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Oley MH, Oley MC, Sukarno V, Faruk M. Advances in Three-Dimensional Printing for Craniomaxillofacial Trauma Reconstruction: A Systematic Review. J Craniofac Surg 2024:00001665-990000000-01748. [PMID: 38958985 DOI: 10.1097/scs.0000000000010451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 06/01/2024] [Indexed: 07/04/2024] Open
Abstract
Craniomaxillofacial (CMF) fractures present significant challenges for plastic surgeons due to their intricate nature. Conventional methods such as autologous bone grafts have limitations, necessitating advancements in reconstructive surgery techniques. This study reviewed the use of three-dimensional printing for CMF trauma reconstruction using human studies. A systematic search of PubMed, EMBASE, and Google Scholar was conducted in February 2024 for case reports, case series, and clinical trials related to CMF trauma reconstruction using three-dimensional printing technology. The authors' systematic review included 20 studies and a total of 170 participants with CMF bone defects. In general, the authors observed low bias risk in analyzed case reports and series, serious bias risk in nonrandomized controlled trials, and moderate bias risk in randomized controlled trials. The printed objects included CMF structure model prototypes, patient-specific implants, and other custom surgical devices. Studies reveal successful outcomes, including restored facial symmetry and function, restored orbital occlusion, resolved enophthalmos and diplopia, achieved cosmetically symmetrical lower face reconstruction, and precise fitting of surgical devices, enhancing patient and surgeon comfort. However, complications such as local infection, implant exposure, and persistent diplopia were reported. Three-dimensional printed devices reduced surgery time but increased preparation time and production costs. In-house production options could mitigate these time and cost expenditures. Three-dimensional printing holds potential in CMF trauma reconstruction, addressing both functional and esthetic restoration. Nevertheless, challenges persist in implementing this advanced technology in resource-limited environments.
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Affiliation(s)
- Mendy Hatibie Oley
- Division of Plastic Reconstructive and Esthetic Surgery, Department of Surgery, Faculty of Medicine, Sam Ratulangi University
- Division of Plastic Reconstructive and Esthetic Surgery, Department of Surgery, Kandou Hospital
- Hyperbaric Centre Siloam Hospital
| | - Maximillian Christian Oley
- Hyperbaric Centre Siloam Hospital
- Division of Neurosurgery, Faculty of Medicine, Department of Surgery, Sam Ratulangi University
- Division of Neurosurgery, Department of Surgery, Kandou Hospital, Manado
| | | | - Muhammad Faruk
- Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
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2
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Kim S, Kim SG. Advancements in alveolar bone grafting and ridge preservation: a narrative review on materials, techniques, and clinical outcomes. Maxillofac Plast Reconstr Surg 2024; 46:14. [PMID: 38625426 PMCID: PMC11021384 DOI: 10.1186/s40902-024-00425-w] [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: 10/30/2023] [Accepted: 04/04/2024] [Indexed: 04/17/2024] Open
Abstract
This narrative review systematically explores the progression of materials and techniques in alveolar ridge preservation (ARP). We commence by delineating the evolution from traditional ARP methods to cutting-edge alternatives, including platelet-rich fibrin, injectable bone repair materials, and hydrogel systems. Critical examination of various studies reveals these innovative approaches not only accelerate bone healing but also significantly improve patient-reported outcomes, such as satisfaction, pain perception, and overall quality of life. Emphasis is placed on the correlation between advanced ARP techniques and enhanced patient comfort and clinical efficacy, underscoring their transformative potential in dental implantology. Highlighting the effectiveness of ARP, the implant survival rate over a span of 5 to 7 years was high, showcasing the reliability and success of these methods. Further, patients expressed high aesthetic satisfaction with the soft tissue outcome, evidenced by an average visual analog scale (VAS) score of 94. This positive aesthetic appraisal is linked to the clinical health of implants, potentially due to the employment of tooth-supported surgical guides. The economic analysis reveals a varied cost range for bone graft substitutes ($46.2 to $140) and socket sealing materials ($12 to $189), with a noteworthy correlation between the investment in barrier membranes and the diminished horizontal and vertical ridge resorption. This suggests that membrane usage significantly contributes to preserving ridge dimensions, offering a cost-effective strategy for enhancing ARP outcomes. In conclusion, this review illuminates the significant advancements in ARP, highlighting the shift towards innovative materials and techniques that not only promise enhanced bone regeneration and reduced healing times but also improve patient satisfaction and aesthetic outcomes. The documented high implant survival rate and the beneficial economic implications of membrane use further validate the effectiveness of contemporary ARP strategies, paving the way for their broader adoption in dental implantology.
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Affiliation(s)
- Suyoung Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea
| | - Seong-Gon Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea.
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Kim NH, Yang BE, On SW, Kwon IJ, Ahn KM, Lee JH, Byun SH. Customized three-dimensional printed ceramic bone grafts for osseous defects: a prospective randomized study. Sci Rep 2024; 14:3397. [PMID: 38336901 PMCID: PMC10858220 DOI: 10.1038/s41598-024-53686-w] [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: 11/24/2023] [Accepted: 02/03/2024] [Indexed: 02/12/2024] Open
Abstract
Ridge resorption can result in insufficient bone volume for implant surgery, necessitating bone substitutes to restore the resorption area. Recent advances in computer-aided design and manufacturing enable the use of alloplastic bone graft materials with customizable compositions or shapes. This randomized study evaluated the clinical effectiveness of a customized three-dimensional (3D) printed alloplastic bone material. Sixty patients requiring guided bone regeneration for implant installation following tooth extraction due to alveolar bone resorption were recruited at two institutions. The participants were randomly allocated to either a group that received 3D-printed patient-customized bone graft material or a group that received conventional block bone graft material. Implant installation with bone harvesting was performed approximately 5 months after bone grafting. Histological and radiological assessments of the harvested bone area were performed. The experimental group had a significantly higher percent bone volume and a smaller tissue surface than the control group. Bone volume, bone surface, bone surface/volume ratio, bone surface density (bone surface/total volume), and bone mineral density did not differ significantly between groups. Patient-customized bone graft materials offer convenience and reduce patient discomfort. The findings suggest 3D-printed patient-customized bone graft materials could be used as an alternative for simpler bone grafting procedures.
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Affiliation(s)
- Na-Hyun Kim
- Department of Conservative Dentistry, Hallym University Sacred Heart Hospital, Anyang, 14066, Republic of Korea
| | - Byoung-Eun Yang
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Gwanpyung-ro 170, Anyang, 14066, Republic of Korea
- Dental AI-Robotics Center, Hallym University Sacred Heart Hospital, Anyang, 14066, Republic of Korea
- Graduate School of Clinical Dentistry, Hallym University, Chuncheon, 24252, Republic of Korea
- Institute of Clinical Dentistry, Hallym University, Chuncheon, 24252, Republic of Korea
| | - Sung-Woon On
- Graduate School of Clinical Dentistry, Hallym University, Chuncheon, 24252, Republic of Korea
- Institute of Clinical Dentistry, Hallym University, Chuncheon, 24252, Republic of Korea
- Department of Oral and Maxillofacial Surgery, Department of Dentistry, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, 18450, Republic of Korea
| | - Ik-Jae Kwon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, 03080, Republic of Korea
| | - Kang-Min Ahn
- Department of Oral and Maxillofacial Surgery, Seoul Asan Medical Center, Seoul, 05505, Republic of Korea
| | - Jong-Ho Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, 03080, Republic of Korea
- Department of Oral and Maxillofacial Surgery, National Cancer Center, Goyang, 10408, Republic of Korea
| | - Soo-Hwan Byun
- Department of Oral and Maxillofacial Surgery, Hallym University Sacred Heart Hospital, Gwanpyung-ro 170, Anyang, 14066, Republic of Korea.
- Dental AI-Robotics Center, Hallym University Sacred Heart Hospital, Anyang, 14066, Republic of Korea.
- Graduate School of Clinical Dentistry, Hallym University, Chuncheon, 24252, Republic of Korea.
- Institute of Clinical Dentistry, Hallym University, Chuncheon, 24252, Republic of Korea.
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Manohar SS, Das C, Kakati V. Bone Tissue Engineering Scaffolds: Materials and Methods. 3D PRINTING AND ADDITIVE MANUFACTURING 2024; 11:347-362. [PMID: 38389691 PMCID: PMC10880649 DOI: 10.1089/3dp.2022.0216] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
The wide development in biomedical, regenerative medicine, and surgical techniques has ensured that new technologies are developed to improve patient-specific treatment and care. Tissue engineering is a special field in biomedical engineering that works toward cell development using scaffolds. Bone tissue engineering is a separate branch of tissue engineering, in which the construction of bone, functionalities of bone, and bone tissue regeneration are studied in detail to repair or regenerate new functional bone tissues. In India alone, people suffering from bone diseases are extensive in numbers. Almost 15% to 20% of the population suffers from osteoporosis. Bone scaffolds are proving to be an excellent solution for osseous abnormalities or defect treatment. Scaffolds are three dimensional (3D) and mostly porous structures created to enhance new tissue growth. Bone scaffolds are specially designed to promote osteoinductive cell growth, expansion, and migration on their surface. This review article aims to provide an overview of possible bone scaffolding materials in practice, different 3D techniques to fabricate these scaffolds, and effective bone scaffold characteristics targeted by researchers to fabricate tissue-engineered bone scaffolds.
