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Nasiri-Tabrizi B, Basirun WJ, Walvekar R, Yeong CH, Phang SW. Exploring the potential of intermetallic alloys as implantable biomaterials: A comprehensive review. BIOMATERIALS ADVANCES 2024; 161:213854. [PMID: 38703541 DOI: 10.1016/j.bioadv.2024.213854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 04/07/2024] [Accepted: 04/08/2024] [Indexed: 05/06/2024]
Abstract
This review delves into the utilization of intermetallic alloys (IMAs) as advanced biomaterials for medical implants, scrutinizing their conceptual framework, fabrication challenges, and diverse manufacturing techniques such as casting, powder metallurgy, and additive manufacturing. Manufacturing techniques such as casting, powder metallurgy, additive manufacturing, and injection molding are discussed, with specific emphasis on achieving optimal grain sizes, surface roughness, and mechanical properties. Post-treatment methods aimed at refining surface quality, dimensional precision, and mechanical properties of IMAs are explored, including the use of heat treatments to enhance biocompatibility and corrosion resistance. The review presents an in-depth examination of IMAs-based implantable biomaterials, covering lab-scale developments and commercial-scale implants. Specific IMAs such as Nickel Titanium, Titanium Aluminides, Iron Aluminides, Magnesium-based IMAs, Zirconium-based IMAs, and High-entropy alloys (HEAs) are highlighted, with detailed discussions on their mechanical properties, including strength, elastic modulus, and corrosion resistance. Future directions are outlined, with an emphasis on the anticipated growth in the orthopedic devices market and the role of IMAs in meeting this demand. The potential of porous IMAs in orthopedics is explored, with emphasis on achieving optimal pore sizes and distributions for enhanced osseointegration. The review concludes by highlighting the ongoing need for research and development efforts in IMAs technologies, including advancements in design and fabrication techniques.
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Affiliation(s)
- Bahman Nasiri-Tabrizi
- Faculty of Innovation and Technology, School of Engineering, Chemical Engineering Programme, No.1 Jalan Taylor's, Taylor's University Malaysia, 47500 Subang Jaya, Selangor, Malaysia.
| | - Wan Jefrey Basirun
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Rashmi Walvekar
- Faculty of Innovation and Technology, School of Engineering, Chemical Engineering Programme, No.1 Jalan Taylor's, Taylor's University Malaysia, 47500 Subang Jaya, Selangor, Malaysia; Chitkara Centre for Research and Development, Chitkara University, Himachal Pradesh 174103, India
| | - Chai Hong Yeong
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, 47500 Subang Jaya, Malaysia
| | - Siew Wei Phang
- Faculty of Innovation and Technology, School of Engineering, Chemical Engineering Programme, No.1 Jalan Taylor's, Taylor's University Malaysia, 47500 Subang Jaya, Selangor, Malaysia
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Matsko A, Shaker N, Fernandes ACBCJ, Haimeur A, França R. Nanoscale Chemical Surface Analyses of Recycled Powder for Direct Metal Powder Bed Fusion Ti-6Al-4V Root Analog Dental Implant: An X-ray Photoelectron Spectroscopy Study. Bioengineering (Basel) 2023; 10:bioengineering10030379. [PMID: 36978770 PMCID: PMC10045388 DOI: 10.3390/bioengineering10030379] [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: 01/29/2023] [Revised: 03/15/2023] [Accepted: 03/16/2023] [Indexed: 03/30/2023] Open
Abstract
Over the past couple of decades, additive manufacturing and the use of root-analogue-printed titanium dental implants have been developed. Not all powder particles are sintered into the final product during the additive manufacturing process. Reuse of the remaining powder could reduce the overall implant manufacturing cost. However, Ti-6Al-4V powder particles are affected by heat, mechanical factors, and oxidization during the powder bed fusion manufacturing process. Degradation of the powder may harm the final surface composition and decrease the biocompatibility and survival of the implant. The uncertainty of the recycled powder properties prevents implant fabrication facilities from reusing the powder. This study investigates the chemical composition of controlled, clean, and recycled titanium alloy powder and root-analogue implants (RAI) manufactured from these powders at three different depths. The change in titanium's quantity, oxidization state, and chemical composition in powder and RAI implants have been demonstrated and analyzed. While not identical, the surface chemical composition of the recycled powder implant and the implant manufactured from unused powder are similar. The results also indicate the presence of TiO2 on all surfaces. Many studies confirmed that titanium dioxide on the implant's surface correlates with better osteointegration, reduced bacterial infection, and increased corrosion resistance. Considering economic and environmental aspects, surface chemical composition comparison of clean and reused powder is crucial for the future manufacturing of cost-effective and biocompatible implants.
