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Deans C, Zitsch B, Kildow BJ, Garvin KL. Cementless Total Knee Arthroplasty: Is it Safe in Demineralized Bone? Orthop Clin North Am 2024; 55:333-343. [PMID: 38782505 DOI: 10.1016/j.ocl.2024.02.003] [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] [Indexed: 05/25/2024]
Abstract
There is concern for cementless total knee arthroplasty (TKA) in patients with decreased bone mineral density (BMD) due to the potential increase in complications, namely failed in-growth or future aseptic loosening. Some data suggest that advances in cementless prostheses mitigate these risks; however this is not yet born out in long-term registry data. It is crucial to expand our understanding of the prevalence and etiology of osteoporosis in TKA patients, survivorship of cementless implants in decreased BMD, role of bone-modifying agents, indications and technical considerations for cementless TKA in patients with decreased BMD. The purpose of this study is to review current literature and expert opinion on such topics.
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Affiliation(s)
- Christopher Deans
- Department of Orthopaedic Surgery and Rehabilitation, University of Nebraska Medical Center, 985640 Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Bradford Zitsch
- Department of Orthopaedic Surgery and Rehabilitation, University of Nebraska Medical Center, 985640 Nebraska Medical Center, Omaha, NE 68198, USA
| | - Beau J Kildow
- Department of Orthopaedic Surgery and Rehabilitation, University of Nebraska Medical Center, 985640 Nebraska Medical Center, Omaha, NE 68198, USA
| | - Kevin L Garvin
- Department of Orthopaedic Surgery and Rehabilitation, University of Nebraska Medical Center, 985640 Nebraska Medical Center, Omaha, NE 68198, USA
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2
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Joshua RJN, Raj SA, Hameed Sultan MT, Łukaszewicz A, Józwik J, Oksiuta Z, Dziedzic K, Tofil A, Shahar FS. Powder Bed Fusion 3D Printing in Precision Manufacturing for Biomedical Applications: A Comprehensive Review. MATERIALS (BASEL, SWITZERLAND) 2024; 17:769. [PMID: 38591985 PMCID: PMC10856375 DOI: 10.3390/ma17030769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 04/10/2024]
Abstract
Precision manufacturing requirements are the key to ensuring the quality and reliability of biomedical implants. The powder bed fusion (PBF) technique offers a promising solution, enabling the creation of complex, patient-specific implants with a high degree of precision. This technology is revolutionizing the biomedical industry, paving the way for a new era of personalized medicine. This review explores and details powder bed fusion 3D printing and its application in the biomedical field. It begins with an introduction to the powder bed fusion 3D-printing technology and its various classifications. Later, it analyzes the numerous fields in which powder bed fusion 3D printing has been successfully deployed where precision components are required, including the fabrication of personalized implants and scaffolds for tissue engineering. This review also discusses the potential advantages and limitations for using the powder bed fusion 3D-printing technology in terms of precision, customization, and cost effectiveness. In addition, it highlights the current challenges and prospects of the powder bed fusion 3D-printing technology. This work offers valuable insights for researchers engaged in the field, aiming to contribute to the advancement of the powder bed fusion 3D-printing technology in the context of precision manufacturing for biomedical applications.