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Affiliation(s)
- Shreeprasad S. Manohar
- Mechanical Engineering Department, Assam Don Bosco University, Guwahati, India
- Mechanical Department, DBIT, Mumbai, India
| | - Chinmoy Das
- Department of Orthopaedics, Tezpur Medical College and Hospital, Tezpur, India
| | - Vikramjit Kakati
- Mechanical Engineering Department, Assam Don Bosco University, Guwahati, India
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Jeong M, Radomski K, Lopez D, Liu JT, Lee JD, Lee SJ. Materials and Applications of 3D Printing Technology in Dentistry: An Overview. Dent J (Basel) 2023; 12:1. [PMID: 38275676 PMCID: PMC10814684 DOI: 10.3390/dj12010001] [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: 10/09/2023] [Revised: 12/05/2023] [Accepted: 12/14/2023] [Indexed: 01/27/2024] Open
Abstract
PURPOSE This narrative review aims to provide an overview of the mechanisms of 3D printing, the dental materials relevant to each mechanism, and the possible applications of these materials within different areas of dentistry. METHODS Subtopics within 3D printing technology in dentistry were identified and divided among five reviewers. Electronic searches of the Medline (PubMed) database were performed with the following search keywords: 3D printing, digital light processing, stereolithography, digital dentistry, dental materials, and a combination of the keywords. For this review, only studies or review papers investigating 3D printing technology for dental or medical applications were included. Due to the nature of this review, no formal evidence-based quality assessment was performed, and the search was limited to the English language without further restrictions. RESULTS A total of 64 articles were included. The significant applications, applied materials, limitations, and future directions of 3D printing technology were reviewed. Subtopics include the chronological evolution of 3D printing technology, the mechanisms of 3D printing technologies along with different printable materials with unique biomechanical properties, and the wide range of applications for 3D printing in dentistry. CONCLUSIONS This review article gives an overview of the history and evolution of 3D printing technology, as well as its associated advantages and disadvantages. Current 3D printing technologies include stereolithography, digital light processing, fused deposition modeling, selective laser sintering/melting, photopolymer jetting, powder binder, and 3D laser bioprinting. The main categories of 3D printing materials are polymers, metals, and ceramics. Despite limitations in printing accuracy and quality, 3D printing technology is now able to offer us a wide variety of potential applications in different fields of dentistry, including prosthodontics, implantology, oral and maxillofacial, orthodontics, endodontics, and periodontics. Understanding the existing spectrum of 3D printing applications in dentistry will serve to further expand its use in the dental field. Three-dimensional printing technology has brought about a paradigm shift in the delivery of clinical care in medicine and dentistry. The clinical use of 3D printing has created versatile applications which streamline our digital workflow. Technological advancements have also paved the way for the integration of new dental materials into dentistry.
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Affiliation(s)
- Min Jeong
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA 02115, USA; (M.J.); (K.R.); (D.L.); (J.D.L.)
| | - Kyle Radomski
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA 02115, USA; (M.J.); (K.R.); (D.L.); (J.D.L.)
| | - Diana Lopez
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA 02115, USA; (M.J.); (K.R.); (D.L.); (J.D.L.)
| | - Jack T. Liu
- Dexter Southfield, Brookline, MA 02445, USA;
| | - Jason D. Lee
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA 02115, USA; (M.J.); (K.R.); (D.L.); (J.D.L.)
| | - Sang J. Lee
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA 02115, USA; (M.J.); (K.R.); (D.L.); (J.D.L.)
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6
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Zheng H, Li M, Wu L, Liu W, Liu Y, Gao J, Lu Z. Progress in the application of hydrogels in immunotherapy of gastrointestinal tumors. Drug Deliv 2023; 30:2161670. [PMID: 36587630 PMCID: PMC9809389 DOI: 10.1080/10717544.2022.2161670] [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] [Indexed: 01/03/2023] Open
Abstract
Gastrointestinal tumors are the most common cancers with the highest morbidity and mortality worldwide. Surgery accompanied by chemotherapy, radiotherapy and targeted therapy remains the first option for gastrointestinal tumors. However, poor specificity for tumor cells of these postoperative treatments often leads to severe side effects and poor prognosis. Tumor immunotherapy, including checkpoint blockade and tumor vaccines, has developed rapidly in recent years, showing good curative effects and minimal side effects in the treatment of gastrointestinal tumors. National Comprehensive Cancer Network guidelines recommend tumor immunotherapy as part of the treatment of gastrointestinal tumors. However, the heterogeneity of tumor cells, complicacy of the tumor microenvironment and poor tumor immunogenicity hamper the effectiveness of tumor immunotherapy. Hydrogels, defined as three-dimensional, hydrophilic, and water-insoluble polymeric networks, could significantly improve the overall response rate of immunotherapy due to their superior drug loading efficacy, controlled release and drug codelivery ability. In this article, we briefly describe the research progress made in recent years on hydrogel delivery systems in immunotherapy for gastrointestinal tumors and discuss the potential future application prospects and challenges to provide a reference for the clinical application of hydrogels in tumor immunotherapy.
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Affiliation(s)
- Hao Zheng
- Department of General Surgery, Shanghai Changhai Hospital, Naval Medical University, Shanghai, China
| | - Meng Li
- Department of Dermatology, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Lili Wu
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, China
| | - Wenshang Liu
- Department of Dermatology, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Yu Liu
- Department of Gastroenterology, Jinling Hospital, Medical School of Nanjing University, Jiangsu, China
| | - Jie Gao
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, China,Jie Gao Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai200433, China
| | - Zhengmao Lu
- Department of General Surgery, Shanghai Changhai Hospital, Naval Medical University, Shanghai, China,CONTACT Zhengmao Lu Department of General Surgery, Shanghai Changhai Hospital, Naval Medical University, Shanghai200433, China
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7
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Karanth D, Song K, Martin ML, Meyer DR, Dolce C, Huang Y, Holliday LS. Towards resorbable 3D-printed scaffolds for craniofacial bone regeneration. Orthod Craniofac Res 2023; 26 Suppl 1:188-195. [PMID: 36866957 DOI: 10.1111/ocr.12645] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/19/2023] [Accepted: 02/24/2023] [Indexed: 03/04/2023]
Abstract
This review will briefly examine the development of 3D-printed scaffolds for craniofacial bone regeneration. We will, in particular, highlight our work using Poly(L-lactic acid) (PLLA) and collagen-based bio-inks. This paper is a narrative review of the materials used for scaffold fabrication by 3D printing. We have also reviewed two types of scaffolds that we designed and fabricated. Poly(L-lactic acid) (PLLA) scaffolds were printed using fused deposition modelling technology. Collagen-based scaffolds were printed using a bioprinting technique. These scaffolds were tested for their physical properties and biocompatibility. Work in the emerging field of 3D-printed scaffolds for bone repair is briefly reviewed. Our work provides an example of PLLA scaffolds that were successfully 3D-printed with optimal porosity, pore size and fibre thickness. The compressive modulus was similar to, or better than, the trabecular bone of the mandible. PLLA scaffolds generated an electric potential upon cyclic/repeated loading. The crystallinity was reduced during the 3D printing. The hydrolytic degradation was relatively slow. Osteoblast-like cells did not attach to uncoated scaffolds but attached well and proliferated after coating the scaffold with fibrinogen. Collagen-based bio-ink scaffolds were also printed successfully. Osteoclast-like cells adhered, differentiated, and survived well on the scaffold. Efforts are underway to identify means to improve the structural stability of the collagen-based scaffolds, perhaps through mineralization by the polymer-induced liquid precursor process. 3D-printing technology is promising for constructing next-generation bone regeneration scaffolds. We describe our efforts to test PLLA and collagen scaffolds produced by 3D printing. The 3D-printed PLLA scaffolds showed promising properties akin to natural bone. Collagen scaffolds need further work to improve structural integrity. Ideally, such biological scaffolds will be mineralized to produce true bone biomimetics. These scaffolds warrant further investigation for bone regeneration.
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Affiliation(s)
- Divakar Karanth
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, Florida, USA
| | - Kaidong Song
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida, USA
| | - Macey L Martin
- University of Florida College of Dentistry, Gainesville, Florida, USA
| | - Delaney R Meyer
- Department of Materials Science & Engineering, University of Florida, Gainesville, Florida, USA
| | - Calogero Dolce
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, Florida, USA
| | - Yong Huang
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida, USA
- Department of Biomedical Engineering, University of Florida, Gainesville, Florida, USA
| | - L Shannon Holliday
- Department of Orthodontics, University of Florida College of Dentistry, Gainesville, Florida, USA
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Shopova D, Mihaylova A, Yaneva A, Bakova D. Advancing Dentistry through Bioprinting: Personalization of Oral Tissues. J Funct Biomater 2023; 14:530. [PMID: 37888196 PMCID: PMC10607235 DOI: 10.3390/jfb14100530] [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: 09/16/2023] [Revised: 10/07/2023] [Accepted: 10/18/2023] [Indexed: 10/28/2023] Open
Abstract
Despite significant advancements in dental tissue restoration and the use of prostheses for addressing tooth loss, the prevailing clinical approaches remain somewhat inadequate for replicating native dental tissue characteristics. The emergence of three-dimensional (3D) bioprinting offers a promising innovation within the fields of regenerative medicine and tissue engineering. This technology offers notable precision and efficiency, thereby introducing a fresh avenue for tissue regeneration. Unlike the traditional framework encompassing scaffolds, cells, and signaling factors, 3D bioprinting constitutes a contemporary addition to the arsenal of tissue engineering tools. The ongoing shift from conventional dentistry to a more personalized paradigm, principally under the guidance of bioprinting, is poised to exert a significant influence in the foreseeable future. This systematic review undertakes the task of aggregating and analyzing insights related to the application of bioprinting in the context of regenerative dentistry. Adhering to PRISMA guidelines, an exhaustive literature survey spanning the years 2019 to 2023 was performed across prominent databases including PubMed, Scopus, Google Scholar, and ScienceDirect. The landscape of regenerative dentistry has ushered in novel prospects for dentoalveolar treatments and personalized interventions. This review expounds on contemporary accomplishments and avenues for the regeneration of pulp-dentin, bone, periodontal tissues, and gingival tissues. The progressive strides achieved in the realm of bioprinting hold the potential to not only enhance the quality of life but also to catalyze transformative shifts within the domains of medical and dental practices.
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Affiliation(s)
- Dobromira Shopova
- Department of Prosthetic Dentistry, Faculty of Dental Medicine, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria
| | - Anna Mihaylova
- Department of Healthcare Management, Faculty of Public Health, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria (D.B.)
| | - Antoniya Yaneva
- Department of Medical Informatics, Biostatistics and eLearning, Faculty of Public Health, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria;
| | - Desislava Bakova
- Department of Healthcare Management, Faculty of Public Health, Medical University of Plovdiv, 4000 Plovdiv, Bulgaria (D.B.)
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9
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Baecher H, Hoch CC, Knoedler S, Maheta BJ, Kauke-Navarro M, Safi AF, Alfertshofer M, Knoedler L. From bench to bedside - current clinical and translational challenges in fibula free flap reconstruction. Front Med (Lausanne) 2023; 10:1246690. [PMID: 37886365 PMCID: PMC10598714 DOI: 10.3389/fmed.2023.1246690] [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: 06/24/2023] [Accepted: 09/29/2023] [Indexed: 10/28/2023] Open
Abstract
Fibula free flaps (FFF) represent a working horse for different reconstructive scenarios in facial surgery. While FFF were initially established for mandible reconstruction, advancements in planning for microsurgical techniques have paved the way toward a broader spectrum of indications, including maxillary defects. Essential factors to improve patient outcomes following FFF include minimal donor site morbidity, adequate bone length, and dual blood supply. Yet, persisting clinical and translational challenges hamper the effectiveness of FFF. In the preoperative phase, virtual surgical planning and artificial intelligence tools carry untapped potential, while the intraoperative role of individualized surgical templates and bioprinted prostheses remains to be summarized. Further, the integration of novel flap monitoring technologies into postoperative patient management has been subject to translational and clinical research efforts. Overall, there is a paucity of studies condensing the body of knowledge on emerging technologies and techniques in FFF surgery. Herein, we aim to review current challenges and solution possibilities in FFF. This line of research may serve as a pocket guide on cutting-edge developments and facilitate future targeted research in FFF.