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Affiliation(s)
- Anastasia Matsko
- Biomedical Engineering Program, Faculty of Engineering University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Nader Shaker
- Department of Restorative Dentistry, College of Dentistry, University of Manitoba, Winnipeg, MB R3E 0W2, Canada
| | - Ana Carla B C J Fernandes
- Department of Oral Biology, College of Dentistry, University of Manitoba, Winnipeg, MB R3E 0W2, Canada
| | - Asmaa Haimeur
- Department of Restorative Dentistry, College of Dentistry, University of Manitoba, Winnipeg, MB R3E 0W2, Canada
| | - Rodrigo França
- Department of Restorative Dentistry, College of Dentistry, University of Manitoba, Winnipeg, MB R3E 0W2, Canada
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Zhou Q, Su X, Wu J, Zhang X, Su R, Ma L, Sun Q, He R. Additive Manufacturing of Bioceramic Implants for Restoration Bone Engineering: Technologies, Advances, and Future Perspectives. ACS Biomater Sci Eng 2023; 9:1164-1189. [PMID: 36786214 DOI: 10.1021/acsbiomaterials.2c01164] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Treating bone defects is highly challenging because they do not heal on their own inside the patients, so implants are needed to assist in the reconstruction of the bone. Bioceramic implants based on additive manufacturing (AM) are currently emerging as promising treatment options for restoration bone engineering. On the one hand, additively manufactured bioceramic implants have excellent mechanical properties and biocompatibility, which are suitable for bone regeneration. On the other hand, the designable structure and adjustable pores of additively manufactured bioceramic implants allow them to promote suitable cell growth and tissue climbing. Herein, this review unfolds to introduce several frequently employed AM technologies for bioceramic implants. After that, advances in commonly used additively manufactured bioceramic implants, including bioinert ceramic implants, bioactive ceramic implants, and bioceramic/organic composite implants, are categorized and summarized. Finally, the future perspectives of additively manufactured bioceramic implants, in terms of mechanical performance improvement, innovative structural design, biological property enhancement, and other functionalization approaches, are proposed and forecasted. This review is believed to provide some fundamental understanding and cutting-edge knowledge for the additive manufacturing of bioceramic implants for restoration bone engineering.
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Affiliation(s)
- Qing Zhou
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Xiaonan Su
- Beijing Scrianen Pharmaceutical Co. Ltd., Beijing 102699, China
| | - Jianqin Wu
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Xueqin Zhang
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Ruyue Su
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Lili Ma
- Center of Dental Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Qiang Sun
- Center of Dental Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Rujie He
- Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China
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4
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Dias Corpa Tardelli J, Duarte Firmino AC, Ferreira I, Cândido dos Reis A. Influence of the roughness of dental implants obtained by additive manufacturing on osteoblastic adhesion and proliferation: A systematic review. Heliyon 2022; 8:e12505. [PMID: 36643331 PMCID: PMC9834751 DOI: 10.1016/j.heliyon.2022.e12505] [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: 06/20/2022] [Revised: 10/29/2022] [Accepted: 12/13/2022] [Indexed: 12/26/2022] Open
Abstract
Objective Critically analyzed the existing literature to answer the question "What is the influence of roughness of surfaces for dental implants obtained by additive manufacturing compared to machined on osteoblastic cell adhesion and proliferation?" Design This systematic review followed the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and was registered in the Open Science Framework. The personalized search strategy was applied to Embase, Pub Med, Scopus, and Science Direct databases and Google Scholar and ProQuest grey literature. The selection process was carried out in two stages independently by two reviewers according to the eligibility criteria. The risk of bias was analyzed using a checklist of important parameters to be considered. Results When applying the search strategy on databases 223 articles were found, after removing the duplicates, 171 were analyzed by title and abstract of which 25 were selected for full reading, of these, 6 met the eligibility criteria. 2 studies were included from the reference list totaling 8 articles included in this systematic review and none were included from the Grey Literature. 7 had a low risk of bias and 1 moderate. Conclusions 1) Roughness is a property that must be analyzed and correlated with the chemical composition, intrinsic to the alloy and resulting from the surface treatment; morphology of topographic peaks and valleys; printing technique and its parameters; 2) Need for more studies on the biomolecular level to elucidate the mechanism by which the roughness and the morphology of topographical peaks and valleys descriptive of roughness influence osteoblastic adhesion and proliferation.
