, Rzeszów University of Technology, Powstańców Warszawy 12, 35-959 Rzeszów, Poland
| | - Paweł Turek
- Faculty of Mechanical Engineering and Areonautics, Rzeszów University of Technology, Powstańców Warszawy 12, 35-959 Rzeszów, Poland
| | - Andrzej Zakręcki
- MEDIPRINTIC Sp. Z.O.O., Wojska Polskiego 9, 39-300 Mielec, Poland
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27
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Nizamoglu M, Burgess JK. Current possibilities and future opportunities provided by three-dimensional lung ECM-derived hydrogels. Front Pharmacol 2023; 14:1154193. [PMID: 36969853 PMCID: PMC10034771 DOI: 10.3389/fphar.2023.1154193] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 02/28/2023] [Indexed: 03/11/2023] Open
Abstract
Disruption of the complex interplay between cells and extracellular matrix (ECM), the scaffold that provides support, biochemical and biomechanical cues, is emerging as a key element underlying lung diseases. We readily acknowledge that the lung is a flexible, relatively soft tissue that is three dimensional (3D) in structure, hence a need exists to develop in vitro model systems that reflect these properties. Lung ECM-derived hydrogels have recently emerged as a model system that mimics native lung physiology; they contain most of the plethora of biochemical components in native lung, as well as reflecting the biomechanics of native tissue. Research investigating the contribution of cell:matrix interactions to acute and chronic lung diseases has begun adopting these models but has yet to harness their full potential. This perspective article provides insight about the latest advances in the development, modification, characterization and utilization of lung ECM-derived hydrogels. We highlight some opportunities for expanding research incorporating lung ECM-derived hydrogels and potential improvements for the current approaches. Expanding the capabilities of investigations using lung ECM-derived hydrogels is positioned at a cross roads of disciplines, the path to new and innovative strategies for unravelling disease underlying mechanisms will benefit greatly from interdisciplinary approaches. While challenges need to be addressed before the maximum potential can be unlocked, with the rapid pace at which this field is evolving, we are close to a future where faster, more efficient and safer drug development targeting the disrupted 3D microenvironment is possible using lung ECM-derived hydrogels.
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Affiliation(s)
- Mehmet Nizamoglu
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, Netherlands
| | - Janette K. Burgess
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Groningen, Netherlands
- University of Groningen, University Medical Center Groningen, W.J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, Groningen, Netherlands
- *Correspondence: Janette K. Burgess,
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28
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Numerical simulation and printability analysis of fused deposition modeling with dual-temperature control. Biodes Manuf 2023. [DOI: 10.1007/s42242-023-00239-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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29
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Zhang Z, Xie D, Lv F, Liu R, Yang Y, Wang L, Wu G, Wang C, Shen L, Tian Z. Intelligent geometry compensation for additive manufactured oral maxillary stent by genetic algorithm and backpropagation network. Comput Biol Med 2023; 157:106716. [PMID: 36905868 DOI: 10.1016/j.compbiomed.2023.106716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 02/09/2023] [Accepted: 02/26/2023] [Indexed: 03/03/2023]
Abstract
Recently, laser powder bed fusion (LPBF) has shown great potential in advanced manufacturing. However, the rapid melting and re-solidification of the molten pool in LPBF leads to the distortion of parts, especially thin-walled parts. The traditional geometric compensation method, which is used to overcome this problem, is simply based on mapping compensation, with the general effect of distortion reduction. In this study, we used a genetic algorithm (GA) and backpropagation (BP) network to optimize the geometric compensation of Ti6Al4V thin-walled parts fabricated by LPBF. The GA-BP network method can generate free-form thin-walled structures with enhanced geometric freedom for compensation. For the GA-BP network training, an arc thin-walled structure was designed and printed by LBPF and measured via optical scanning measurements. The final distortion of the compensated arc thin-walled part based on GA-BP was reduced by 87.9% compared with PSO-BP and mapping method. The effectiveness of this GA-BP compensation method is further evaluated in an application case using new data points, and the result shows that the final distortion of the oral maxillary stent was reduced by 71%. In summary, the GA-BP-based geometric compensation proposed in this study can better reduce the distortion of thin-walled parts with higher time and cost efficiencies.