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Affiliation(s)
- Rajan John Nekin Joshua
- Department of Manufacturing Engineering, School of Mechanical Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India;
| | - Sakthivel Aravind Raj
- Department of Manufacturing Engineering, School of Mechanical Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India;
| | - Mohamed Thariq Hameed Sultan
- Department of Aerospace Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
- Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
- Aerospace Malaysia Innovation Centre (944751-A), Prime Minister’s Department, MIGHT Partnership Hub, Jalan Impact, Cyberjaya 63000, Selangor, Malaysia
| | - Andrzej Łukaszewicz
- Institute of Mechanical Engineering, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45C, 15-351 Bialystok, Poland;
| | - Jerzy Józwik
- Department of Production Engineering, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland;
- Institute of Technical Sciences and Aviation, University College of Applied Sciences in Chełm, Pocztowa 54, 22-100 Chełm, Poland;
| | - Zbigniew Oksiuta
- Institute of Biomedical Engineering, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45C, 15-351 Bialystok, Poland;
| | - Krzysztof Dziedzic
- Institute of Computer Science, Electrical Engineering and Computer Science Faculty, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland;
| | - Arkadiusz Tofil
- Institute of Technical Sciences and Aviation, University College of Applied Sciences in Chełm, Pocztowa 54, 22-100 Chełm, Poland;
| | - Farah Syazwani Shahar
- Department of Aerospace Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia;
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Shou Z, Bai Z, Zhou H, Shen Y, Huang X, Meng H, Xu C, Wu S, Li N, Chen C. Engineering tunable dual peptide hybrid coatings promote osseointegration of implants. Mater Today Bio 2024; 24:100921. [PMID: 38226017 PMCID: PMC10788622 DOI: 10.1016/j.mtbio.2023.100921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/27/2023] [Accepted: 12/15/2023] [Indexed: 01/17/2024] Open
Abstract
Utilizing complementary bioactive peptides is a promising surface engineering strategy for bone regeneration on osteogenesis. In this study, we designed block peptides, (Lysine)6-capped RGD (K6-(linker-RGD)3) and OGP (K6-linker-(YGFGG)2), which were mildly grafted onto PC/Fe-MPNs through supramolecular interactions between K6 and PC residues on the MPNs surface to form a dual peptide coating, named PC/Fe@K6-RGD/OGP. The properties of the block peptides coating, including mechanics, hydrophilicity, chemical composition, etc., were detailly characterized by various techniques (ellipsometry, quartz crystal microbalance, X-ray photoelectron spectroscopy, water contact angle, scanning electronic microscopy and atomic force microscopy). Importantly, the RGD/OGP ratio can be well adjusted, which allowed optimizing the RGD/OGP ratio to endow significantly enhanced osteogenic activity of MC3T3-E1 cells through the Wnt/β-catenin pathway, while also promoting cell adhesion, immune regulation, inhibiting osteoclast differentiation and oxidative stress reduction. In vivo, the optimized RGD/OGP coatings promoted bone regeneration and osseointegration around implants in rats with bone defects. In conclusion, rationally designed PC/Fe@K6-RGD/OGP coating integrated RGD and OGP bioactivities, providing a convenient approach to enhance bioinert implant surfaces for bone regeneration.
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Affiliation(s)
- Zeyu Shou
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, People's Republic of China
| | - Zhibiao Bai
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Han Zhou
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Yizhe Shen
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Xiaojing Huang
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Hongming Meng
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Chenwei Xu
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Shaohao Wu
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Na Li
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, People's Republic of China
| | - Chun Chen
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
- Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, Wenzhou, 325000, Zhejiang, People's Republic of China
- Zhejiang Engineering Research Center for Hospital Emergency and Process Digitization, Wenzhou, Zhejiang, 325000, People's Republic of China
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4
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He X, Guo C, Wang Y, Ma S, Liu X, Wei Y, Xu H, Liang Z, Hu Y, Zhao L, Lian X, Huang D. Enhancing osseointegration of titanium implants through MC3T3-E1 protein-gelatin polyelectrolyte multilayers. J Biomed Mater Res B Appl Biomater 2024; 112:e35373. [PMID: 38359169 DOI: 10.1002/jbm.b.35373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 12/01/2023] [Accepted: 01/02/2024] [Indexed: 02/17/2024]
Abstract
Titanium and its alloys have found extensive use in the biomedical field, however, implant loosening due to weak osseointegration remains a concern. Improved surface morphology and chemical composition can enhance the osseointegration of the implant. Bioactive molecules have been utilized to modify the surface of the titanium-based material to achieve rapid and efficient osseointegration between the implant and bone tissues. In this study, the bioactive substance MC3T3-E1 protein-gelatin polyelectrolyte multilayers were constructed on the surface of the titanium implants by means of layer-by-layer self-assembly to enhance the strength of the bond between the bone tissue and the implant. The findings of the study indicate that the layer-by-layer self-assembly technique can enhance surface roughness and hydrophilicity to a considerable extent. Compared to pure titanium, the hydrophilicity of TiOH LBL was significantly increased with a water contact angle of 75.0 ± $$ \pm $$ 2.4°. The modified titanium implant exhibits superior biocompatibility and wound healing ability upon co-culture with cells. MC3T3-E1 cells were co-cultured with TiOH LBL for 1, 3, and 5 days and their viability was higher than 85%. In addition, the wound healing results demonstrate that TiOH LBL exhibited the highest migratory ability (243 ± 10 μm). Furthermore, after 7 days of osteogenic induction, the modified titanium implant significantly promotes osteoblast differentiation.
