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De Stefano M, Singh K, Raina A, Mohan S, Ul Haq MI, Ruggiero A. Tribocorrosion of 3D printed dental implants: An overview. J Taibah Univ Med Sci 2024; 19:644-663. [PMID: 38807965 PMCID: PMC11131088 DOI: 10.1016/j.jtumed.2024.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/30/2024] [Accepted: 05/03/2024] [Indexed: 05/30/2024] Open
Abstract
With the advancements in dental science and the growing need for improved dental health, it has become imperative to develop new implant materials which possess better geometrical, mechanical, and physical properties. The oral environment is a corrosive environment and the relative motion between the teeth also makes the environment more hostile. Therefore, the combined corrosion and tribology commonly known as tribocorrosion of implants needs to be studied. The complex shapes of the dental implants and the high-performance requirements of these implants make manufacturing difficult by conventional manufacturing processes. With the advent of additive manufacturing or 3D-printing, the development of implants has become easy. However, the various requirements such as surface roughness, mechanical strength, and corrosion resistance further make the manufacturing of implants difficult. The current paper reviews the various studies related to3D-printed implants. Also, the paper tries to highlight the role of 3D-Printing can play in the area of dental implants. Further studies both experimental and numerical are needed to devise optimized conditions for 3D-printing implants to develop implants with improved mechanical, corrosion, and biological properties.
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Affiliation(s)
- Marco De Stefano
- Department of Industrial Engineering, University of Salerno, Fisciano, Italy
| | - Khushneet Singh
- School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, India
| | - Ankush Raina
- School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, India
| | - Sanjay Mohan
- School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, India
| | - Mir Irfan Ul Haq
- School of Mechanical Engineering, Shri Mata Vaishno Devi University, Katra, Jammu and Kashmir, India
| | - Alessandro Ruggiero
- Department of Industrial Engineering, University of Salerno, Fisciano, Italy
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Elenskaya N, Tashkinov M, Vindokurov I, Pirogova Y, Silberschmidt VV. Understanding of trabecular-cortical transition zone: Numerical and experimental assessment of multi-morphology scaffolds. J Mech Behav Biomed Mater 2023; 147:106146. [PMID: 37774442 DOI: 10.1016/j.jmbbm.2023.106146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/01/2023]
Abstract
Applications of additive manufacturing (AM) in tissue engineering develop rapidly. AM offers layer-by-layer creation of complex objects, developed to restore functionality of, or replace, damaged tissues. Porous 3D-printed functional gradient structures are of particular interest: their special architecture makes it possible to simulate the heterogeneity of the replaced tissue and, by continuously changing the mechanical properties, to avoid the concentration of stresses that can be caused by abrupt geometric changes. Such structures also allow combinations of different types of unit cells and a smooth transition between them, making design of personalised scaffolds with optimal parameters for the replacement of damaged host tissue at the interface between tissues possible. This paper presents the results of development of scaffold structures with gradients of porosity and multi-morphology using unit cells based on triply periodic minimal surfaces (TPMS). The mechanical behaviour of additively manufactured scaffold prototypes made of polylactide acid (PLA) was studied under compressive loading. Strain fields on their surface were captured using the Vic-3d Micro-DIC digital image correlation system and compared with those obtained with detailed numerical simulations, employing elastic-plastic properties of PLA, obtained in experiments. The effect of gradient parameters and unit-cell morphology on the stress distribution in scaffolds was analysed. A smooth gradient transition between cells with different morphologies was found to reduce the probability of structural failure under intense compressive loading. A good agreement between numerical results and experimental data was achieved, which justifies application of the developed approach to design of personalised bone scaffolds.
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Affiliation(s)
- Nataliya Elenskaya
- Perm National Research Polytechnic University, Komsomolsky Ave., 29, Perm, Russia
| | - Mikhail Tashkinov
- Perm National Research Polytechnic University, Komsomolsky Ave., 29, Perm, Russia.