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Affiliation(s)
- Zifan Zhang
- College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Institute of Additive Manufacturing (3D Printing), Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Deqiao Xie
- College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Institute of Additive Manufacturing (3D Printing), Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Fei Lv
- College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Institute of Additive Manufacturing (3D Printing), Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Ruikang Liu
- College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Institute of Additive Manufacturing (3D Printing), Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Youwen Yang
- Institute of Bioadditive Manufacturing, Jiangxi University of Science and Technology, Nanchang, 330044, China
| | - Lin Wang
- College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Institute of Additive Manufacturing (3D Printing), Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Nanjing Chamlion Laser Technology Co., Ltd, Nanjing, 210012, China
| | - Guofeng Wu
- Stomatological Digital Engineering Center, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Changjiang Wang
- Department of Engineering and Design, University of Sussex, Brighton, BN1 9RH, United Kingdom
| | - Lida Shen
- College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Institute of Additive Manufacturing (3D Printing), Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China.
| | - Zongjun Tian
- College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China; Institute of Additive Manufacturing (3D Printing), Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China.
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30
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Sedighi M, Shrestha N, Mahmoudi Z, Khademi Z, Ghasempour A, Dehghan H, Talebi SF, Toolabi M, Préat V, Chen B, Guo X, Shahbazi MA. Multifunctional Self-Assembled Peptide Hydrogels for Biomedical Applications. Polymers (Basel) 2023; 15:polym15051160. [PMID: 36904404 PMCID: PMC10007692 DOI: 10.3390/polym15051160] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 03/02/2023] Open
Abstract
Self-assembly is a growth mechanism in nature to apply local interactions forming a minimum energy structure. Currently, self-assembled materials are considered for biomedical applications due to their pleasant features, including scalability, versatility, simplicity, and inexpensiveness. Self-assembled peptides can be applied to design and fabricate different structures, such as micelles, hydrogels, and vesicles, by diverse physical interactions between specific building blocks. Among them, bioactivity, biocompatibility, and biodegradability of peptide hydrogels have introduced them as versatile platforms in biomedical applications, such as drug delivery, tissue engineering, biosensing, and treating different diseases. Moreover, peptides are capable of mimicking the microenvironment of natural tissues and responding to internal and external stimuli for triggered drug release. In the current review, the unique characteristics of peptide hydrogels and recent advances in their design, fabrication, as well as chemical, physical, and biological properties are presented. Additionally, recent developments of these biomaterials are discussed with a particular focus on their biomedical applications in targeted drug delivery and gene delivery, stem cell therapy, cancer therapy and immune regulation, bioimaging, and regenerative medicine.
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Affiliation(s)
- Mahsa Sedighi
- Department of Pharmaceutics and Nanotechnology, School of Pharmacy, Birjand University of Medical Sciences, Birjand 9717853076, Iran
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand 9717853076, Iran
| | - Neha Shrestha
- Advanced Drug Delivery and Biomaterials, Louvain Drug Research Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
- Department of Biomedicine and Translational Research, Research Institute for Bioscience and Biotechnology, Kathmandu P.O. Box 7731, Nepal
| | - Zahra Mahmoudi
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan 6517838636, Iran
| | - Zahra Khademi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948954, Iran
| | - Alireza Ghasempour
- Student Research Committee, Birjand University of Medical Sciences, Birjand 9717853076, Iran
| | - Hamideh Dehghan
- Student Research Committee, Birjand University of Medical Sciences, Birjand 9717853076, Iran
| | - Seyedeh Fahimeh Talebi
- Student Research Committee, Birjand University of Medical Sciences, Birjand 9717853076, Iran
| | - Maryam Toolabi
- Department of Biomedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Véronique Préat
- Advanced Drug Delivery and Biomaterials, Louvain Drug Research Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Bozhi Chen
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xindong Guo
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Correspondence: (X.G.); (M.-A.S.)
| | - Mohammad-Ali Shahbazi
- Department of Biomedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
- W.J. Kolff Institute for Biomedical Engineering and Materials Science, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
- Correspondence: (X.G.); (M.-A.S.)
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31
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Li J, Li J, Yang Y, He X, Wei X, Tan Q, Wang Y, Xu S, Chang S, Liu W. Biocompatibility and osteointegration capability of β-TCP manufactured by stereolithography 3D printing: In vitro study. Open Life Sci 2023; 18:20220530. [PMID: 36742452 PMCID: PMC9883693 DOI: 10.1515/biol-2022-0530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/27/2022] [Accepted: 11/02/2022] [Indexed: 01/26/2023] Open
Abstract
Beta-tricalcium phosphate (β-TCP) bioceramics have an inorganic composition similar to the human bone. While conventional methods can only produce ceramic scaffolds with poor controllability, the advancement of 3D-printing, especially stereolithography, made it possible to manufacture controllable, highly precise, micropore ceramic scaffolds. In this study, the stereolithography was applied to produce β-TCP bioceramics, while ZrO2, Al2O3, Ti6Al4V, and polyetheretherketone (PEEK) were used as controls. Phase analysis, water contact angle tests, and Micro-CT were applied to evaluate the surface properties and scaffold. Hemolytic toxicity, cell proliferation, and morphological assessment were performed to evaluate the biocompatibility. Alkaline phosphatase (ALP) level, mineralization, and qRT-PCR were measured to evaluate the osteointegration. During the manufacturing of β-TCP, no evident impurity substance and hemolytic toxicity was found. Cells on β-TCP had good morphologies, and their proliferation capability was similar to Ti6Al4V, which was higher than the other materials. Cells on β-TCP had higher ALP levels than PEEK. The degree of mineralization was significantly higher on β-TCP. The expression of osteogenesis-related genes on β-TCP was similar to Ti6Al4V and higher than the other materials. In this study, the β-TCP produced by stereolithography had no toxicity, high accuracy, and excellent osteointegration capability, thus resulting as a good choice for bone implants.