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Affiliation(s)
- Xuhong He
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
| | - Chaiqiong Guo
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
| | - Yuhui Wang
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
| | - Shilong Ma
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
| | - Xuanyu Liu
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
| | - Yan Wei
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, China
| | - Haofeng Xu
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
| | - Ziwei Liang
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, China
| | - Yinchun Hu
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, China
| | - Liqin Zhao
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, China
| | - Xiaojie Lian
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, China
| | - Di Huang
- Department of Biomedical Engineering, Research Center for Nano-biomaterials & Regenerative Medicine, College of Biomedical Engineering, Shanxi Key Laboratory of Materials Strength & Structural Impact, Taiyuan University of Technology, Taiyuan, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, China
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5
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Abdulghafor MA, Mahmood MK, Tassery H, Tardivo D, Falguiere A, Lan R. Biomimetic Coatings in Implant Dentistry: A Quick Update. J Funct Biomater 2023; 15:15. [PMID: 38248682 PMCID: PMC10816551 DOI: 10.3390/jfb15010015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/23/2024] Open
Abstract
Biomimetic dental implants are regarded as one of the recent clinical advancements in implant surface modification. Coatings with varying thicknesses and roughness may affect the dental implant surface's chemical inertness, cell adhesion, and antibacterial characteristics. Different surface coatings and mechanical surface changes have been studied to improve osseointegration and decrease peri-implantitis. The surface medication increases surface energy, leading to enhanced cell proliferation and growth factors, and, consequently, to a rise in the osseointegration process. This review provides a comprehensive update on the numerous biomimetic coatings used to improve the surface characteristics of dental implants and their applications in two main categories: coating to improve osseointegration, including the hydroxyapatite layer and nanocomposites, growth factors (BMPs, PDGF, FGF), and extracellular matrix (collagen, elastin, fibronectin, chondroitin sulfate, hyaluronan, and other proteoglycans), and coatings for anti-bacterial performance, covering drug-coated dental implants (antibiotic, statin, and bisphosphonate), antimicrobial peptide coating (GL13K and human beta defensins), polysaccharide antibacterial coatings (natural chitosan and its coupling agents) and metal elements (silver, zinc, and copper).
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Affiliation(s)
| | - Mohammed Khalid Mahmood
- Faculty of Dentistry, Aix-Marseille University, CNRS, EFS, ADES, 13284 Marseille, France;
- College of Dentistry, The American University of Iraq, Sulaimani 46001, Kurdistan, Iraq
| | | | - Delphine Tardivo
- Faculty of Dentistry, Aix-Marseille University, CNRS, EFS, ADES, 13284 Marseille, France;
| | - Arthur Falguiere
- Oral Surgery Department, Timone Hospital, Aix-Marseille University, APHM, 13284 Marseille, France
| | - Romain Lan
- Oral Surgery Department, Timone Hospital, Aix-Marseille University, APHM, CNRS, EFS, ADES, 13284 Marseille, France;
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6
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Asbai-Ghoudan R, Nasello G, Pérez MÁ, Verbruggen SW, Ruiz de Galarreta S, Rodriguez-Florez N. In silico assessment of the bone regeneration potential of complex porous scaffolds. Comput Biol Med 2023; 165:107381. [PMID: 37611419 DOI: 10.1016/j.compbiomed.2023.107381] [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: 04/28/2023] [Revised: 07/21/2023] [Accepted: 08/14/2023] [Indexed: 08/25/2023]
Abstract
Mechanical environment plays a crucial role in regulating bone regeneration in bone defects. Assessing the mechanobiological behavior of patient-specific orthopedic scaffolds in-silico could help guide optimal scaffold designs, as well as intra- and post-operative strategies to enhance bone regeneration and improve implant longevity. Additively manufactured porous scaffolds, and specifically triply periodic minimal surfaces (TPMS), have shown promising structural properties to act as bone substitutes, yet their ability to induce mechanobiologially-driven bone regeneration has not been elucidated. The aim of this study is to i) explore the bone regeneration potential of TPMS scaffolds made of different stiffness biocompatible materials, to ii) analyze the influence of pre-seeding the scaffolds and increasing the post-operative resting period, and to iii) assess the influence of patient-specific parameters, such as age and mechanosensitivity, on outcomes. To perform this study, an in silico model of a goat tibia is used. The bone ingrowth within the scaffold pores was simulated with a mechano-driven model of bone regeneration. Results showed that the scaffold's architectural properties affect cellular diffusion and strain distribution, resulting in variations in the regenerated bone volume and distribution. The softer material improved the bone ingrowth. An initial resting period improved the bone ingrowth but not enough to reach the scaffold's core. However, this was achieved with the implantation of a pre-seeded scaffold. Physiological parameters like age and health of the patient also influence the bone regeneration outcome, though to a lesser extent than the scaffold design. This analysis demonstrates the importance of the scaffold's geometry and its material, and highlights the potential of using mechanobiological patient-specific models in the design process for bone substitutes.