| | - Ilia Vindokurov
- Perm National Research Polytechnic University, Komsomolsky Ave., 29, Perm, Russia
| | - Yulia Pirogova
- Perm National Research Polytechnic University, Komsomolsky Ave., 29, Perm, Russia
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Liu A, Lu Y, Dai J, Wen P, Xia D, Zheng Y. Mechanical properties, in vitro biodegradable behavior, biocompatibility and osteogenic ability of additively manufactured Zn-0.8Li-0.1Mg alloy scaffolds. BIOMATERIALS ADVANCES 2023; 153:213571. [PMID: 37562158 DOI: 10.1016/j.bioadv.2023.213571] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/29/2023] [Accepted: 07/25/2023] [Indexed: 08/12/2023]
Abstract
Alloying and structural design provide flexibility to modulate performance of biodegradable porous implants manufactured by laser powder bed fusion (L-PBF). Herein, bulk Zn-0.8Li-0.1Mg was first fabricated to indicate the influence of the ternary alloy system on strengthening effect. Porous scaffolds with different porosities, including 60 % (P60), 70 % (P70) and 80 % (P80), were designed and fabricated to study the influence of porosity on mechanical properties, in vitro degradation behavior, biocompatibility and osteogenic ability. Pure Zn (Zn-P70) scaffolds with a porosity of 70 % were utilized for the comparison. The results showed Zn-0.8Li-0.1Mg bulks had an ultimate tensile strength of 460.78 ± 5.79 MPa, which was more than 3 times that of pure Zn ones and was the highest value ever reported for Zn alloys fabricated by L-PBF. The compressive strength (CS) and elastic modulus (E) of scaffolds decreased with increasing porosities. The CS of P70 scaffolds was 24.59 MPa, more than 2 times that of Zn-P70. The weight loss of scaffolds during in vitro immersion increased with increasing porosities. Compared with Zn-P70, a lower weight loss, better biocompatibility and improved osteogenic ability were observed for P70 scaffolds. P70 scaffolds also exhibited the best biocompatibility and osteogenic ability among all the used porosities. Influence mechanism of alloying elements and structural porosities on mechanical behaviors, in vitro biodegradation behavior, biocompatibility and osteogenic ability of scaffolds were discussed using finite element analysis and the characterization of degradation products. The results indicated that the proper design of alloying and porosity made Zn-0.8Li-0.1Mg scaffolds promising for biodegradable applications.
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Affiliation(s)
- Aobo Liu
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Yupu Lu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Jiabao Dai
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Peng Wen
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China; Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.
| | - Dandan Xia
- Department of Dental Materials, Peking University School and Hospital of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China.
| | - Yufeng Zheng
- School of Materials Science and Engineering, Peking University, Beijing 100871, China..
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Calazans Neto JV, Valente MLDC, Reis ACD. Effect of pores on cell adhesion to additively manufactured titanium implants: A systematic review. J Prosthet Dent 2023:S0022-3913(23)00340-2. [PMID: 37353409 DOI: 10.1016/j.prosdent.2023.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 05/17/2023] [Accepted: 05/17/2023] [Indexed: 06/25/2023]
Abstract
STATEMENT OF PROBLEM Titanium dental implants produced by additive manufacturing have pores that, depending on their size and quantity, may improve osteogenic cell adhesion without impairing mechanical properties. A systematic review of in vitro studies on this topic is lacking. PURPOSE The purpose of this systematic review was to answer the question "What is the influence of pores on osteogenic cell adhesion on titanium surfaces produced by additive manufacturing?". MATERIAL AND METHODS The study was designed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) 2020 standards and registered in the Open Science Framework (OSF) (osf.io/baw59). A manual search of published articles without language or time restrictions was conducted in November 2022 in the electronic databases PubMed, Scopus, ScienceDirect, Embase, and in the nonpeer-reviewed literature via Google Scholar. RESULTS A total of 1338 initial results were found, and after removing duplicates and applying eligibility criteria, 13 articles were included in this review that, according to the Joanna Briggs Institute (JBI) tool, presented a low risk of bias. Pores with larger diameters provide greater a surface area that favors cell filopodia adhesion and has interconnection that optimizes the transport of nutrients and oxygen and bone cell activity. CONCLUSIONS The presence of pores on the surface of titanium produced by additive manufacturing increases the adhesion, migration, proliferation, and viability of osteogenic cells.
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Affiliation(s)
- João Vicente Calazans Neto
- Master's student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Brazil
| | - Mariana Lima da Costa Valente
- Post-Doctoral student, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Brazil
| | - Andréa Cândido Dos Reis
- Professor, Department of Dental Materials and Prosthodontics, Ribeirão Preto Dental School, University of São Paulo (USP), Brazil.