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Affiliation(s)
- Helena Baecher
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Cosima C. Hoch
- Medical Faculty, Friedrich Schiller University Jena, Jena, Germany
| | - Samuel Knoedler
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
- Division of Plastic Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
- Department of Plastic Surgery and Hand Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Bhagvat J. Maheta
- College of Medicine, California Northstate University, Elk Grove, CA, United States
| | - Martin Kauke-Navarro
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
| | - Ali-Farid Safi
- Craniologicum, Center for Cranio-Maxillo-Facial Surgery, Bern, Switzerland
- Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Michael Alfertshofer
- Division of Hand, Plastic and Aesthetic Surgery, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Leonard Knoedler
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Regensburg, Germany
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
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10
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Richter RF, Vater C, Korn M, Ahlfeld T, Rauner M, Pradel W, Stadlinger B, Gelinsky M, Lode A, Korn P. Treatment of critical bone defects using calcium phosphate cement and mesoporous bioactive glass providing spatiotemporal drug delivery. Bioact Mater 2023; 28:402-419. [PMID: 37361564 PMCID: PMC10285454 DOI: 10.1016/j.bioactmat.2023.06.001] [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: 01/26/2023] [Revised: 05/22/2023] [Accepted: 06/01/2023] [Indexed: 06/28/2023] Open
Abstract
Calcium phosphate cements (CPC) are currently widely used bone replacement materials with excellent bioactivity, but have considerable disadvantages like slow degradation. For critical-sized defects, however, an improved degradation is essential to match the tissue regeneration, especially in younger patients who are still growing. We demonstrate that a combination of CPC with mesoporous bioactive glass (MBG) particles led to an enhanced degradation in vitro and in a critical alveolar cleft defect in rats. Additionally, to support new bone formation the MBG was functionalized with hypoxia conditioned medium (HCM) derived from rat bone marrow stromal cells. HCM-functionalized scaffolds showed an improved cell proliferation and the highest formation of new bone volume. This highly flexible material system together with the drug delivery capacity is adaptable to patient specific needs and has great potential for clinical translation.
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Affiliation(s)
- Richard Frank Richter
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Corina Vater
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Margarete Korn
- Department of Oral and Maxillofacial Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Tilman Ahlfeld
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Martina Rauner
- Department of Medicine III and Center for Healthy Aging, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Winnie Pradel
- Department of Oral and Maxillofacial Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Bernd Stadlinger
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, Switzerland
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Paula Korn
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
- Department of Oral and Maxillofacial Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
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11
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Hu B, Gao J, Lu Y, Wang Y. Applications of Degradable Hydrogels in Novel Approaches to Disease Treatment and New Modes of Drug Delivery. Pharmaceutics 2023; 15:2370. [PMID: 37896132 PMCID: PMC10610366 DOI: 10.3390/pharmaceutics15102370] [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: 08/20/2023] [Revised: 09/03/2023] [Accepted: 09/07/2023] [Indexed: 10/29/2023] Open
Abstract
Hydrogels are particularly suitable materials for loading drug delivery agents; their high water content provides a biocompatible environment for most biomolecules, and their cross-linked nature protects the loaded agents from damage. During delivery, the delivered substance usually needs to be released gradually over time, which can be achieved by degradable cross-linked chains. In recent years, biodegradable hydrogels have become a promising technology in new methods of disease treatment and drug delivery methods due to their many advantageous properties. This review briefly discusses the degradation mechanisms of different types of biodegradable hydrogel systems and introduces the specific applications of degradable hydrogels in several new methods of disease treatment and drug delivery methods.
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Affiliation(s)
- Bo Hu
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China; (B.H.); (J.G.)
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic, Ministry of Education of China, Beijing Laboratory of Biomedical Materials, Beijing 100069, China
| | - Jinyuan Gao
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China; (B.H.); (J.G.)
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic, Ministry of Education of China, Beijing Laboratory of Biomedical Materials, Beijing 100069, China
| | - Yu Lu
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China; (B.H.); (J.G.)
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic, Ministry of Education of China, Beijing Laboratory of Biomedical Materials, Beijing 100069, China
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Yuji Wang
- Department of Medicinal Chemistry, College of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China; (B.H.); (J.G.)
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic, Ministry of Education of China, Beijing Laboratory of Biomedical Materials, Beijing 100069, China
- Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China
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12
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Delpierre A, Savard G, Renaud M, Rochefort GY. Tissue Engineering Strategies Applied in Bone Regeneration and Bone Repair. Bioengineering (Basel) 2023; 10:644. [PMID: 37370575 DOI: 10.3390/bioengineering10060644] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
Bone regeneration and repair present significant challenges in the field of regenerative medicine [...].
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Affiliation(s)
- Alexis Delpierre
- Faculty of Dentistry, Tours University, 37000 Tours, France
- Department of Odontology, Tours University Hospital, 37261 Tours, France
| | - Guillaume Savard
- Faculty of Dentistry, Tours University, 37000 Tours, France
- Department of Odontology, Tours University Hospital, 37261 Tours, France
| | - Matthieu Renaud
- Faculty of Dentistry, Tours University, 37000 Tours, France
- Department of Odontology, Tours University Hospital, 37261 Tours, France
| | - Gael Y Rochefort
- Faculty of Dentistry, Tours University, 37000 Tours, France
- SATT Lutech TTO, Research and Valorization Department, Sorbonne University, 75012 Paris, France
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13
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Maresca JA, DeMel DC, Wagner GA, Haase C, Geibel JP. Three-Dimensional Bioprinting Applications for Bone Tissue Engineering. Cells 2023; 12:cells12091230. [PMID: 37174630 PMCID: PMC10177443 DOI: 10.3390/cells12091230] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/11/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023] Open
Abstract
The skeletal system is a key support structure within the body. Bones have unique abilities to grow and regenerate after injury. Some injuries or degeneration of the tissues cannot rebound and must be repaired by the implantation of foreign objects following injury or disease. This process is invasive and does not always improve the quality of life of the patient. New techniques have arisen that can improve bone replacement or repair. 3D bioprinting employs a printer capable of printing biological materials in multiple directions. 3D bioprinting potentially requires multiple steps and additional support structures, which may include the use of hydrogels for scaffolding. In this review, we discuss normal bone physiology and pathophysiology and how bioprinting can be adapted to further the field of bone tissue engineering.
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Affiliation(s)
- Jamie A Maresca
- The John B. Pierce Laboratory, University of New Haven, New Haven, CT 06519, USA
| | - Derek C DeMel
- Yale School of Engineering & Applied Science, Yale University, New Haven, CT 06519, USA
| | - Grayson A Wagner
- Yale School of Engineering & Applied Science, Yale University, New Haven, CT 06519, USA
| | - Colin Haase
- The John B. Pierce Laboratory, University of New Haven, New Haven, CT 06519, USA
| | - John P Geibel
- The John B. Pierce Laboratory, University of New Haven, New Haven, CT 06519, USA
- Yale School of Engineering & Applied Science, Yale University, New Haven, CT 06519, USA
- Department of Surgery, School of Medicine, Yale University, New Haven, CT 06519, USA
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14
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Raees S, Ullah F, Javed F, Akil HM, Jadoon Khan M, Safdar M, Din IU, Alotaibi MA, Alharthi AI, Bakht MA, Ahmad A, Nassar AA. Classification, processing, and applications of bioink and 3D bioprinting: A detailed review. Int J Biol Macromol 2023; 232:123476. [PMID: 36731696 DOI: 10.1016/j.ijbiomac.2023.123476] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/12/2023] [Accepted: 01/25/2023] [Indexed: 02/02/2023]
Abstract
With the advancement in 3D bioprinting technology, cell culture methods can design 3D environments which are both, complex and physiologically relevant. The main component in 3D bioprinting, bioink, can be split into various categories depending on the criterion of categorization. Although the choice of bioink and bioprinting process will vary greatly depending on the application, general features such as material properties, biological interaction, gelation, and viscosity are always important to consider. The foundation of 3D bioprinting is the exact layer-by-layer implantation of biological elements, biochemicals, and living cells with the spatial control of the implantation of functional elements onto the biofabricated 3D structure. Three basic strategies underlie the 3D bioprinting process: autonomous self-assembly, micro tissue building blocks, and biomimicry or biomimetics. Tissue engineering can benefit from 3D bioprinting in many ways, but there are still numerous obstacles to overcome before functional tissues can be produced and used in clinical settings. A better comprehension of the physiological characteristics of bioink materials and a higher level of ability to reproduce the intricate biologically mimicked and physiologically relevant 3D structures would be a significant improvement for 3D bioprinting to overcome the limitations.
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Affiliation(s)
- Sania Raees
- Department of Biosciences, COMSATS University Islamabad, Park Road, 45520 Islamabad, Pakistan
| | - Faheem Ullah
- Department of Biological Sciences, National University of Medical Sciences, NUMS, Rawalpindi 46000, Pakistan; School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, Pulau Pinang, Malaysia
| | - Fatima Javed
- Department of Chemistry, Shaheed Benazir Bhutto Women University, Peshawar 25000, KPK, Pakistan
| | - Hazizan Md Akil
- School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, Pulau Pinang, Malaysia
| | - Muhammad Jadoon Khan
- Department of Biosciences, COMSATS University Islamabad, Park Road, 45520 Islamabad, Pakistan
| | - Muhammad Safdar
- Department of Pharmacy, Gomal University D. I Khan, KPK, Pakistan
| | - Israf Ud Din
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 16278 Al-Kharj, Saudi Arabia.
| | - Mshari A Alotaibi
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 16278 Al-Kharj, Saudi Arabia
| | - Abdulrahman I Alharthi
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 16278 Al-Kharj, Saudi Arabia
| | - M Afroz Bakht
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 16278 Al-Kharj, Saudi Arabia
| | - Akil Ahmad
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 16278 Al-Kharj, Saudi Arabia
| | - Amal A Nassar
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 16278 Al-Kharj, Saudi Arabia
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15
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Solidum JGN, Ceriales JA, Ong EP, Ornos EDB, Relador RJL, Quebral EPB, Lapeña JFF, Tantengco OAG, Lee KY. Nanomedicine and nanoparticle-based delivery systems in plastic and reconstructive surgery. Maxillofac Plast Reconstr Surg 2023; 45:15. [PMID: 36995508 PMCID: PMC10060935 DOI: 10.1186/s40902-023-00383-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/06/2023] [Indexed: 03/31/2023] Open
Abstract
BACKGROUND Nanotechnology and nanomedicine are rising novel fields in plastic and reconstructive surgery (PRS). The use of nanomaterials often goes with regenerative medicine. Due to their nanoscale, these materials stimulate repair at the cellular and molecular levels. Nanomaterials may be placed as components of nanocomposite polymers allowing enhancement of overall biochemical and biomechanical properties with improved scaffold properties, cellular attachment, and tissue regeneration. They may also be formulated as nanoparticle-based delivery systems for controlled release of signal factors or antimicrobials, for example. However, more studies on nanoparticle-based delivery systems still need to be done in this field. Nanomaterials are also used as frameworks for nerves, tendons, and other soft tissues. MAIN BODY In this mini-review, we focus on nanoparticle-based delivery systems and nanoparticles targeting cells for response and regeneration in PRS. Specifically, we investigate their roles in various tissue regeneration, skin and wound healing, and infection control. Cell surface-targeted, controlled-release, and inorganic nanoparticle formulations with inherent biological properties have enabled enhanced wound healing, tumor visualization/imaging, tissue viability, and decreased infection, and graft/transplantation rejection through immunosuppression. CONCLUSIONS Nanomedicine is also now being applied with electronics, theranostics, and advanced bioengineering technologies. Overall, it is a promising field that can improve patient clinical outcomes in PRS.