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Affiliation(s)
- Reduan Asbai-Ghoudan
- Department of Mechanical Engineering and Materials, Universidad de Navarra, TECNUN Escuela de Ingenieros, Paseo Manuel de Lardizabal, 13, 20018, San Sebastian, Spain.
| | - Gabriele Nasello
- Prometheus Division of Skeletal Tissue Engineering, KU Leuven, O&N1, Herestraat 49, PB 813, 3000, Leuven, Belgium
| | - María Ángeles Pérez
- Multiscale in Mechanical and Biological Engineering, Instituto de Investigación en Ingeniería de Aragón (I3A), Instituto de Investigación Sanitaria Aragón (IIS Aragón), University of Zaragoza, 50018, Zaragoza, Spain
| | - Stefaan W Verbruggen
- Centre for Bioengineering, School of Engineering and Materials Science, Queen Mary University of London, London, E1 4NS, UK; Department of Mechanical Engineering and INSIGNEO Institute for in Silico Medicine, University of Sheffield, Sheffield, S1 3JD, UK
| | - Sergio Ruiz de Galarreta
- Department of Mechanical Engineering and Materials, Universidad de Navarra, TECNUN Escuela de Ingenieros, Paseo Manuel de Lardizabal, 13, 20018, San Sebastian, Spain
| | - Naiara Rodriguez-Florez
- Department of Mechanical Engineering and Materials, Universidad de Navarra, TECNUN Escuela de Ingenieros, Paseo Manuel de Lardizabal, 13, 20018, San Sebastian, Spain; IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009, Bilbao, Spain
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7
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Żak M, Rusak A, Kuropka P, Szymonowicz M, Pezowicz C. Mechanical properties and osteointegration of the mesh structure of a lumbar fusion cage made by 3D printing. J Mech Behav Biomed Mater 2023; 141:105762. [PMID: 36931002 DOI: 10.1016/j.jmbbm.2023.105762] [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: 08/22/2022] [Revised: 01/17/2023] [Accepted: 03/05/2023] [Indexed: 03/08/2023]
Abstract
The currently popular 3D printing makes it possible to produce spatial scaffolds, the main purpose of which is to obtain implants that have favourable mechanical properties to promote cell adhesion. This study aims to prove the influence of changes in selected geometrical parameters of scaffolds, used in intervertebral cages, on the mechanical properties obtained and thus on the osteointegration of the studied constructs with osteoblasts and fibroblasts. The stiffness values and maximum failure force of four modifications to geometric dimensions of the meshes were determined from the intendation test. Adhesion assays were conducted (including gentle pendulum motion) for Balb/3T3 fibroblasts and NHOst osteoblasts. The study revealed that an important geometrical parameter affecting the strength of the mesh is the height (h) of the connection point between arms of successive mesh cells. There was no significant effect of the mesh geometry on the abundance and survival of Balb/3T3 and NHOst cells. At the same time, fibroblasts were more likely to form colonies in the area where there is fusion of mesh cells, as opposed to osteoblasts that were more numerous at vertices of the mesh.