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Alipour S, Nour S, Attari SM, Mohajeri M, Kianersi S, Taromian F, Khalkhali M, Aninwene GE, Tayebi L. A review on in vitro/ in vivo response of additively manufactured Ti-6Al-4V alloy. J Mater Chem B 2022; 10:9479-9534. [PMID: 36305245 DOI: 10.1039/d2tb01616h] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Bone replacement using porous and solid metallic implants, such as Ti-alloy implants, is regarded as one of the most practical therapeutic approaches in biomedical engineering. The bone is a complex tissue with various mechanical properties based on the site of action. Patient-specific Ti-6Al-4V constructs may address the key needs in bone treatment for having customized implants that mimic the complex structure of the natural tissue and diminish the risk of implant failure. This review focuses on the most promising methods of fabricating such patient-specific Ti-6Al-4V implants using additive manufacturing (AM) with a specific emphasis on the popular subcategory, which is powder bed fusion (PBF). Characteristics of the ideal implant to promote optimized tissue-implant interactions, as well as physical, mechanical/chemical treatments and modifications will be discussed. Accordingly, such investigations will be classified into 3B-based approaches (Biofunctionality, Bioactivity, and Biostability), which mainly govern native body response and ultimately the success in implantation.
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Affiliation(s)
- Saeid Alipour
- Department of Materials Science and Engineering, Missouri University of Science and Technology, Rolla, MO 65409, USA
| | - Shirin Nour
- Tissue Engineering Group, Department of Biomedical Engineering, University of Melbourne, VIC 3010, Australia.,Polymer Science Group, Department of Chemical Engineering, University of Melbourne, VIC 3010, Australia
| | - Seyyed Morteza Attari
- Department of Material Science and Engineering, University of Connecticut, Storrs, Connecticut, USA
| | - Mohammad Mohajeri
- Department of Biomedical Engineering, College of Engineering, Texas A&M University, TX, USA
| | - Sogol Kianersi
- CÚRAM, SFI Centre for Research in Medical Devices, Biomedical Sciences, University of Galway, Galway, Ireland
| | - Farzaneh Taromian
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Mohammadparsa Khalkhali
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - George E Aninwene
- Department of Bioengineering, Henry Samueli School of Engineering and Applied Sciences, University of California-Los Angeles, Los Angeles, California, USA.,Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, California, USA.,California NanoSystems Institute (CNSI), University of California-Los Angeles, Los Angeles, California, USA
| | - Lobat Tayebi
- School of Dentistry, Marquette University, Milwaukee, Wisconsin, USA.
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Veiko V, Karlagina Y, Zernitckaia E, Egorova E, Radaev M, Yaremenko A, Chernenko G, Romanov V, Shchedrina N, Ivanova E, Chichkov B, Odintsova G. Laser-Induced µ-Rooms for Osteocytes on Implant Surface: An In Vivo Study. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4229. [PMID: 36500852 PMCID: PMC9737095 DOI: 10.3390/nano12234229] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 11/21/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Laser processing of dental implant surfaces is becoming a more widespread replacement for classical techniques due to its undeniable advantages, including control of oxide formation and structure and surface relief at the microscale. Thus, using a laser, we created several biomimetic topographies of various shapes on the surface of titanium screw-shaped implants to research their success and survival rates. A distinctive feature of the topographies is the presence of "µ-rooms", which are special spaces created by the depressions and elevations and are analogous to the µ-sized room in which the osteocyte will potentially live. We conducted the comparable in vivo study using dental implants with continuous (G-topography with µ-canals), discrete (S-topography with μ-cavities), and irregular (I-topography) laser-induced topographies. A histological analysis performed with the statistical method (with p-value less than 0.05) was conducted, which showed that G-topography had the highest BIC parameter and contained the highest number of mature osteocytes, indicating the best secondary stability and osseointegration.