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Affiliation(s)
- Jea Giezl N Solidum
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Jeremy A Ceriales
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Erika P Ong
- College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Eric David B Ornos
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Ruth Joy L Relador
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Elgin Paul B Quebral
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Jose Florencio F Lapeña
- Department of Otolaryngology - Head and Neck Surgery, Section of Craniomaxillofacial Plastic and Restorative Surgery, College of Medicine - Philippine General Hospital, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Ourlad Alzeus G Tantengco
- Department of Physiology, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines.
- Department of Biology, College of Science, De La Salle University, Manila, 1004, Philippines.
| | - Ka Yiu Lee
- Swedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Östersund, Sweden.
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Yang W, Wang C, Luo W, Apicella A, Ji P, Wang G, Liu B, Fan Y. Effectiveness of biomechanically stable pergola-like additively manufactured scaffold for extraskeletal vertical bone augmentation. Front Bioeng Biotechnol 2023; 11:1112335. [PMID: 37057137 PMCID: PMC10089125 DOI: 10.3389/fbioe.2023.1112335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Objective: Extraskeletal vertical bone augmentation in oral implant surgery requires extraosseous regeneration beyond the anatomical contour of the alveolar bone. It is necessary to find a better technical/clinical solution to solve the dilemma of vertical bone augmentation. 3D-printed scaffolds are all oriented to general bone defect repair, but special bone augmentation design still needs improvement.Methods: This study aimed to develop a structural pergola-like scaffold to be loaded with stem cells from the apical papilla (SCAPs), bone morphogenetic protein 9 (BMP9) and vascular endothelial growth factor (VEGF) to verify its bone augmentation ability even under insufficient blood flow supply. Scaffold biomechanical and fluid flow optimization design by finite element analysis (FEA) and computational fluid dynamics (CFD) was performed on pergola-like additive-manufactured scaffolds with various porosity and pore size distributions. The scaffold geometrical configuration showing better biomechanical and fluid dynamics properties was chosen to co-culture for 2 months in subcutaneously into nude mice, with different SCAPs, BMP9, and (or) VEGF combinations. Finally, the samples were removed for Micro-CT and histological analysis.Results: Micro-CT and histological analysis of the explanted scaffolds showed new bone formation in the “Scaffold + SCAPs + BMP9” and the “Scaffold + SCAPs + BMP9 + VEGF” groups where the VEGF addition did not significantly improve osteogenesis. No new bone formation was observed either for the “Blank Scaffold” and the “Scaffold + SCAPs + GFP” group. The results of this study indicate that BMP9 can effectively promote the osteogenic differentiation of SCAPs.Conclusion: The pergola-like scaffold can be used as an effective carrier and support device for new bone regeneration and mineralization in bone tissue engineering, and can play a crucial role in obtaining considerable vertical bone augmentation even under poor blood supply.
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Affiliation(s)
- Wei Yang
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Chao Wang
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Stomatological Hospital of Chongqing Medical University, Chongqing, China
- Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, School of Engineering Medicine, Beihang University, Beijing, China
- *Correspondence: Chao Wang,
| | - Wenping Luo
- Laboratory Animal Center, Southwest University, Chongqing, China
| | - Antonio Apicella
- Advanced Materials Lab, Department of Architecture and Industrial Design, University of Campania, Aversa, Italy
| | - Ping Ji
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Stomatological Hospital of Chongqing Medical University, Chongqing, China
| | - Gong Wang
- Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing, China
| | - Bingshan Liu
- Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing, China
| | - Yubo Fan
- Key Laboratory of Biomechanics and Mechanobiology, Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, School of Engineering Medicine, Beihang University, Beijing, China
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17
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Kim MK, Ham MJ, Kim WR, Kim HG, Kwon KJ, Kim SG, Park YW. Investigating the accuracy of mandibulectomy and reconstructive surgery using 3D customized implants and surgical guides in a rabbit model. Maxillofac Plast Reconstr Surg 2023; 45:8. [PMID: 36701071 PMCID: PMC9880108 DOI: 10.1186/s40902-023-00375-9] [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: 11/16/2022] [Accepted: 01/11/2023] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND This study aimed to analyze the accuracy of the output of three-dimensional (3D) customized surgical guides and titanium implants in a rabbit model, and of mandibulectomy, reconstructive surgery, and surgical outcome; additionally, the correlation between surgical accuracy and surgical outcomes, including the differences in surgical outcome according to surgical accuracy, was analyzed. RESULTS The output of implants was accurately implemented within the error range (- 0.03-0.03 mm), and the surgical accuracy varied depending on the measured area (range - 0.4-1.1 mm). Regarding surgical outcomes, angle between the mandibular lower borders showed the most sensitive results and distance between the lingual cusps of the first molars represented the most accurate outcomes. A significant correlation was noted between surgical accuracy in the anteroposterior length of the upper borders pre- and postoperatively and the angle between the mandibular lower borders (regression coefficient = 0.491, p = 0.028). In the group wherein surgery was performed more accurately, the angle between the mandibular lower borders was reproduced more accurately (p = 0.021). A selective laser melting machine accurately printed the implants as designed. Considering the positive correlation among surgical accuracy in the mandibular upper borders, angle between the mandibular lower borders, and more accurately reproduced angle between the mandibular lower borders, the angle between the mandibular lower borders is considered a good indicator for evaluating the outcomes of reconstructive surgery. CONCLUSION To reduce errors in surgical outcomes, it is necessary to devise a positioner for the surgical guide and design a 3D surgical guide to constantly maintain the direction of bone resection. A fixed area considering the concept of three-point fixation should be selected for stable positioning of the implant; in some cases, bilateral cortical bone fixation should be considered. The angle between the mandibular lower borders is a sensitive indicator for evaluating the outcomes of reconstructive surgery.
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Affiliation(s)
- Min Keun Kim
- grid.411733.30000 0004 0532 811XDepartment of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 25457 Republic of Korea
| | - Min Ji Ham
- grid.454135.20000 0000 9353 1134Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangneung, 25440 Republic of Korea
| | - Won Rae Kim
- grid.454135.20000 0000 9353 1134Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangneung, 25440 Republic of Korea
| | - Hyung Giun Kim
- grid.454135.20000 0000 9353 1134Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gangneung, 25440 Republic of Korea
| | - Kwang Jun Kwon
- grid.411733.30000 0004 0532 811XDepartment of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 25457 Republic of Korea
| | - Seong Gon Kim
- grid.411733.30000 0004 0532 811XDepartment of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 25457 Republic of Korea
| | - Young Wook Park
- grid.411733.30000 0004 0532 811XDepartment of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 25457 Republic of Korea
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18
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PEEK for Oral Applications: Recent Advances in Mechanical and Adhesive Properties. Polymers (Basel) 2023; 15:polym15020386. [PMID: 36679266 PMCID: PMC9864167 DOI: 10.3390/polym15020386] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/06/2023] [Accepted: 01/07/2023] [Indexed: 01/15/2023] Open
Abstract
Polyetheretherketone (PEEK) is a thermoplastic material widely used in engineering applications due to its good biomechanical properties and high temperature stability. Compared to traditional metal and ceramic dental materials, PEEK dental implants exhibit less stress shielding, thus better matching the mechanical properties of bone. As a promising medical material, PEEK can be used as implant abutments, removable and fixed prostheses, and maxillofacial prostheses. It can be blended with materials such as fibers and ceramics to improve its mechanical strength for better clinical dental applications. Compared to conventional pressed and CAD/CAM milling fabrication, 3D-printed PEEK exhibits excellent flexural and tensile strength and parameters such as printing temperature and speed can affect its mechanical properties. However, the bioinert nature of PEEK can make adhesive bonding difficult. The bond strength can be improved by roughening or introducing functional groups on the PEEK surface by sandblasting, acid etching, plasma treatment, laser treatment, and adhesive systems. This paper provides a comprehensive overview of the research progress on the mechanical properties of PEEK for dental applications in the context of specific applications, composites, and their preparation processes. In addition, the research on the adhesive properties of PEEK over the past few years is highlighted. Thus, this review aims to build a conceptual and practical toolkit for the study of the mechanical and adhesive properties of PEEK materials. More importantly, it provides a rationale and a general new basis for the application of PEEK in the dental field.