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Affiliation(s)
- Małgorzata Żak
- Department of Mechanics, Materials and Biomedical Engineering, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland.
| | - Agnieszka Rusak
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Faculty of Medicine, Wroclaw Medical University, Wrocław, Poland
| | - Piotr Kuropka
- Division of Histology and Embryology, Department of Biostructure and Animal Physiology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland
| | - Maria Szymonowicz
- Pre-Clinical Research Centre, Wroclaw Medical University, Wrocław, Poland
| | - Celina Pezowicz
- Department of Mechanics, Materials and Biomedical Engineering, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Wrocław, Poland
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Teixeira GTL, do Nascimento JPL, Gelamo RV, Moreto JA, Slade NBL. Strategies for Functionalization of Metallic Surfaces with Bioactive Peptides: a Mini Review. Int J Pept Res Ther 2023. [DOI: 10.1007/s10989-023-10497-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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9
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Ouldyerou A, Mehboob H, Merdji A, Aminallah L, Mehboob A, Mukdadi OM. Biomechanical analysis of printable functionally graded material (FGM) dental implants for different bone densities. Comput Biol Med 2022; 150:106111. [PMID: 36195043 DOI: 10.1016/j.compbiomed.2022.106111] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/18/2022] [Accepted: 09/17/2022] [Indexed: 11/24/2022]
Abstract
The long-term success of a dental implant is related to the material and design of the implant, and bone density. Conventional implants cause stress-shielding due to a mismatch between the implant and bone stiffness. Functionally graded porous materials and designs are a great choice for the design of implants to control the local stiffness at a certain location to meet the biomechanical requirements. The purpose of this study is to analyze five designs of axial and radial functionally graded materials (FGM) implants besides the conventional implant and conical and cylindrical shapes that were simulated with five different bone densities. The results showed that strain in bone increased with a decrease in cancellous bone density. The shape of the implant did not play an important role in strain/stress distribution. Conventional implants showed optimal strain (1000-2240 με) in low-density (0.7-0.8 g/cm3) bone, however, FGM implants produced optimal strain (990-1280 με) in the high-density bone (0.9-1 g/cm3) as compared to conventional implants. The proposed designs of FGM implants have the potential to address the complications of conventional implants in high-density bone.
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Affiliation(s)
- Abdelhak Ouldyerou
- Department of Mechanical Engineering, Faculty of Science and Technology, University of Mascara, Mascara, Algeria.
| | - Hassan Mehboob
- Department of Engineering Management, College of Engineering, Prince Sultan University, Riyadh, 11586, Saudi Arabia.
| | - Ali Merdji
- Department of Mechanical Engineering, Faculty of Science and Technology, University of Mascara, Mascara, Algeria; Laboratory of Mechanics Physics of Materials (LMPM), Faculty of Technology, Djillali Liabes University, Sidi Bel-Abbes, 22000, Algeria.
| | - Laid Aminallah
- Department of Mechanical Engineering, Faculty of Science and Technology, University of Mascara, Mascara, Algeria.
| | - Ali Mehboob
- Department of Textile Engineering, School of Engineering and Technology, National Textile University, Faisalabad, Pakistan.
| | - Osama M Mukdadi
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV, 26506, USA.
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10
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Abstract
The application of porous materials is increasingly being used in orthopaedic surgery due to its good results. Bone growth within the pores results in excellent mechanical fixation with the bone, as well as good bone regeneration. The pores, in addition to being colonised by bone, produce a decrease in the modulus of elasticity that favours the transfer of loads to the bone. This research shows the results of an experimental study where we have created critical osteoperiosteal defects of 10 mm on rabbit’s radius diaphysis. In one group of 10 rabbits (experimental group) we have implanted a bioactive porous titanium cylinder, and in another group we have allowed spontaneous regeneration (control group). Mechanical tests were performed to assess the material. Image diagnostic techniques (X-ray, scanner and 3D scan: there are no references on the literature with the use of CT-scan in bone defects) and histological and histomorphometric studies post-op and after 3, 6 and 12 months after the surgery were performed. All the control cases went through a pseudoarthrosis. In 9 of the 10 cases of the experimental group complete regeneration was observed, with a normal cortical-marrow structure established at 6 months, similar to normal bone. Titanium trabecular reached a bone percentage of bone inside the implant of 49.3% on its surface 3 months post-op, 75.6% at 6 months and 81.3% at 12 months. This porous titanium biomaterial has appropriate characteristics to allow bone ingrowth, and it can be proposed as a bone graft substitute to regenerate bone defects, as a scaffold, or as a coating to achieve implant osteointegration.
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