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Affiliation(s)
- Vadim Veiko
- Institute of Laser Technologies, ITMO University, Saint-Petersburg 197101, Russia
| | - Yuliya Karlagina
- Institute of Laser Technologies, ITMO University, Saint-Petersburg 197101, Russia
| | - Ekaterina Zernitckaia
- Department of Dental Surgery and Maxillofacial Surgery, Pavlov First Saint-Petersburg State Medical University, Saint-Petersburg 197022, Russia
| | - Elena Egorova
- Institute of Laser Technologies, ITMO University, Saint-Petersburg 197101, Russia
| | - Maxim Radaev
- Institute of Laser Technologies, ITMO University, Saint-Petersburg 197101, Russia
| | - Andrey Yaremenko
- Department of Dental Surgery and Maxillofacial Surgery, Pavlov First Saint-Petersburg State Medical University, Saint-Petersburg 197022, Russia
| | - Gennadiy Chernenko
- Lenmiriot Dental Implant Prosthetics Manufacture, Saint-Petersburg 193079, Russia
| | - Valery Romanov
- Institute of Laser Technologies, ITMO University, Saint-Petersburg 197101, Russia
| | - Nadezhda Shchedrina
- Institute of Laser Technologies, ITMO University, Saint-Petersburg 197101, Russia
| | - Elena Ivanova
- STEM, School of Science, RMIT University, Melbourne 3000, Australia
| | - Boris Chichkov
- Institute of Quantum Optics, Leibniz University of Hanover, 30167 Hannover, Germany
| | - Galina Odintsova
- Institute of Laser Technologies, ITMO University, Saint-Petersburg 197101, Russia
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7
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Wang S, Zhang M, Liu L, Xu R, Huang Z, Shi Z, Liu J, Li Z, Li X, Hao P, Hao Y. Femtosecond laser treatment promotes the surface bioactivity and bone ingrowth of Ti6Al4V bone scaffolds. Front Bioeng Biotechnol 2022; 10:962483. [PMID: 36213066 PMCID: PMC9537346 DOI: 10.3389/fbioe.2022.962483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 08/26/2022] [Indexed: 12/05/2022] Open
Abstract
In this study, a femtosecond laser with a wavelength of 800 nm was used to modify the surface of a titanium alloy bone scaffold created via selective laser melting (SLM). The outcomes demonstrated that the surface morphology of the bone scaffold after femtosecond laser treatment was micro-nano morphology. The hydrophobic structure of the scaffold was changed into a super-hydrophilic structure, improving the surface roughness, which was highly helpful for osteoblast adhesion and differentiation. The femtosecond laser surface treatment in vitro samples produced a thick layer of hydroxyapatite (HAP) with improved surface bioactivity. The effectiveness of osseointegration and interstitial growth of the specimens treated with the femtosecond laser surface were found to be better when bone scaffolds were implanted into the epiphysis of the tibia of rabbits. As a result, femtosecond laser therapy dramatically enhanced the surface activity of bone scaffolds and their capacity to integrate with the surrounding bone tissues, serving as a trustworthy benchmark for future biological scaffold research.