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Affiliation(s)
- Jialiang Li
- Department of Orthopedics, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi Province, China
| | - Jiaxi Li
- Department of Orthopedics, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi Province, China
| | - Yubing Yang
- Department of Orthopedics, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi Province, China
| | - Xijing He
- Department of Orthopedics, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi Province, China
| | - Xinyu Wei
- Department of Health Management, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi Province, China
| | - Qinghua Tan
- Department of Orthopedics, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi Province, China
| | - Yiqun Wang
- Department of Orthopedics, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi Province, China
| | - Siyue Xu
- Department of Orthopedics, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi Province, China
| | - Sue Chang
- Department of Orthopedics, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi Province, China
| | - Weiwei Liu
- Department of Precision Medicine Group, Equipment Research Institute, National Innovation Institute of Additive Manufacturing, Xi’an, Shaanxi Province, China
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32
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Pitacco P, Sadowska JM, O'Brien FJ, Kelly DJ. 3D bioprinting of cartilaginous templates for large bone defect healing. Acta Biomater 2023; 156:61-74. [PMID: 35907556 DOI: 10.1016/j.actbio.2022.07.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 07/18/2022] [Accepted: 07/21/2022] [Indexed: 01/18/2023]
Abstract
Damaged or diseased bone can be treated using autografts or a range of different bone grafting biomaterials, however limitations with such approaches has motivated increased interest in developmentally inspired bone tissue engineering (BTE) strategies that seek to recapitulate the process of endochondral ossification (EO) as a means of regenerating critically sized defects. The clinical translation of such strategies will require the engineering of scaled-up, geometrically defined hypertrophic cartilage grafts that can be rapidly vascularised and remodelled into bone in mechanically challenging defect environments. The goal of this study was to 3D bioprint mechanically reinforced cartilaginous templates and to assess their capacity to regenerate critically sized femoral bone defects. Human mesenchymal stem/stromal cells (hMSCs) were incorporated into fibrin based bioinks and bioprinted into polycaprolactone (PCL) frameworks to produce mechanically reinforced constructs. Chondrogenic priming of such hMSC laden constructs was required to support robust vascularisation and graft mineralisation in vivo following their subcutaneous implantation into nude mice. With a view towards maximising their potential to support endochondral bone regeneration, we next explored different in vitro culture regimes to produce chondrogenic and early hypertrophic engineered grafts. Following their implantation into femoral bone defects within transiently immunosuppressed rats, such bioprinted constructs were rapidly remodelled into bone in vivo, with early hypertrophic constructs supporting higher levels of vascularisation and bone formation compared to the chondrogenic constructs. Such early hypertrophic bioprinted constructs also supported higher levels of vascularisation and spatially distinct patterns of new formation compared to BMP-2 loaded collagen scaffolds (here used as a positive control). In conclusion, this study demonstrates that fibrin based bioinks support chondrogenesis of hMSCs in vitro, which enables the bioprinting of mechanically reinforced hypertrophic cartilaginous templates capable of supporting large bone defect regeneration. These results support the use of 3D bioprinting as a strategy to scale-up the engineering of developmentally inspired templates for BTE. STATEMENT OF SIGNIFICANCE: Despite the promise of developmentally inspired tissue engineering strategies for bone regeneration, there are still challenges that need to be addressed to enable clinical translation. This work reports the development and assessment (in vitro and in vivo) of a 3D bioprinting strategy to engineer mechanically-reinforced cartilaginous templates for large bone defect regeneration using human MSCs. Using distinct in vitro priming protocols, it was possible to generate cartilage grafts with altered phenotypes. More hypertrophic grafts, engineered in vitro using TGF-β3 and BMP-2, supported higher levels of blood vessel infiltration and accelerated bone regeneration in vivo. This study also identifies some of the advantages and disadvantages of such endochondral bone TE strategies over the direct delivery of BMP-2 from collagen-based scaffolds.