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iPSC-neural crest derived cells embedded in 3D printable bio-ink promote cranial bone defect repair. Sci Rep 2022; 12:18701. [PMID: 36333414 PMCID: PMC9636385 DOI: 10.1038/s41598-022-22502-8] [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: 06/27/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022] Open
Abstract
Cranial bone loss presents a major clinical challenge and new regenerative approaches to address craniofacial reconstruction are in great demand. Induced pluripotent stem cell (iPSC) differentiation is a powerful tool to generate mesenchymal stromal cells (MSCs). Prior research demonstrated the potential of bone marrow-derived MSCs (BM-MSCs) and iPSC-derived mesenchymal progenitor cells via the neural crest (NCC-MPCs) or mesodermal lineages (iMSCs) to be promising cell source for bone regeneration. Overexpression of human recombinant bone morphogenetic protein (BMP)6 efficiently stimulates bone formation. The study aimed to evaluate the potential of iPSC-derived cells via neural crest or mesoderm overexpressing BMP6 and embedded in 3D printable bio-ink to generate viable bone graft alternatives for cranial reconstruction. Cell viability, osteogenic potential of cells, and bio-ink (Ink-Bone or GelXa) combinations were investigated in vitro using bioluminescent imaging. The osteogenic potential of bio-ink-cell constructs were evaluated in osteogenic media or nucleofected with BMP6 using qRT-PCR and in vitro μCT. For in vivo testing, two 2 mm circular defects were created in the frontal and parietal bones of NOD/SCID mice and treated with Ink-Bone, Ink-Bone + BM-MSC-BMP6, Ink-Bone + iMSC-BMP6, Ink-Bone + iNCC-MPC-BMP6, or left untreated. For follow-up, µCT was performed at weeks 0, 4, and 8 weeks. At the time of sacrifice (week 8), histological and immunofluorescent analyses were performed. Both bio-inks supported cell survival and promoted osteogenic differentiation of iNCC-MPCs and BM-MSCs in vitro. At 4 weeks, cell viability of both BM-MSCs and iNCC-MPCs were increased in Ink-Bone compared to GelXA. The combination of Ink-Bone with iNCC-MPC-BMP6 resulted in an increased bone volume in the frontal bone compared to the other groups at 4 weeks post-surgery. At 8 weeks, both iNCC-MPC-BMP6 and iMSC-MSC-BMP6 resulted in an increased bone volume and partial bone bridging between the implant and host bone compared to the other groups. The results of this study show the potential of NCC-MPC-incorporated bio-ink to regenerate frontal cranial defects. Therefore, this bio-ink-cell combination should be further investigated for its therapeutic potential in large animal models with larger cranial defects, allowing for 3D printing of the cell-incorporated material.
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Simorgh S, Alasvand N, Khodadadi M, Ghobadi F, Malekzadeh Kebria M, Brouki Milan P, Kargozar S, Baino F, Mobasheri A, Mozafari M. Additive Manufacturing of Bioactive Glass Biomaterials. Methods 2022; 208:75-91. [DOI: 10.1016/j.ymeth.2022.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/22/2022] [Accepted: 10/27/2022] [Indexed: 11/05/2022] Open
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Ma Q, Li Q, Cai X, Zhou P, Wu Z, Wang B, Ma W, Fu S. Injectable hydrogels as drug delivery platform for in-situ treatment of malignant tumor. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Tissue engineering approaches for the in vitro production of spermatids to treat male infertility: A review. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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23
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Kim SG. Multiple ways for the same destination: bone regeneration. Maxillofac Plast Reconstr Surg 2022; 44:9. [PMID: 35235091 PMCID: PMC8891406 DOI: 10.1186/s40902-022-00340-y] [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: 02/24/2021] [Accepted: 02/22/2022] [Indexed: 11/25/2022] Open
Abstract
The regeneration of the bone is a challenging topic for maxillofacial plastic and reconstructive surgeons. For successful bone regeneration, timely providing of essential components is prerequisite. They are cellular components (osteoblasts, osteoclasts, and immune cells), extracellular matrix, and inorganic components (calcium and phosphate). Any deficient component can be provided from outside as a graft. Accordingly, there are many ways for successful bone regeneration. Selection of appropriate methods in an individualized situation is important.
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Affiliation(s)
- Seong-Gon Kim
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea.
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24
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Application and Development of Modern 3D Printing Technology in the Field of Orthopedics. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8759060. [PMID: 35211626 PMCID: PMC8863440 DOI: 10.1155/2022/8759060] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/06/2022] [Accepted: 01/17/2022] [Indexed: 12/31/2022]
Abstract
3D printing, also known as additive manufacturing, is a technology that uses a variety of adhesive materials such as powdered metal or plastic to construct objects based on digital models. Recently, 3D printing technology has been combined with digital medicine, materials science, cytology, and other multidisciplinary fields, especially in the field of orthopedic built-in objects. The development of advanced 3D printing materials continues to meet the needs of clinical precision medicine and customize the most suitable prosthesis for everyone to improve service life and satisfaction. This article introduces the development of 3D printing technology and different types of materials. We also discuss the shortcomings of 3D printing technology and the current challenges, including the poor bionics of 3D printing products, lack of ideal bioinks, product safety, and lack of market supervision. We also prospect the future development trends of 3D printing.
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Recent developments of biomaterial scaffolds and regenerative approaches for craniomaxillofacial bone tissue engineering. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02928-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Bioengineered Living Bone Grafts-A Concise Review on Bioreactors and Production Techniques In Vitro. Int J Mol Sci 2022; 23:ijms23031765. [PMID: 35163687 PMCID: PMC8836415 DOI: 10.3390/ijms23031765] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 01/29/2022] [Accepted: 01/30/2022] [Indexed: 12/26/2022] Open
Abstract
It has been observed that bone fractures carry a risk of high mortality and morbidity. The deployment of a proper bone healing method is essential to achieve the desired success. Over the years, bone tissue engineering (BTE) has appeared to be a very promising approach aimed at restoring bone defects. The main role of the BTE is to apply new, efficient, and functional bone regeneration therapy via a combination of bone scaffolds with cells and/or healing promotive factors (e.g., growth factors and bioactive agents). The modern approach involves also the production of living bone grafts in vitro by long-term culture of cell-seeded biomaterials, often with the use of bioreactors. This review presents the most recent findings concerning biomaterials, cells, and techniques used for the production of living bone grafts under in vitro conditions. Particular attention has been given to features of known bioreactor systems currently used in BTE: perfusion bioreactors, rotating bioreactors, and spinner flask bioreactors. Although bioreactor systems are still characterized by some limitations, they are excellent platforms to form bioengineered living bone grafts in vitro for bone fracture regeneration. Moreover, the review article also describes the types of biomaterials and sources of cells that can be used in BTE as well as the role of three-dimensional bioprinting and pulsed electromagnetic fields in both bone healing and BTE.
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Mani MP, Sadia M, Jaganathan SK, Khudzari AZ, Supriyanto E, Saidin S, Ramakrishna S, Ismail AF, Faudzi AAM. A review on 3D printing in tissue engineering applications. JOURNAL OF POLYMER ENGINEERING 2022. [DOI: 10.1515/polyeng-2021-0059] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
In tissue engineering, 3D printing is an important tool that uses biocompatible materials, cells, and supporting components to fabricate complex 3D printed constructs. This review focuses on the cytocompatibility characteristics of 3D printed constructs, made from different synthetic and natural materials. From the overview of this article, inkjet and extrusion-based 3D printing are widely used methods for fabricating 3D printed scaffolds for tissue engineering. This review highlights that scaffold prepared by both inkjet and extrusion-based 3D printing techniques showed significant impact on cell adherence, proliferation, and differentiation as evidenced by in vitro and in vivo studies. 3D printed constructs with growth factors (FGF-2, TGF-β1, or FGF-2/TGF-β1) enhance extracellular matrix (ECM), collagen I content, and high glycosaminoglycan (GAG) content for cell growth and bone formation. Similarly, the utilization of 3D printing in other tissue engineering applications cannot be belittled. In conclusion, it would be interesting to combine different 3D printing techniques to fabricate future 3D printed constructs for several tissue engineering applications.
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Affiliation(s)
- Mohan Prasath Mani
- School of Biomedical Engineering and Health Sciences, Faculty of Engineering , Universiti Teknologi Malaysia , Skudai 81310 , Malaysia
| | - Madeeha Sadia
- School of Biomedical Engineering and Health Sciences, Faculty of Engineering , Universiti Teknologi Malaysia , Skudai 81310 , Malaysia
- Department of Biomedical Engineering, Faculty of Electrical and Computer Engineering , NED University of Engineering and Technology , Karachi , Pakistan
| | - Saravana Kumar Jaganathan
- Department of Engineering, Faculty of Science and Engineering , University of Hull , Hull HU6 7RX , UK
- Centre for Artificial Intelligence and Robotics, Universiti Teknologi Malaysia , Kuala Lumpur 54100 , Malaysia
- School of Electrical Engineering, Faculty of Engineering , Universiti Teknologi Malaysia , Johor Bahru 81310 , Malaysia
| | - Ahmad Zahran Khudzari
- School of Biomedical Engineering and Health Sciences, Faculty of Engineering , Universiti Teknologi Malaysia , Skudai 81310 , Malaysia
- IJN-UTM Cardiovascular Engineering Center, Institute of Human Centered Engineering, Universiti Teknologi Malaysia , Skudai 81310 , Malaysia
| | - Eko Supriyanto
- School of Biomedical Engineering and Health Sciences, Faculty of Engineering , Universiti Teknologi Malaysia , Skudai 81310 , Malaysia
- IJN-UTM Cardiovascular Engineering Center, Institute of Human Centered Engineering, Universiti Teknologi Malaysia , Skudai 81310 , Malaysia
| | - Syafiqah Saidin
- School of Biomedical Engineering and Health Sciences, Faculty of Engineering , Universiti Teknologi Malaysia , Skudai 81310 , Malaysia
- IJN-UTM Cardiovascular Engineering Center, Institute of Human Centered Engineering, Universiti Teknologi Malaysia , Skudai 81310 , Malaysia
| | - Seeram Ramakrishna
- Department of Mechanical Engineering , Center for Nanofibers & Nanotechnology Initiative, National University of Singapore , Singapore , Singapore
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia , Johor Bahru 81310 , Malaysia
| | - Ahmad Athif Mohd Faudzi
- Centre for Artificial Intelligence and Robotics, Universiti Teknologi Malaysia , Kuala Lumpur 54100 , Malaysia
- School of Electrical Engineering, Faculty of Engineering , Universiti Teknologi Malaysia , Johor Bahru 81310 , Malaysia
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Maia FR, Bastos AR, Oliveira JM, Correlo VM, Reis RL. Recent approaches towards bone tissue engineering. Bone 2022; 154:116256. [PMID: 34781047 DOI: 10.1016/j.bone.2021.116256] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 10/19/2021] [Accepted: 11/09/2021] [Indexed: 12/17/2022]
Abstract
Bone tissue engineering approaches have evolved towards addressing the challenges of tissue mimetic requirements over the years. Different strategies have been combining scaffolds, cells, and biologically active cues using a wide range of fabrication techniques, envisioning the mimicry of bone tissue. On the one hand, biomimetic scaffold-based strategies have been pursuing different biomaterials to produce scaffolds, combining with diverse and innovative fabrication strategies to mimic bone tissue better, surpassing bone grafts. On the other hand, biomimetic scaffold-free approaches mainly foresee replicating endochondral ossification, replacing hyaline cartilage with new bone. Finally, since bone tissue is highly vascularized, new strategies focused on developing pre-vascularized scaffolds or pre-vascularized cellular aggregates have been a motif of study. The recent biomimetic scaffold-based and scaffold-free approaches in bone tissue engineering, focusing on materials and fabrication methods used, are overviewed herein. The biomimetic vascularized approaches are also discussed, namely the development of pre-vascularized scaffolds and pre-vascularized cellular aggregates.