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Affiliation(s)
- Su Wang
- School of Mechanical Engineering, Sichuan University, Chengdu, China
| | - Miao Zhang
- School of Mechanical Engineering, Sichuan University, Chengdu, China
- *Correspondence: Miao Zhang, ; Zhong Li, ; Xiaohong Li,
| | - Linlin Liu
- School of Mechanical Engineering, Sichuan University, Chengdu, China
| | - Rongwei Xu
- School of Mechanical Engineering, Sichuan University, Chengdu, China
| | - Zhili Huang
- School of Mechanical Engineering, Sichuan University, Chengdu, China
| | - Zhang’ao Shi
- School of Mechanical Engineering, Sichuan University, Chengdu, China
| | - Juncai Liu
- Department of Orthopaedics, The Affiliated Hospital of Southwest Medical University, Sichuan Provincial Laboratory of Orthopedics Engineering, Luzhou, China
| | - Zhong Li
- Department of Orthopaedics, The Affiliated Hospital of Southwest Medical University, Sichuan Provincial Laboratory of Orthopedics Engineering, Luzhou, China
- *Correspondence: Miao Zhang, ; Zhong Li, ; Xiaohong Li,
| | - Xiaohong Li
- School of Science, Southwest University of Science and Technology, Mianyang, China
- *Correspondence: Miao Zhang, ; Zhong Li, ; Xiaohong Li,
| | - Peng Hao
- Sichuan Provincial People’s Hospital, Chengdu, China
| | - Yongqiang Hao
- Department of Orthopedics Surgery, Ninth People’s Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Zhang Y, Habibovic P. Delivering Mechanical Stimulation to Cells: State of the Art in Materials and Devices Design. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2110267. [PMID: 35385176 DOI: 10.1002/adma.202110267] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/19/2022] [Indexed: 06/14/2023]
Abstract
Biochemical signals, such as growth factors, cytokines, and transcription factors are known to play a crucial role in regulating a variety of cellular activities as well as maintaining the normal function of different tissues and organs. If the biochemical signals are assumed to be one side of the coin, the other side comprises biophysical cues. There is growing evidence showing that biophysical signals, and in particular mechanical cues, also play an important role in different stages of human life ranging from morphogenesis during embryonic development to maturation and maintenance of tissue and organ function throughout life. In order to investigate how mechanical signals influence cell and tissue function, tremendous efforts have been devoted to fabricating various materials and devices for delivering mechanical stimuli to cells and tissues. Here, an overview of the current state of the art in the design and development of such materials and devices is provided, with a focus on their design principles, and challenges and perspectives for future research directions are highlighted.
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Affiliation(s)
- Yonggang Zhang
- Department of Instructive Biomaterials Engineering, Maastricht University, MERLN Institute for Technology-Inspired Regenerative Medicine, Universiteitssingel 40, Maastricht, 6229 ER, The Netherlands
| | - Pamela Habibovic
- Department of Instructive Biomaterials Engineering, Maastricht University, MERLN Institute for Technology-Inspired Regenerative Medicine, Universiteitssingel 40, Maastricht, 6229 ER, The Netherlands
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Davis R, Singh A, Jackson MJ, Coelho RT, Prakash D, Charalambous CP, Ahmed W, da Silva LRR, Lawrence AA. A comprehensive review on metallic implant biomaterials and their subtractive manufacturing. THE INTERNATIONAL JOURNAL, ADVANCED MANUFACTURING TECHNOLOGY 2022; 120:1473-1530. [PMID: 35228769 PMCID: PMC8865884 DOI: 10.1007/s00170-022-08770-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 01/17/2022] [Indexed: 05/08/2023]
Abstract
There is a tremendous increase in the demand for converting biomaterials into high-quality industrially manufactured human body parts, also known as medical implants. Drug delivery systems, bone plates, screws, cranial, and dental devices are the popular examples of these implants - the potential alternatives for human life survival. However, the processing techniques of an engineered implant largely determine its preciseness, surface characteristics, and interactive ability with the adjacent tissue(s) in a particular biological environment. Moreover, the high cost-effective manufacturing of an implant under tight tolerances remains a challenge. In this regard, several subtractive or additive manufacturing techniques are employed to manufacture patient-specific implants, depending primarily on the required biocompatibility, bioactivity, surface integrity, and fatigue strength. The present paper reviews numerous non-degradable and degradable metallic implant biomaterials such as stainless steel (SS), titanium (Ti)-based, cobalt (Co)-based, nickel-titanium (NiTi), and magnesium (Mg)-based alloys, followed by their processing via traditional turning, drilling, and milling including the high-speed multi-axis CNC machining, and non-traditional abrasive water jet machining (AWJM), laser beam machining (LBM), ultrasonic machining (USM), and electric discharge machining (EDM) types of subtractive manufacturing techniques. However, the review further funnels down its primary focus on Mg, NiTi, and Ti-based alloys on the basis of the increasing trend of their implant applications in the last decade due to some of their outstanding properties. In the recent years, the incorporation of cryogenic coolant-assisted traditional subtraction of biomaterials has gained researchers' attention due to its sustainability, environment-friendly nature, performance, and superior biocompatible and functional outcomes fitting for medical applications. However, some of the latest studies reported that the medical implant manufacturing requirements could be more remarkably met using the non-traditional subtractive manufacturing approaches. Altogether, cryogenic machining among the traditional routes and EDM among the non-traditional means along with their variants, were identified as some of the most effective subtractive manufacturing techniques for achieving the dimensionally accurate and biocompatible metallic medical implants with significantly modified surfaces.