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Affiliation(s)
- Pierluca Pitacco
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland.
| | - Joanna M Sadowska
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland; Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine Royal College of Surgeons in Ireland, Ireland.
| | - Fergal J O'Brien
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland; Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine Royal College of Surgeons in Ireland, Ireland.
| | - Daniel J Kelly
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland; Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin, Ireland; Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine Royal College of Surgeons in Ireland, Ireland.
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33
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Introduction to three-dimensional printing in medicine. 3D Print Med 2023. [DOI: 10.1016/b978-0-323-89831-7.00008-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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34
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High-resolution 3D printing for healthcare. 3D Print Med 2023. [DOI: 10.1016/b978-0-323-89831-7.00013-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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35
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Mass Customization of Polylactic Acid (PLA) Parts via a Hybrid Manufacturing Process. Polymers (Basel) 2022; 14:polym14245413. [PMID: 36559779 PMCID: PMC9786657 DOI: 10.3390/polym14245413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Mass customization is the development of items tailored to specific customers, but produced at low unit cost in high-volume. In this context, hybrid manufacturing (HM) combines fused deposition modeling (FDM) and injection molding (IM) to fabricate a single personalized part with minimum manufacturing cost. In this technique, inserts with different physical features are first FDM-fabricated and then IM-overmolded. This study investigated the effect of hybrid FDM-IM production technology, FDM insert geometry on mechanical properties, and micro-structural evolution of Polylactic Acid (PLA) samples. The findings indicated a comparable tensile properties of FDM-IM samples (68.38 MPa) to IM batch (68.95 MPa), emphasizing the potential of HM in the manufacturing industry. Maximum tensile stress of FDM-IM specimens shows an upward trend due to the increased infill density of preforms. In addition, overmolding interface direction results in a big gap for the maximum tensile strengths between half-length series specimens (12.99 MPa to 19.09 MPa) and half-thickness series specimens (53.83 MPa to 59.92 MPa). Furthermore, four joint configurations resulted in different mechanical performances of finished specimens, in which the female cube sample exhibits the highest tensile stress (68.38 MPa), while the batch with male T joint shows a lower value in maximum tensile strength (59.51 MPa), exhibiting a similar tensile performance with the half-thickness 75% batch without joint configuration. This study lays the groundwork for using HM to produce bespoke and mechanically improved parts over FDM alone.
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36
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Zhu T, Zhu J, Lu S, Mo X. Evaluation of electrospun PCL diol-based elastomer fibers as a beneficial matrix for vascular tissue engineering. Colloids Surf B Biointerfaces 2022; 220:112963. [DOI: 10.1016/j.colsurfb.2022.112963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 11/07/2022]
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Forrestal DP, Allenby MC, Simpson B, Klein TJ, Woodruff MA. Personalized Volumetric Tissue Generation by Enhancing Multiscale Mass Transport through 3D Printed Scaffolds in Perfused Bioreactors. Adv Healthc Mater 2022; 11:e2200454. [PMID: 35765715 DOI: 10.1002/adhm.202200454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/06/2022] [Indexed: 01/28/2023]
Abstract
Engineered tissues provide an alternative to graft material, circumventing the use of donor tissue such as autografts or allografts and non-physiological synthetic implants. However, their lack of vasculature limits the growth of volumetric tissue more than several millimeters thick which limits their success post-implantation. Perfused bioreactors enhance nutrient mass transport inside lab-grown tissue but remain poorly customizable to support the culture of personalized implants. Here, a multiscale framework of computational fluid dynamics (CFD), additive manufacturing, and a perfusion bioreactor system are presented to engineer personalized volumetric tissue in the laboratory. First, microscale 3D printed scaffold pore geometries are designed and 3D printed to characterize media perfusion through CFD and experimental fluid testing rigs. Then, perfusion bioreactors are custom-designed to combine 3D printed scaffolds with flow-focusing inserts in patient-specific shapes as simulated using macroscale CFD. Finally, these computationally optimized bioreactor-scaffold assemblies are additively manufactured and cultured with pre-osteoblast cells for 7, 20, and 24 days to achieve tissue growth in the shape of human calcaneus bones of 13 mL volume and 1 cm thickness. This framework enables an intelligent model-based design of 3D printed scaffolds and perfusion bioreactors which enhances nutrient transport for long-term volumetric tissue growth in personalized implant shapes. The novel methods described here are readily applicable for use with different cell types, biomaterials, and scaffold microstructures to research therapeutic solutions for a wide range of tissues.