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Affiliation(s)
- F Raquel Maia
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's PT Government Associate Laboratory, Braga, Guimarães, Portugal.
| | - Ana R Bastos
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Joaquim M Oliveira
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Vitor M Correlo
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's PT Government Associate Laboratory, Braga, Guimarães, Portugal
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Bertassoni LE. Bioprinting of Complex Multicellular Organs with Advanced Functionality-Recent Progress and Challenges Ahead. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2101321. [PMID: 35060652 PMCID: PMC10171718 DOI: 10.1002/adma.202101321] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/20/2021] [Indexed: 05/12/2023]
Abstract
Bioprinting has emerged as one of the most promising strategies for fabrication of functional organs in the lab as an alternative to transplant organs. While progress in the field has mostly been restricted to a few miniaturized tissues with minimal biological functionality until a few years ago, recent progress has advanced the concept of building three-dimensional multicellular organ complexity remarkably. This review discusses a series of milestones that have paved the way for bioprinting of tissue constructs that have advanced levels of biological and architectural functionality. Critical materials, engineering and biological challenges that are key to addressing the desirable function of engineered organs are presented. These are discussed in light of the many difficulties to replicate the heterotypic organization of multicellular solid organs, the nanoscale precision of the extracellular microenvironment in hierarchical tissues, as well as the advantages and limitations of existing bioprinting methods to adequately overcome these barriers. In summary, the advances of the field toward realistic manufacturing of functional organs have never been so extensive, and this manuscript serves as a road map for some of the recent progress and the challenges ahead.
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Affiliation(s)
- Luiz E Bertassoni
- Division of Biomaterials and Biomechanics, School of Dentistry, Oregon Health and Science University, Portland, OR, 97201, USA
- Department of Biomedical Engineering, School of Medicine, Oregon Health and Science University, Portland, OR, 97239, USA
- Center for Regenerative Medicine, Oregon Health and Science University, Portland, OR, 97239, USA
- Cancer Early Detection Advanced Research (CEDAR), Knight Cancer Institute, Oregon Health and Science University, Portland, OR, 97239, USA
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Bone Regeneration of a 3D-Printed Alloplastic and Particulate Xenogenic Graft with rhBMP-2. Int J Mol Sci 2021; 22:ijms222212518. [PMID: 34830400 PMCID: PMC8624569 DOI: 10.3390/ijms222212518] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/14/2021] [Accepted: 11/18/2021] [Indexed: 02/05/2023] Open
Abstract
This study aimed to evaluate the bone regeneration capacity of a customized alloplastic material and xenograft with recombinant human bone morphogenetic protein-2 (rhBMP-2). We prepared hydroxyapatite (HA)/tricalcium phosphate (TCP) pure ceramic bone blocks made using a 3D printing system and added rhBMP-2 to both materials. In eight beagle dogs, a total of 32 defects were created on the lower jaws. The defective sites of the negative control group were left untreated (N group; 8 defects), and those in the positive control group were filled with particle-type Bio-Oss (P group; 12 defects). The defect sites in the experimental group were filled with 3D-printed synthetic bone blocks (3D group; 12 defects). Radiographic and histological evaluations were performed after healing periods of 6 and 12 weeks and showed no significant difference in new bone formation and total bone between the P and 3D groups. The 3D-printed custom HA/TCP graft with rhBMP-2 showed bone regeneration effects similar to that of particulate Bio-Oss with rhBMP-2. Through further study and development, the application of 3D-printed customized alloplastic grafts will be extended to various fields of bone regeneration.
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31
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Wang Z, Agrawal P, Zhang YS. Nanotechnologies and Nanomaterials in 3D (Bio)printing toward Bone Regeneration. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Zongliang Wang
- Division of Engineering in Medicine Department of Medicine Brigham and Women's Hospital Harvard Medical School Cambridge MA 02139 USA
| | - Prajwal Agrawal
- Division of Engineering in Medicine Department of Medicine Brigham and Women's Hospital Harvard Medical School Cambridge MA 02139 USA
| | - Yu Shrike Zhang
- Division of Engineering in Medicine Department of Medicine Brigham and Women's Hospital Harvard Medical School Cambridge MA 02139 USA
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Cui R, Wu Q, Wang J, Zheng X, Ou R, Xu Y, Qu S, Li D. Hydrogel-By-Design: Smart Delivery System for Cancer Immunotherapy. Front Bioeng Biotechnol 2021; 9:723490. [PMID: 34368109 PMCID: PMC8334721 DOI: 10.3389/fbioe.2021.723490] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 07/09/2021] [Indexed: 11/24/2022] Open
Abstract
Immunotherapy has emerged as a promising strategy for cancer treatment, in which durable immune responses were generated in patients with malignant tumors. In the past decade, biomaterials have played vital roles as smart drug delivery systems for cancer immunotherapy to achieve both enhanced therapeutic benefits and reduced side effects. Hydrogels as one of the most biocompatible and versatile biomaterials have been widely applied in localized drug delivery systems due to their unique properties, such as loadable, implantable, injectable, degradable and stimulus responsible. Herein, we have briefly summarized the recent advances on hydrogel-by-design delivery systems including the design of hydrogels and their applications for delivering of immunomodulatory molecules (e.g., cytokine, adjuvant, checkpoint inhibitor, antigen), immune cells and environmental regulatory substances in cancer immunotherapy. We have also discussed the challenges and future perspectives of hydrogels in the development of cancer immunotherapy for precision medicine at the end.
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Affiliation(s)
- Rongwei Cui
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- Key Lab of Advanced Technologies of Materials, Ministry of Education, School of Material Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Qiang Wu
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Jing Wang
- School of Life Sciences, Northwestern Polytechnical University, Xi’an, China
| | - Xiaoming Zheng
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Rongying Ou
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yunsheng Xu
- Department of Dermatovenereology, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Shuxin Qu
- Key Lab of Advanced Technologies of Materials, Ministry of Education, School of Material Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Danyang Li
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
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33
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Bone Conduction Capacity of Highly Porous 3D-Printed Titanium Scaffolds Based on Different Pore Designs. MATERIALS 2021; 14:ma14143892. [PMID: 34300810 PMCID: PMC8303426 DOI: 10.3390/ma14143892] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 11/17/2022]
Abstract
In porous titanium scaffolds manufactured via 3D printing, the differences in bone formation according to pore design and implantation period were studied. Titanium scaffolds with three types of different pore structures (Octadense, Gyroid, and Dode) were fabricated via 3D printing using the selective laser melting method. Mechanical properties of scaffolds were investigated. Prepared specimens were inserted into both femurs of nine rabbits and their clinical characteristics were observed. Three animals were sacrificed at the 2nd, 4th, and 6th weeks, and the differences in bone formation were radiologically and histologically analyzed. The percentage of new bone and surface density in the pore structure were observed to be approximately 25% and 8 mm2/mm3, respectively. There was no difference in the amount of newly formed bone according to the pore design at 2, 4, and 6 weeks. In addition, no differences in the amount of newly formed bone were observed with increasing time within the same pore design for all three designs. During the 6-week observation period, the proportion of new bones in the 3D-printed titanium scaffold was approximately 25%. Differences in bone formation according to the pore design or implantation period were not observed.
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Jiang W, Mei H, Zhao S. Applications of 3D Bio-Printing in Tissue Engineering and Biomedicine. J Biomed Nanotechnol 2021; 17:989-1006. [PMID: 34167615 DOI: 10.1166/jbn.2021.3078] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In recent years, 3D bio-printing technology has developed rapidly and become an advanced bio-manufacturing technology. At present, 3D bio-printing technology has been explored in the fields of tissue engineering, drug testing and screening, regenerative medicine and clinical disease research and has achieved many research results. Among them, the application of 3D bio-printing technology in tissue engineering has been widely concerned by researchers, and it contributing many breakthroughs in the preparation of tissue engineering scaffolds. In the future, it is possible to print fully functional tissues or organs by using 3D bio-printing technology which exhibiting great potential development prospects in th applications of organ transplantation and human body implants. It is expected to solve thebiomedical problems of organ shortage and repair of damaged tissues and organs. Besides,3Dbio-printing technology will benefit human beings in more fields. Therefore, this paper reviews the current applications, research progresses and limitations of 3D bio-printing technology in biomedical and life sciences, and discusses the main printing strategies of 3D bio-printing technology. And, the research emphases, possible development trends and suggestions of the application of 3D bio-printing are summarized to provide references for the application research of 3D bio-printing.
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Affiliation(s)
- Wei Jiang
- College of Chemical Engineering, Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, China
| | - Haiying Mei
- College of Chemical Engineering, Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, China
| | - Shuyan Zhao
- College of Chemical Engineering, Huaqiao University, 668 Jimei Blvd., Xiamen, Fujian, 361021, China
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Tong A, Pham QL, Abatemarco P, Mathew A, Gupta D, Iyer S, Voronov R. Review of Low-Cost 3D Bioprinters: State of the Market and Observed Future Trends. SLAS Technol 2021; 26:333-366. [PMID: 34137286 DOI: 10.1177/24726303211020297] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Three-dimensional (3D) bioprinting has become mainstream for precise and repeatable high-throughput fabrication of complex cell cultures and tissue constructs in drug testing and regenerative medicine, food products, dental and medical implants, biosensors, and so forth. Due to this tremendous growth in demand, an overwhelming amount of hardware manufacturers have recently flooded the market with different types of low-cost bioprinter models-a price segment that is most affordable to typical-sized laboratories. These machines range in sophistication, type of the underlying printing technology, and possible add-ons/features, which makes the selection process rather daunting (especially for a nonexpert customer). Yet, the review articles available in the literature mostly focus on the technical aspects of the printer technologies under development, as opposed to explaining the differences in what is already on the market. In contrast, this paper provides a snapshot of the fast-evolving low-cost bioprinter niche, as well as reputation profiles (relevant to delivery time, part quality, adherence to specifications, warranty, maintenance, etc.) of the companies selling these machines. Specifically, models spanning three dominant technologies-microextrusion, droplet-based/inkjet, and light-based/crosslinking-are reviewed. Additionally, representative examples of high-end competitors (including up-and-coming microfluidics-based bioprinters) are discussed to highlight their major differences and advantages relative to the low-cost models. Finally, forecasts are made based on the trends observed during this survey, as to the anticipated trickling down of the high-end technologies to the low-cost printers. Overall, this paper provides insight for guiding buyers on a limited budget toward making informed purchasing decisions in this fast-paced market.