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Affiliation(s)
- Rahul Davis
- Department of Mechanical Engineering, National Institute of Technology Patna, Patna, 800005 India
- Department of Mechanical Engineering, Vaugh Institute of Agricultural Engineering and Technology, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, 211007 India
| | - Abhishek Singh
- Department of Mechanical Engineering, National Institute of Technology Patna, Patna, 800005 India
| | - Mark James Jackson
- School of Integrated Studies, College of Technology and Aviation, Kansas State University, Salina, KS 67401 USA
| | | | - Divya Prakash
- Department of Mechanical Engineering, Vaugh Institute of Agricultural Engineering and Technology, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, 211007 India
| | | | - Waqar Ahmed
- School of Mathematics and Physics, College of Science, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS UK
| | - Leonardo Rosa Ribeiro da Silva
- School of Mechanical Engineering, Federal University of Uberlandia, Av. João Naves de Ávila, Uberlândia, MG 38400-902 Brazil
| | - Abner Ankit Lawrence
- Department of Mechanical Engineering, Vaugh Institute of Agricultural Engineering and Technology, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, 211007 India
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10
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Influence of Successive Chemical and Thermochemical Treatments on Surface Features of Ti6Al4V Samples Manufactured by SLM. METALS 2021. [DOI: 10.3390/met11020313] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ti6Al4V samples, obtained by selective laser melting (SLM), were subjected to successive treatments: acid etching, chemical oxidation in hydrogen peroxide solution and thermochemical processing. The effect of temperature and time of acid etching on the surface roughness, morphology, topography and chemical and phase composition after the thermochemical treatment was studied. The surfaces were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and contact profilometry. The temperature used in the acid etching had a greater influence on the surface features of the samples than the time. Acid etching provided the original SLM surface with a new topography prior to oxidation and thermochemical treatments. A nanostructure was observed on the surfaces after the full process, both on their protrusions and pores previously formed during the acid etching. After the thermochemical treatment, the samples etched at 40 °C showed macrostructures with additional submicro and nanoscale topographies. When a temperature of 80 °C was used, the presence of micropores and a thicker anatase layer, detectable by X-ray diffraction, were also observed. These surfaces are expected to generate greater levels of bioactivity and high biomechanics fixation of implants as well as better resistance to fatigue.
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11
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Abstract
Selective laser melting (SLM) is emerging as a promising 3D printing method for orthopedic and dental applications. However, SLM-based Ti6Al4V components frequently exhibit high roughness values and partial surface defects. Laser polishing (LP) is a newly developed technology to improve the surface quality of metals. In this research, LP is applied to improve the surface finish of components. The results show that the laser beam can neatly ablate the aggregates of metallic globules and repair cracks and pores on the surface, resulting in a smooth surface with nanocomposites. Overall, the results indicate that using LP optimizes surface morphology to favor fatigue behavior and osteoblastic differentiation. These findings provide foundational data to improve the surface roughness of a laser-polished implant and pave the way for optimized mechanical behavior and biocompatibility via the laser process.
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