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Affiliation(s)
- David P Forrestal
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,Herston Biofabrication Institute, Metro North Hospital and Health Service, 7 Butterfield St, Herston, Queensland, 4029, Australia.,School of Mechanical and Mining Engineering, The University of Queensland, Staff House Rd, St Lucia, Queensland, 4072, Australia
| | - Mark C Allenby
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,School of Chemical Engineering, University of Queensland, Staff House Rd, St Lucia, Queensland, 4072, Australia
| | - Benjamin Simpson
- School of Science and Technology, Nottingham Trent University, Clifton Campus Rd, Nottingham, NG11 8NF, UK
| | - Travis J Klein
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia
| | - Maria A Woodruff
- Centre for Biomedical Technologies, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia
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3D Bioprinting of Smart Oxygen-Releasing Cartilage Scaffolds. J Funct Biomater 2022; 13:jfb13040252. [PMID: 36412893 PMCID: PMC9680294 DOI: 10.3390/jfb13040252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/07/2022] [Accepted: 11/14/2022] [Indexed: 11/19/2022] Open
Abstract
Three-dimensional bioprinting is a powerful technique for manufacturing improved engineered tissues. Three-dimensional bioprinted hydrogels have significantly advanced the medical field to repair cartilage tissue, allowing for such constructs to be loaded with different components, such as cells, nanoparticles, and/or drugs. Cartilage, as an avascular tissue, presents extreme difficulty in self-repair when it has been damaged. In this way, hydrogels with optimal chemical and physical properties have been researched to respond to external stimuli and release various bioactive agents to further promote a desired tissue response. For instance, methacryloyl gelatin (GelMA) is a type of modified hydrogel that allows for the encapsulation of cells, as well as oxygen-releasing nanoparticles that, in the presence of an aqueous medium and through controlled porosity and swelling, allow for internal and external environmental exchanges. This review explores the 3D bioprinting of hydrogels, with a particular focus on GelMA hydrogels, to repair cartilage tissue. Recent advances and future perspectives are described.
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On the Evolution of Additive Manufacturing (3D/4D Printing) Technologies: Materials, Applications, and Challenges. Polymers (Basel) 2022; 14:polym14214698. [PMID: 36365695 PMCID: PMC9656270 DOI: 10.3390/polym14214698] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 10/27/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
Abstract
The scientific community is and has constantly been working to innovate and improve the available technologies in our use. In that effort, three-dimensional (3D) printing was developed that can construct 3D objects from a digital file. Three-dimensional printing, also known as additive manufacturing (AM), has seen tremendous growth over the last three decades, and in the last five years, its application has widened significantly. Three-dimensional printing technology has the potential to fill the gaps left by the limitations of the current manufacturing technologies, and it has further become exciting with the addition of a time dimension giving rise to the concept of four-dimensional (4D) printing, which essentially means that the structures created by 4D printing undergo a transformation over time under the influence of internal or external stimuli. The created objects are able to adapt to changing environmental variables such as moisture, temperature, light, pH value, etc. Since their introduction, 3D and 4D printing technologies have extensively been used in the healthcare, aerospace, construction, and fashion industries. Although 3D printing has a highly promising future, there are still a number of challenges that must be solved before the technology can advance. In this paper, we reviewed the recent advances in 3D and 4D printing technologies, the available and potential materials for use, and their current and potential future applications. The current and potential role of 3D printing in the imperative fight against COVID-19 is also discussed. Moreover, the major challenges and developments in overcoming those challenges are addressed. This document provides a cutting-edge review of the materials, applications, and challenges in 3D and 4D printing technologies.
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3D Bioprinting Technology and Hydrogels Used in the Process. J Funct Biomater 2022; 13:jfb13040214. [PMID: 36412855 PMCID: PMC9680466 DOI: 10.3390/jfb13040214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/21/2022] [Accepted: 10/23/2022] [Indexed: 11/06/2022] Open
Abstract
3D bioprinting has gained visibility in regenerative medicine and tissue engineering due to its applicability. Over time, this technology has been optimized and adapted to ensure a better printability of bioinks and biomaterial inks, contributing to developing structures that mimic human anatomy. Therefore, cross-linked polymeric materials, such as hydrogels, have been highly targeted for the elaboration of bioinks, as they guarantee cell proliferation and adhesion. Thus, this short review offers a brief evolution of the 3D bioprinting technology and elucidates the main hydrogels used in the process.