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Affiliation(s)
- Anh Tong
- The Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology Newark College of Engineering, Newark, NJ, USA
| | - Quang Long Pham
- The Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology Newark College of Engineering, Newark, NJ, USA
| | - Paul Abatemarco
- The Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology Newark College of Engineering, Newark, NJ, USA
| | - Austin Mathew
- Department of Biomedical Engineering, New Jersey Institute of Technology Newark College of Engineering, Newark, NJ, USA
| | - Dhruv Gupta
- The Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology Newark College of Engineering, Newark, NJ, USA
| | - Siddharth Iyer
- The Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology Newark College of Engineering, Newark, NJ, USA
| | - Roman Voronov
- The Otto H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology Newark College of Engineering, Newark, NJ, USA.,Department of Biomedical Engineering, New Jersey Institute of Technology Newark College of Engineering, Newark, NJ, USA
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Morrison DG, Tomlinson RE. Leveraging Advancements in Tissue Engineering for Bioprinting Dental Tissues. ACTA ACUST UNITED AC 2021; 23. [PMID: 34268456 DOI: 10.1016/j.bprint.2021.e00153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
3D bioprinting allows biocompatible materials and cells to be deposited in precise locations in three-dimensional space, enabling researchers to surpass the limitations of traditional 2D cell culture and to create innovative therapies. 3D bioprinting is one of the newest tools developed in the field of tissue engineering, which has traditionally utilized a paradigm revolving around scaffolds, cells, and signals. In this review, we discuss how new developments in each of these three research areas relates to bioprinting dental tissues - specifically teeth, periodontal ligament, and alveolar bone. Important considerations include how scaffold materials and geometry affect regeneration of dental tissues, the importance of using dental cells in these applications, and the role of signaling molecules for creating a clinically relevant bioengineered dental implant. We conclude with potential new directions for research that would allow the burgeoning field of regenerative dentistry to achieve its lofty goals.
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Affiliation(s)
- Devin Grace Morrison
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Ryan E Tomlinson
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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Zaszczyńska A, Moczulska-Heljak M, Gradys A, Sajkiewicz P. Advances in 3D Printing for Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3149. [PMID: 34201163 PMCID: PMC8226963 DOI: 10.3390/ma14123149] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/01/2021] [Accepted: 06/04/2021] [Indexed: 12/18/2022]
Abstract
Tissue engineering (TE) scaffolds have enormous significance for the possibility of regeneration of complex tissue structures or even whole organs. Three-dimensional (3D) printing techniques allow fabricating TE scaffolds, having an extremely complex structure, in a repeatable and precise manner. Moreover, they enable the easy application of computer-assisted methods to TE scaffold design. The latest additive manufacturing techniques open up opportunities not otherwise available. This study aimed to summarize the state-of-art field of 3D printing techniques in applications for tissue engineering with a focus on the latest advancements. The following topics are discussed: systematics of the available 3D printing techniques applied for TE scaffold fabrication; overview of 3D printable biomaterials and advancements in 3D-printing-assisted tissue engineering.
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Affiliation(s)
- Angelika Zaszczyńska
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b St., 02-106 Warsaw, Poland
| | - Maryla Moczulska-Heljak
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b St., 02-106 Warsaw, Poland
| | - Arkadiusz Gradys
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b St., 02-106 Warsaw, Poland
| | - Paweł Sajkiewicz
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b St., 02-106 Warsaw, Poland
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Pavek A, Nartker C, Saleh M, Kirkham M, Khajeh Pour S, Aghazadeh-Habashi A, Barrott JJ. Tissue Engineering Through 3D Bioprinting to Recreate and Study Bone Disease. Biomedicines 2021; 9:551. [PMID: 34068971 PMCID: PMC8156159 DOI: 10.3390/biomedicines9050551] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/05/2021] [Accepted: 05/09/2021] [Indexed: 12/12/2022] Open
Abstract
The applications of 3D bioprinting are becoming more commonplace. Since the advent of tissue engineering, bone has received much attention for the ability to engineer normal bone for tissue engraftment or replacement. While there are still debates on what materials comprise the most durable and natural replacement of normal tissue, little attention is given to recreating diseased states within the bone. With a better understanding of the cellular pathophysiology associated with the more common bone diseases, these diseases can be scaled down to a more throughput way to test therapies that can reverse the cellular pathophysiology. In this review, we will discuss the potential of 3D bioprinting of bone tissue in the following disease states: osteoporosis, Paget's disease, heterotopic ossification, osteosarcoma, osteogenesis imperfecta, and rickets disease. The development of these 3D bioprinted models will allow for the advancement of novel therapy testing resulting in possible relief to these chronic diseases.
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Affiliation(s)
- Adriene Pavek
- Department of Biomedical and Pharmaceutical Sciences, Idaho State University, Pocatello, ID 83209, USA; (A.P.); (C.N.); (M.K.); (S.K.P.)
| | - Christopher Nartker
- Department of Biomedical and Pharmaceutical Sciences, Idaho State University, Pocatello, ID 83209, USA; (A.P.); (C.N.); (M.K.); (S.K.P.)
| | | | - Matthew Kirkham
- Department of Biomedical and Pharmaceutical Sciences, Idaho State University, Pocatello, ID 83209, USA; (A.P.); (C.N.); (M.K.); (S.K.P.)
| | - Sana Khajeh Pour
- Department of Biomedical and Pharmaceutical Sciences, Idaho State University, Pocatello, ID 83209, USA; (A.P.); (C.N.); (M.K.); (S.K.P.)
| | - Ali Aghazadeh-Habashi
- Department of Biomedical and Pharmaceutical Sciences, Idaho State University, Pocatello, ID 83209, USA; (A.P.); (C.N.); (M.K.); (S.K.P.)
| | - Jared J. Barrott
- Department of Biomedical and Pharmaceutical Sciences, Idaho State University, Pocatello, ID 83209, USA; (A.P.); (C.N.); (M.K.); (S.K.P.)
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Abdollahiyan P, Oroojalian F, Hejazi M, de la Guardia M, Mokhtarzadeh A. Nanotechnology, and scaffold implantation for the effective repair of injured organs: An overview on hard tissue engineering. J Control Release 2021; 333:391-417. [DOI: 10.1016/j.jconrel.2021.04.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 03/31/2021] [Accepted: 04/02/2021] [Indexed: 12/17/2022]
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Khorsandi D, Fahimipour A, Abasian P, Saber SS, Seyedi M, Ghanavati S, Ahmad A, De Stephanis AA, Taghavinezhaddilami F, Leonova A, Mohammadinejad R, Shabani M, Mazzolai B, Mattoli V, Tay FR, Makvandi P. 3D and 4D printing in dentistry and maxillofacial surgery: Printing techniques, materials, and applications. Acta Biomater 2021; 122:26-49. [PMID: 33359299 DOI: 10.1016/j.actbio.2020.12.044] [Citation(s) in RCA: 115] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 12/12/2022]
Abstract
3D and 4D printing are cutting-edge technologies for precise and expedited manufacturing of objects ranging from plastic to metal. Recent advances in 3D and 4D printing technologies in dentistry and maxillofacial surgery enable dentists to custom design and print surgical drill guides, temporary and permanent crowns and bridges, orthodontic appliances and orthotics, implants, mouthguards for drug delivery. In the present review, different 3D printing technologies available for use in dentistry are highlighted together with a critique on the materials available for printing. Recent reports of the application of these printed platformed are highlighted to enable readers appreciate the progress in 3D/4D printing in dentistry.
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Quadri F, Soman SS, Vijayavenkataraman S. Progress in cardiovascular bioprinting. Artif Organs 2021; 45:652-664. [PMID: 33432583 DOI: 10.1111/aor.13913] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/13/2020] [Accepted: 01/04/2021] [Indexed: 12/12/2022]
Abstract
Cardiovascular disease has been the leading cause of death globally for the past 15 years. Following a major cardiac disease episode, the ideal treatment would be the replacement of the damaged tissue, due to the limited regenerative capacity of cardiac tissues. However, we suffer from a chronic organ donor shortage which causes approximately 20 people to die each day waiting to receive an organ. Bioprinting of tissues and organs can potentially alleviate this burden by fabricating low cost tissue and organ replacements for cardiac patients. Clinical adoption of bioprinting in cardiovascular medicine is currently limited by the lack of systematic demonstration of its effectiveness, high costs, and the complexity of the workflow. Here, we give a concise review of progress in cardiovascular bioprinting and its components. We further discuss the challenges and future prospects of cardiovascular bioprinting in clinical applications.
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Affiliation(s)
- Faisal Quadri
- Division of Science, New York University Abu Dhabi, Abu Dhabi, UAE
| | - Soja Saghar Soman
- Division of Engineering, New York University Abu Dhabi, Abu Dhabi, UAE
| | - Sanjairaj Vijayavenkataraman
- Division of Engineering, New York University Abu Dhabi, Abu Dhabi, UAE.,Department of Mechanical and Aerospace Engineering, Tandon School of Engineering, New York University, Brooklyn, NY, USA
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Yoshida M, Turner PR, Ali MA, Cabral JD. Three-Dimensional Melt-Electrowritten Polycaprolactone/Chitosan Scaffolds Enhance Mesenchymal Stem Cell Behavior. ACS APPLIED BIO MATERIALS 2021; 4:1319-1329. [PMID: 35014483 DOI: 10.1021/acsabm.0c01213] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Melt electrowriting (MEW) is an emerging technique that precisely fabricates microfibrous scaffolds, ideal for tissue engineering, where biomimetic microarchitectural detail is required. Polycaprolactone (PCL), a synthetic polymer, was selected as the scaffold material due to its biocompatibility, biodegradability, mechanical strength, and melt processability. To increase PCL bioactivity, a natural polymer, chitosan, was added to construct MEW fibrous composite scaffolds. To date, this is the first study of its kind detailing the effects of stem cell behavior on PCL containing chitosan MEW scaffolds. The aim of this study was to melt electrowrite a range of PCL/chitosan tissue-engineered constructs (TECs) and assess their suitability to promote the growth of human bone-marrow-derived mesenchymal stem cells (hBMSCs). In vitro physical and biological characterizations of melt-electrowritten TECs were performed. Physical characterization showed that reproducible, layered micron-range scaffolds could be successfully fabricated. As well, cell migration and proliferation were assessed via an assay to monitor cell infiltration throughout the three-dimensional (3D) melt-electrowritten scaffold structure. A statistically significant increase (∼140%) in hBMSC proliferation in 1 wt % chitosan PCL blends in comparison to PCL-only scaffolds was found when monitored over two weeks. Overall, our study demonstrates the fabrication of melt-electrowritten PCL/chitosan composite scaffolds with controlled microarchitecture and their potential use for regenerative, tissue engineering applications.