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Ho CC, Chen YW, Wang K, Lin YH, Chen TC, Shie MY. Effect of mussel-inspired polydopamine on the reinforced properties of 3D printed β-tricalcium phosphate/polycaprolactone scaffolds for bone regeneration. J Mater Chem B 2022; 11:72-82. [PMID: 36373587 DOI: 10.1039/d2tb01995g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Bioceramic/polymer scaffolds have been considered as potential grafts used for facilitating bone healing. Unfortunately, the poor interfacial interaction between polymer matrices and bioceramic fillers limited their use in practical medicine. Thus, a facile strategy for reinforcing the three-dimensional printed β-tricalcium phosphate/polycaprolactone scaffolds through employing polydopamine modified-ceramics as fillers. The effects of the dopamine precursor on the compressive strength, degradability, cell proliferation, osteogenic differentiation, and in vivo osteogenicity were measured. The results indicated that the concentration of dopamine could remarkably affect the thickness and density of the polydopamine layer on fillers, further varying the compressive strength (1.23-fold to 1.64-fold), degradability, and osteogenicity of the scaffolds. More importantly, the presence of polydopamine in the three-dimensional printed composite scaffolds not only facilitated the proliferation, alkaline phosphatase activity and mineralization of mesenchymal stem cells, but also stimulated the formation of neo-bone tissue in femur defects. Taking together, the proposed scaffolds might serve as a candidate for bone regeneration.
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Affiliation(s)
- Chia-Che Ho
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan. .,High Performance Materials Institute for x-Dimensional Printing, Asia University, Taichung City, Taiwan
| | - Yi-Wen Chen
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan.,x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung, Taiwan
| | - Kan Wang
- Georgia Tech Manufacturing Institute, Georgia Institute of Technology, Atlanta, GA, USA
| | - Yen-Hong Lin
- x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung, Taiwan
| | - Ta-Cheng Chen
- High Performance Materials Institute for x-Dimensional Printing, Asia University, Taichung City, Taiwan.,Department of Information Management, National Formosa University, Yunlin, Taiwan
| | - Ming-You Shie
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan. .,x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung, Taiwan.,School of Dentistry, China Medical University, Taichung, Taiwan
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Zhang Q, Guan Y. Review: Application of metal additive manufacturing in oral dentistry. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2022. [DOI: 10.1016/j.cobme.2022.100441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Wu HY, Lin YH, Lee AKX, Kuo TY, Tsai CH, Shie MY. Combined Effects of Polydopamine-Assisted Copper Immobilization on 3D-Printed Porous Ti6Al4V Scaffold for Angiogenic and Osteogenic Bone Regeneration. Cells 2022; 11:cells11182824. [PMID: 36139399 PMCID: PMC9497129 DOI: 10.3390/cells11182824] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 12/13/2022] Open
Abstract
Numerous studies have demonstrated that biological compounds and trace elements such as dopamine (DA) and copper ions (Cu) could be modified onto the surfaces of scaffolds using a one-step immersion process which is simple, inexpensive and, most importantly, non-cytotoxic. The development and emergence of 3D printing technologies such as selective laser melting (SLM) have also made it possible for us to fabricate bone scaffolds with precise structural designs using metallic compounds. In this study, we fabricated porous titanium scaffolds (Ti) using SLM and modified the surface of Ti with polydopamine (PDA) and Cu. There are currently no other reported studies with such a combination for osteogenic and angiogenic-related applications. Results showed that such modifications did not affect general appearances and microstructural characteristics of the porous Ti scaffolds. This one-step immersion modification allowed us to modify the surfaces of Ti with different concentrations of Cu ions, thus allowing us to fabricate individualized scaffolds for different clinical scenarios. The modification improved the hydrophilicity and surface roughness of the scaffolds, which in turn led to promote cell behaviors of Wharton’s jelly mesenchymal stem cells. Ti itself has high mechanical strength, therefore making it suitable for surgical handling and clinical applications. Furthermore, the scaffolds were able to release ions in a sustained manner which led to an upregulation of osteogenic-related proteins (bone alkaline phosphatase, bone sialoprotein and osteocalcin) and angiogenic-related proteins (vascular endothelial growth factor and angiopoietin-1). By combining additive manufacturing, Ti6Al4V scaffolds, surface modification and Cu ions, the novel hybrid 3D-printed porous scaffold could be fabricated with ease and specifically benefited future bone regeneration in the clinic.
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Affiliation(s)
- Hsi-Yao Wu
- School of Dentistry, China Medical University, Taichung 406040, Taiwan
| | - Yen-Hong Lin
- X-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung 404332, Taiwan
| | - Alvin Kai-Xing Lee
- Department of Education, China Medical University Hospital, Taichung 404332, Taiwan
| | - Ting-You Kuo
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung City 406040, Taiwan
| | - Chun-Hao Tsai
- Department of Sports Medicine, College of Health Care, China Medical University, Taichung 406040, Taiwan
- Department of Orthopedics, China Medical University Hospital, Taichung 40447, Taiwan
| | - Ming-You Shie
- School of Dentistry, China Medical University, Taichung 406040, Taiwan
- X-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung 404332, Taiwan
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung 41354, Taiwan
- Correspondence: ; Tel.: +886-4-22967979 (ext. 3700)
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