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41
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The emerging role of 3D-printing in ocular drug delivery: Challenges, current status, and future prospects. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Mandal S, Nagi GK, Corcoran AA, Agrawal R, Dubey M, Hunt RW. Algal polysaccharides for 3D printing: A review. Carbohydr Polym 2022; 300:120267. [DOI: 10.1016/j.carbpol.2022.120267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/11/2022] [Accepted: 10/23/2022] [Indexed: 11/02/2022]
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Singh G, Singh S, Kumar R, Parkash C, Pruncu C, Ramakrishna S. Tissues and organ printing: An evolution of technology and materials. Proc Inst Mech Eng H 2022; 236:1695-1710. [DOI: 10.1177/09544119221125084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Since its beginnings, three-dimensional printing (3DP) technology has been successful because of ongoing advances in operating principles, the range of materials and cost-saving measures. However, the 3DP technological progressions in the biomedical sector have majorly taken place in the last decade after the evolution of novel 3DP systems, generally categorised as bioprinters and biomaterials to provide a replacement, transplantation or regeneration of the damaged organs and tissue constructs of the human body. There is now substantial scientific literature accessible to support the benefits of digital healthcare procedures with the help of bioprinters. It is of the highest significance to know the fundamental principles of the available printers and the compatibility of biomaterials as their feedstock, notwithstanding the huge potential of bioprinting systems to manufacture organs and other human body components. This paper provides a precise and helpful reading of the different categories of bioprinters, suitable biomaterials, numerical simulations and modelling and examples of much acknowledged clinical practices. The paper will also cite the prominent issues that still have not received desired solutions. Overall, the article will be of great use for all the professionals, scholars and engineers concerned with the 3DP, bioprinting and biomaterials.
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Affiliation(s)
- Gurminder Singh
- Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Sunpreet Singh
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
- Mechanical Engineering Department, Chandigarh University, Punjab
| | - Raman Kumar
- Mechanical Engineering, Guru Nanak Dev Engineering College, Ludhiana, Punjab, India
| | - Chander Parkash
- School of Mechanical Engineering, Lovely Professional University, Phagwara, Punjab, India
| | - Catalin Pruncu
- Departimento di Meccanica, Matematica e Management, Politecnico di Bari, 70125 Bari, Italy
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
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44
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Kakarla AB, Kong I, Kong C, Irving H, Thomas CJ. Extrusion of Cell Encapsulated in Boron Nitride Nanotubes Reinforced Gelatin—Alginate Bioink for 3D Bioprinting. Gels 2022; 8:gels8100603. [PMID: 36286104 PMCID: PMC9602097 DOI: 10.3390/gels8100603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/19/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
Three-dimensional (3D) bioprinting, an innovative technology, has gained the attention of researchers as a promising technique for the redevelopment of complex tissue or organ structures. Despite significant advancements, a major challenge in 3D bioprinting is the limited number of suitable bioinks that fulfil the physiochemical requirements to produce complicated structures. Therefore, there is a demand for the production of bioinks for 3D bioprinting techniques. In this short communication, THP-1 cells encapsulated in boron nitride nanotubes (BNNTs) reinforced gelatin and alginate bioink was prepared. The study investigated the impact on the cells during printing using a fluorescence cell image. The results showed that the pure polymer bioinks demonstrated poor printability properties with the incorporation of cells. However, BNNT-combined bioink showed a significant increase in structural integrity even after the incorporation of cells. Furthermore, the scaffold structure was successfully printed with the cells incorporated bioink, and a considerable number of live cells were observed. With further studies, BNNTs as a promising nanomaterial for formulating bioink encapsulated with cells can be understood fully.
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Affiliation(s)
- Akesh Babu Kakarla
- School of Computing, Engineering and Mathematical Sciences, La Trobe University, Bendigo, VIC 3552, Australia
| | - Ing Kong
- School of Computing, Engineering and Mathematical Sciences, La Trobe University, Bendigo, VIC 3552, Australia
- Correspondence:
| | - Cin Kong
- Department of Biomedical Sciences, Faculty of Science and Engineering, University of Nottingham Malaysia Campus, Semenyih 43500, Selangor, Malaysia
| | - Helen Irving
- Department of Rural Clinical Sciences, La Trobe Institute for Molecular Sciences (LIMS), Bendigo, VIC 3552, Australia
| | - Colleen J. Thomas
- Department of Microbiology, Anatomy, Physiology and Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe University, Melbourne, VIC 3086, Australia
- Centre for Cardiovascular Biology and Disease Research, School of Agriculture, Biomedicine and Environment, La Trobe University, Melbourne, VIC 3086, Australia
- Pre-Clinical Critical Care Unit, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, VIC 3052, Australia
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45
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Sufaru IG, Macovei G, Stoleriu S, Martu MA, Luchian I, Kappenberg-Nitescu DC, Solomon SM. 3D Printed and Bioprinted Membranes and Scaffolds for the Periodontal Tissue Regeneration: A Narrative Review. MEMBRANES 2022; 12:membranes12090902. [PMID: 36135920 PMCID: PMC9505571 DOI: 10.3390/membranes12090902] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 05/31/2023]
Abstract
Numerous technologies and materials were developed with the aim of repairing and reconstructing the tissue loss in patients with periodontitis. Periodontal guided bone regeneration (GBR) and guided tissue regeneration (GTR) involves the use of a membrane which prevents epithelial cell migration, and helps to maintain the space, creating a protected area in which tissue regeneration is favored. Over the time, manufacturing procedures of such barrier membranes followed important improvements. Three-dimensional (3D) printing technology has led to major innovations in periodontal regeneration methods, using technologies such as inkjet printing, light-assisted 3D printing or micro-extrusion. Besides the 3D printing of monophasic and multi-phasic scaffolds, bioprinting and tissue engineering have emerged as innovative technologies which can change the way we see GTR and GBR.