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Affiliation(s)
- Minami Yoshida
- Centre for Bioengineering & Nanomedicine, Department of Food Science, University of Otago, 362 Leith Street, North Dunedin, Dunedin 9016, New Zealand
| | - Paul R Turner
- Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
| | - M Azam Ali
- Centre for Bioengineering & Nanomedicine, Department of Food Science, University of Otago, 362 Leith Street, North Dunedin, Dunedin 9016, New Zealand
| | - Jaydee D Cabral
- Centre for Bioengineering & Nanomedicine, Department of Food Science, University of Otago, 362 Leith Street, North Dunedin, Dunedin 9016, New Zealand.,Department of Chemistry, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
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Liu PR, Lu L, Zhang JY, Huo TT, Liu SX, Ye ZW. Application of Artificial Intelligence in Medicine: An Overview. Curr Med Sci 2021; 41:1105-1115. [PMID: 34874486 PMCID: PMC8648557 DOI: 10.1007/s11596-021-2474-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 12/01/2020] [Indexed: 02/06/2023]
Abstract
Artificial intelligence (AI) is a new technical discipline that uses computer technology to research and develop the theory, method, technique, and application system for the simulation, extension, and expansion of human intelligence. With the assistance of new AI technology, the traditional medical environment has changed a lot. For example, a patient's diagnosis based on radiological, pathological, endoscopic, ultrasonographic, and biochemical examinations has been effectively promoted with a higher accuracy and a lower human workload. The medical treatments during the perioperative period, including the preoperative preparation, surgical period, and postoperative recovery period, have been significantly enhanced with better surgical effects. In addition, AI technology has also played a crucial role in medical drug production, medical management, and medical education, taking them into a new direction. The purpose of this review is to introduce the application of AI in medicine and to provide an outlook of future trends.
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Affiliation(s)
- Peng-ran Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022 China
| | - Lin Lu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022 China
| | - Jia-yao Zhang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022 China
| | - Tong-tong Huo
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022 China
| | - Song-xiang Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022 China
| | - Zhe-wei Ye
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022 China
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Qureshi UA, Calaguas S, Frank E, Inman J. Implications of Applying New Technology in Cosmetic and Reconstructive Facial Plastic Surgery. Facial Plast Surg 2020; 36:760-767. [PMID: 33368133 DOI: 10.1055/s-0040-1721116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
The field of facial plastic and reconstructive surgery is privy to a myriad of technological advancements. As innovation in areas such as imaging, computer applications, and biomaterials progresses at breakneck speed, the potential for clinical application is endless. This review of recent progress in the implementation of new technologies in facial plastic surgery highlights some of the most innovative and impactful developments in the past few years of literature. Patient-specific surgical modeling has become the gold standard for oncologic and posttraumatic reconstructive surgery, with demonstrated improvements in operative times, restoration of anatomical structure, and patient satisfaction. Similarly, reductions in revision rates with improvements in learner technical proficiency have been noted with the use of patient-specific models in free flap reconstruction. In the cosmetic realm, simulation-based rhinoplasty implants have drastically reduced operative times while concurrently raising patient postoperative ratings of cosmetic appearance. Intraoperative imaging has also seen recent expansion in its adoption driven largely by reports of eradication of postoperative imaging and secondary-often complicated-revision reconstructions. A burgeoning area likely to deliver many advances in years to come is the integration of bioprinting into reconstructive surgery. Although yet to clearly make the translational leap, the implications of easily generatable induced pluripotent stem cells in replacing autologous, cadaveric, or synthetic tissues in surgical reconstruction are remarkable.
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Affiliation(s)
| | - Shannon Calaguas
- Department of Otolaryngology, Loma Linda University, Loma Linda, California
| | - Ethan Frank
- Department of Otolaryngology, Loma Linda University, Loma Linda, California
| | - Jared Inman
- Department of Otolaryngology, Loma Linda University, Loma Linda, California
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Genova T, Roato I, Carossa M, Motta C, Cavagnetto D, Mussano F. Advances on Bone Substitutes through 3D Bioprinting. Int J Mol Sci 2020; 21:E7012. [PMID: 32977633 PMCID: PMC7582371 DOI: 10.3390/ijms21197012] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 12/21/2022] Open
Abstract
Reconstruction of bony defects is challenging when conventional grafting methods are used because of their intrinsic limitations (biological cost and/or biological properties). Bone regeneration techniques are rapidly evolving since the introduction of three-dimensional (3D) bioprinting. Bone tissue engineering is a branch of regenerative medicine that aims to find new solutions to treat bone defects, which can be repaired by 3D printed living tissues. Its aim is to overcome the limitations of conventional treatment options by improving osteoinduction and osteoconduction. Several techniques of bone bioprinting have been developed: inkjet, extrusion, and light-based 3D printers are nowadays available. Bioinks, i.e., the printing materials, also presented an evolution over the years. It seems that these new technologies might be extremely promising for bone regeneration. The purpose of the present review is to give a comprehensive summary of the past, the present, and future developments of bone bioprinting and bioinks, focusing the attention on crucial aspects of bone bioprinting such as selecting cell sources and attaining a viable vascularization within the newly printed bone. The main bioprinters currently available on the market and their characteristics have been taken into consideration, as well.
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Affiliation(s)
- Tullio Genova
- Department of Life Sciences and Systems Biology, University of Torino, via Accademia Albertina 13, 10123 Torino, Italy;
- Department of Surgical Sciences, University of Torino, via Nizza 230, 10126 Torino, Italy; (I.R.); (M.C.); (C.M.); (F.M.)
| | - Ilaria Roato
- Department of Surgical Sciences, University of Torino, via Nizza 230, 10126 Torino, Italy; (I.R.); (M.C.); (C.M.); (F.M.)
- Center for Research and Medical Studies, A.O.U. Città della Salute e della Scienza, 10100 Turin, Italy
| | - Massimo Carossa
- Department of Surgical Sciences, University of Torino, via Nizza 230, 10126 Torino, Italy; (I.R.); (M.C.); (C.M.); (F.M.)
| | - Chiara Motta
- Department of Surgical Sciences, University of Torino, via Nizza 230, 10126 Torino, Italy; (I.R.); (M.C.); (C.M.); (F.M.)
| | - Davide Cavagnetto
- Department of Surgical Sciences, University of Torino, via Nizza 230, 10126 Torino, Italy; (I.R.); (M.C.); (C.M.); (F.M.)
| | - Federico Mussano
- Department of Surgical Sciences, University of Torino, via Nizza 230, 10126 Torino, Italy; (I.R.); (M.C.); (C.M.); (F.M.)
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Lim HK, Hong SJ, Byeon SJ, Chung SM, On SW, Yang BE, Lee JH, Byun SH. 3D-Printed Ceramic Bone Scaffolds with Variable Pore Architectures. Int J Mol Sci 2020; 21:ijms21186942. [PMID: 32971749 PMCID: PMC7555666 DOI: 10.3390/ijms21186942] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 02/07/2023] Open
Abstract
This study evaluated the mechanical properties and bone regeneration ability of 3D-printed pure hydroxyapatite (HA)/tricalcium phosphate (TCP) pure ceramic scaffolds with variable pore architectures. A digital light processing (DLP) 3D printer was used to construct block-type scaffolds containing only HA and TCP after the polymer binder was completely removed by heat treatment. The compressive strength and porosity of the blocks with various structures were measured; scaffolds with different pore sizes were implanted in rabbit calvarial models. The animals were observed for eight weeks, and six animals were euthanized in the fourth and eighth weeks. Then, the specimens were evaluated using radiological and histological analyses. Larger scaffold pore sizes resulted in enhanced bone formation after four weeks (p < 0.05). However, in the eighth week, a correlation between pore size and bone formation was not observed (p > 0.05). The findings showed that various pore architectures of HA/TCP scaffolds can be achieved using DLP 3D printing, which can be a valuable tool for optimizing bone-scaffold properties for specific clinical treatments. As the pore size only influenced bone regeneration in the initial stage, further studies are required for pore-size optimization to balance the initial bone regeneration and mechanical strength of the scaffold.
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Affiliation(s)
- Ho-Kyung Lim
- Department of Oral and Maxillofacial Surgery, Korea University Guro Hospital, Seoul 08308, Korea;
| | - Seok-Jin Hong
- Department of Otorhinolaryngology-Head & Neck Surgery, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Dongtan 18450, Korea;
| | - Sun-Ju Byeon
- Department of Pathology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Dongtan 18450, Korea;
| | | | - Sung-Woon On
- Department of Oral and Maxillofacial Surgery, Dentistry, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Dongtan 18450, Korea;
- Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Korea;
| | - Byoung-Eun Yang
- Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Korea;
- Department of Oral and Maxillofacial Surgery, Dentistry, Sacred Heart Hospital, Hallym University College of Medicine, Anyang 14068, Korea
| | - Jong-Ho Lee
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul 03080, Korea;
| | - Soo-Hwan Byun
- Graduate School of Clinical Dentistry, Hallym University, Chuncheon 24252, Korea;
- Department of Oral and Maxillofacial Surgery, Dentistry, Sacred Heart Hospital, Hallym University College of Medicine, Anyang 14068, Korea
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul 03080, Korea;
- Correspondence: ; Tel.: +82-10-8787-2640
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Toledo Stuani VD, do Prado Manfredi GG, Miyahara Kondo VA, Noritomi PY, Lisboa-Filho PN, Passanezi Sant’Ana AC. The use of additively manufactured scaffolds for treating gingival recession associated with interproximal defects. ACTA ACUST UNITED AC 2020. [DOI: 10.2217/3dp-2020-0008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Gingival recessions are a highly prevalent issue that is often associated with interproximal tissue deficiency. An intervention in these scenarios is of extreme importance since these defects can lead to aesthetic, phonetic and other dental problems. Unfortunately, the treatment of advanced gingival recessions is a major challenge in periodontics because of its unpredictability. In such cases, the use of injectable fillings, connective tissue grafts or bone grafts for vertical regeneration in interproximal area presents limited results. Considering that, this special report reviewed the possible use of additively manufactured scaffolds as a therapeutic option. A 3D-printed personalized therapy is expected to simplify the regeneration of interproximal area, enabling bone regeneration, new papilla formation and root coverage.
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Affiliation(s)
- Vitor de Toledo Stuani
- Discipline of Periodontology, Bauru School of Dentistry – University of Sao Paulo, Bauru, Brazil
| | | | | | - Pedro Yoshito Noritomi
- Nucleus of Three-Dimensional Technologies (NT3D), Center for Information Technology Renato Archer, Campinas, Brazil
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