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Affiliation(s)
- Irina-Georgeta Sufaru
- Department of Periodontology, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
| | - Georgiana Macovei
- Department of Oral and Dental Diagnostics, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
| | - Simona Stoleriu
- Department of Cariology and Restorative Dental Therapy, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
| | - Maria-Alexandra Martu
- Department of Periodontology, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
| | - Ionut Luchian
- Department of Periodontology, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
| | | | - Sorina Mihaela Solomon
- Department of Periodontology, Grigore T. Popa University of Medicine and Pharmacy, Universitatii Street 16, 700115 Iasi, Romania
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Zhao Z, Wu H, Liu X, Kang D, Xiao Z, Lin Q, Zhang A. Synthesis and characterization of tung oil-based UV curable for three-dimensional printing resins. RSC Adv 2022; 12:22119-22130. [PMID: 36043097 PMCID: PMC9364080 DOI: 10.1039/d2ra03182e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/19/2022] [Indexed: 12/05/2022] Open
Abstract
Using tung oil as the raw material, a new bio-based prepolymer was successfully synthesized by reacting with acrylic-modified rosin (β-acryloyl nutrient ethyl) ester (ARA)/acrylic-2-hydroxyethyl ester (HEA) followed by the use of the above composite material as the matrix and then reacting with the active diluent (2-HEMA, TPGDA) and the photoinitiator TPO and Irgacure1173 to successfully synthesize a new type of bio-based prepolymer-acrylate-epoxy tung oil polypolymer (AETP). The tung oil monomer before and after the epoxy formation was compared by proton NMR spectroscopy, and the chemical structure of AETP was analyzed by Fourier transform spectroscopy. Tung oil has an acid value of 1.5 mg KOH per g, an epoxy value of 5.38%, an iodine value of 11.28 g/100 g, and a refractive index of n25 = 1.475. Composite-based 3D printing resins (like AETP) were cured using digital light treatment, while some samples were also post-treated via ultraviolet (UV) light treatment. The AETP-based 3D printing resin has excellent thermal and mechanical properties, and the viscosity of its system is 313 mPa s; exposure time 4.5 s; the tensile strength, flexural strength and flexural modulus were 62 MPA, 63.84 MPa and 916.708 MPa, respectively; Shore hardness was 80 HD and shrinkage was 4.00%. The good performance of the AETP-based 3D printing resin is attributed to the rigidity of their tightly crosslinked structure. This study pioneered a method for producing photoactive acrylates (e.g., tung oil-based acrylate oligomer resins) from renewable, low-cost biomass for light-curing 3D printing. Using tung oil as the raw material, a new bio-based prepolymer was synthesized by reacting with ARA/HEA as the matrix and then reacting with the diluent and photoinitiator to synthesize a new bio-based prepolymer-acrylate-epoxy tung oil polypolymer.![]()
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Affiliation(s)
- Zicheng Zhao
- College of Mechanical Engineering and Mechanics, Xiangtan University Xiangtan 411105 China .,State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry Changsha 410000 China
| | - Hong Wu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry Changsha 410000 China
| | - Xudong Liu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry Changsha 410000 China
| | - Desheng Kang
- Hunan Xiangchun Agricultural Technology Co., Ltd Changsha 410000 China
| | - Zhihong Xiao
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry Changsha 410000 China
| | - Qiquan Lin
- College of Mechanical Engineering and Mechanics, Xiangtan University Xiangtan 411105 China
| | - Aihua Zhang
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry Changsha 410000 China
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Angiogenic Potential of Co-Cultured Human Umbilical Vein Endothelial Cells and Adipose Stromal Cells in Customizable 3D Engineered Collagen Sheets. J Funct Biomater 2022; 13:jfb13030107. [PMID: 35997445 PMCID: PMC9397038 DOI: 10.3390/jfb13030107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/21/2022] [Accepted: 07/26/2022] [Indexed: 01/25/2023] Open
Abstract
The wound healing process is much more complex than just the four phases of hemostasis, inflammation, proliferation, and maturation. Three-dimensional (3D) scaffolds made of biopolymers or ECM molecules using bioprinting can be used to promote the wound healing process, especially for complex 3D tissue lesions like chronic wounds. Here, a 3D-printed mold has been designed to produce customizable collagen type-I sheets containing human umbilical vein endothelial cells (HUVECs) and adipose stromal cells (ASCs) for the first time. In these 3D collagen sheets, the cellular activity leads to a restructuring of the collagen matrix. The upregulation of the growth factors Serpin E1 and TIMP-1 could be demonstrated in the 3D scaffolds with ACSs and HUVECs in co-culture. Both growth factors play a key role in the wound healing process. The capillary-like tube formation of HUVECs treated with supernatant from the collagen sheets revealed the secretion of angiogenic growth factors. Altogether, this demonstrates that collagen type I combined with the co-cultivation of HUVECs and ACSs has the potential to accelerate the process of angiogenesis and, thereby, might promote wound healing.
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48
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Panda S, Hajra S, Mistewicz K, Nowacki B, In-Na P, Krushynska A, Mishra YK, Kim HJ. A focused review on three-dimensional bioprinting technology for artificial organ fabrication. Biomater Sci 2022; 10:5054-5080. [PMID: 35876134 DOI: 10.1039/d2bm00797e] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Three-dimensional (3D) bioprinting technology has attracted a great deal of interest because it can be easily adapted to many industries and research sectors, such as biomedical, manufacturing, education, and engineering. Specifically, 3D bioprinting has provided significant advances in the medical industry, since such technology has led to significant breakthroughs in the synthesis of biomaterials, cells, and accompanying elements to produce composite living tissues. 3D bioprinting technology could lead to the immense capability of replacing damaged or injured tissues or organs with newly dispensed cell biomaterials and functional tissues. Several types of bioprinting technology and different bio-inks can be used to replicate cells and generate supporting units as complex 3D living tissues. Bioprinting techniques have undergone great advancements in the field of regenerative medicine to provide 3D printed models for numerous artificial organs and transplantable tissues. This review paper aims to provide an overview of 3D-bioprinting technologies by elucidating the current advancements, recent progress, opportunities, and applications in this field. It highlights the most recent advancements in 3D-bioprinting technology, particularly in the area of artificial organ development and cancer research. Additionally, the paper speculates on the future progress in 3D-bioprinting as a versatile foundation for several biomedical applications.
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Affiliation(s)
- Swati Panda
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology, Daegu-42988, South Korea.
| | - Sugato Hajra
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology, Daegu-42988, South Korea.
| | - Krystian Mistewicz
- Institute of Physics - Center for Science and Education, Silesian University of Technology, Krasińskiego 8, Katowice, Poland
| | - Bartłomiej Nowacki
- Faculty of Materials Engineering, Silesian University of Technology, Krasińskiego 8, Katowice, Poland
| | - Pichaya In-Na
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, 254 Phyathai Road, Wangmai, Pathumwan, Bangkok-10330, Thailand
| | - Anastasiia Krushynska
- Engineering and Technology Institute Groningen (ENTEG), Faculty of Science and Engineering, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, Netherlands
| | - Yogendra Kumar Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, 6400 Sønderborg, Denmark
| | - Hoe Joon Kim
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology, Daegu-42988, South Korea. .,Robotics and Mechatronics Research Center, Daegu Gyeongbuk Institute of Science and Technology, Daegu-42988, South Korea
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Measurement of Orthotropic Material Constants and Discussion on 3D Printing Parameters in Additive Manufacturing. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12136812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this study, the orthogonal mechanical properties of additive manufacturing technology were explored. Firstly, six test pieces of different stacking methods were printed with a 3D printer, based on fused deposition modeling. The resonance frequency was measured by a laser Doppler vibrometer as the test piece was struck by a steel ball, which was used to calculate the orthotropic material constants. The accuracy of these orthotropic material constants was then verified using finite element software through a comparison of the experimental results from multiple natural modes. Thus, a set of methods for the measurement and simulation verification of orthotropic material constants were established. Only three specific test specimens are needed to determine the orthotropic material constants using the vibrating sensor technique, instead of a universal testing machine. We also analyzed the influence of different printing parameters, including raster angle and layer height, on the material constants of the test pieces. The results indicate that a raster angle of 0° leads to the highest Young’s modulus, a raster angle of 45° leads to the highest shear modulus G, and a layer height of 0.15 mm leads to the highest material strength. In various stack conditions, the mechanical properties of fuse deposition additive manufacturing can be measured by inversely calculating frequency domain transformation.
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50
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Simeunovic A, Wolf K, Tierling K, Hoelzle DJ. A Surgical Robot for Intracorporeal Additive Manufacturing of Tissue Engineering Constructs. IEEE Robot Autom Lett 2022. [DOI: 10.1109/lra.2022.3183752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andrej Simeunovic
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH, USA
| | - Kevin Wolf
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH, USA
| | | | - David J. Hoelzle
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH, USA
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