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Zara S, Fioravanti G, Ciuffreda A, Annicchiarico C, Quaresima R, Mastrangelo F. Evaluation of Human Gingival Fibroblasts (HGFs) Behavior on Innovative Laser Colored Titanium Surfaces. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4530. [PMID: 37444844 DOI: 10.3390/ma16134530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/16/2023] [Accepted: 06/18/2023] [Indexed: 07/15/2023]
Abstract
The use of ytterbium laser to obtain colored titanium surfaces is a suitable strategy to improve the aesthetic soft tissue results and reduce implant failures in oral rehabilitation. To investigate the relationship between novel laser-colored surfaces and peri-implant soft tissues, Human Gingival Fibroblasts (HGFs) were cultured onto 12 colored titanium grade 1 light fuchsia, dark fuchsia, light gold, and dark gold disks and their viability (MTT Assay), cytotoxicity (lactate dehydrogenase release), and collagen I secretion were compared to the machined surface used as control. Optical and electronic microscopies showed a HGF growth directly correlated to the roughness and wettability of the colored surfaces. A higher viability percentage on dark fuchsia (125%) light gold (122%), and dark gold (119%) samples with respect to the machined surface (100%) was recorded. All specimens showed a statistically significant reduction of LDH release compared to the machined surface. Additionally, a higher collagen type I secretion, responsible for an improved adhesion process, in light fuchsia (3.95 μg/mL) and dark gold (3.61 μg/mL) compared to the machined surface (3.59 μg) was recorded. The in vitro results confirmed the innovative physical titanium improvements due to laser treatment and represent interesting perspectives of innovation in order to ameliorate aesthetic dental implant performance and to obtain more predictable osteo and perio-osteointegration long term implant prognosis.
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Affiliation(s)
- Susi Zara
- Department of Pharmacy, University G. D'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Giulia Fioravanti
- Department of Physical and Chemical Sciences, University of L'Aquila, 67100 L'Aquila, Italy
| | - Angelo Ciuffreda
- Clinical and Experimental Medicine Department, University of Foggia, 71122 Foggia, Italy
| | | | - Raimondo Quaresima
- Department of Civil, Construction-Architectural and Environmental Engineering, University of L'Aquila, 67100 L'Aquila, Italy
| | - Filiberto Mastrangelo
- Clinical and Experimental Medicine Department, University of Foggia, 71122 Foggia, Italy
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2
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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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3
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Fadzil AFBA, Pramanik A, Basak A, Prakash C, Shankar S. Role of surface quality on biocompatibility of implants - A review. ANNALS OF 3D PRINTED MEDICINE 2022. [DOI: 10.1016/j.stlm.2022.100082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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4
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Visschers FLL, Broer DJ, Liu D. Programmed topographical features generated on command in confined electroactive films. SOFT MATTER 2021; 17:7247-7251. [PMID: 34227636 DOI: 10.1039/d1sm00840d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This work describes a method to create dynamic pre-programmed surface textures by an alternating electric field on coatings that consist of a silicon oxide reinforced viscoelastic siloxane network. The finite element method is developed to predict the complex deformation figures and time-resolved experimental topographical surface analysis is used to confirm them.
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Affiliation(s)
- Fabian L L Visschers
- Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, De Rondom, Eindhoven 5612 AP, The Netherlands. and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, De Rondom 70, Eindhoven 5612 AP, The Netherlands
| | - Dirk J Broer
- Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, De Rondom, Eindhoven 5612 AP, The Netherlands. and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, De Rondom 70, Eindhoven 5612 AP, The Netherlands and SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), South China Normal University, Guangzhou Higher Education Mega Center, P. R. China
| | - Danqing Liu
- Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, De Rondom, Eindhoven 5612 AP, The Netherlands. and Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, De Rondom 70, Eindhoven 5612 AP, The Netherlands and SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), South China Normal University, Guangzhou Higher Education Mega Center, P. R. China
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5
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Padilha Fontoura C, Ló Bertele P, Machado Rodrigues M, Elisa Dotta Maddalozzo A, Frassini R, Silvestrin Celi Garcia C, Tomaz Martins S, Crespo JDS, Figueroa CA, Roesch-Ely M, Aguzzoli C. Comparative Study of Physicochemical Properties and Biocompatibility (L929 and MG63 Cells) of TiN Coatings Obtained by Plasma Nitriding and Thin Film Deposition. ACS Biomater Sci Eng 2021; 7:3683-3695. [PMID: 34291900 DOI: 10.1021/acsbiomaterials.1c00393] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ti6Al4V is one of the most lightweight, mechanically resistant, and appropriate for biologically induced corrosion alloys. However, surface properties often must be tuned for fitting into biomedical applications, and therefore, surface modification is of paramount importance to carry on its use. This work compares the interaction between two different cell lines (L929 fibroblasts and osteoblast-like MG63) and medical grade Ti6Al4V after surface modification by plasma nitriding or thin film deposition. We studied the adhesion of these two cell lines, exploring which trends are consistent for cell behavior, correlating with osseointegration and in vivo conditions. Modified surfaces were analyzed through several physicochemical characterization techniques. Plasma nitriding led to a more pronounced increase in surface roughness, a thicker aluminum-free layer, made up of diverse titanium nitride phases, whereas thin film deposition resulted in a single-phase pure titanium nitride layer that leveled the ridged topography. The selective adhesion of osteoblast-like cells over fibroblasts was observed in nitrided samples but not in thin film deposited films, indicating that the competitive cellular behavior is more pronounced in plasma nitrided surfaces. The obtained coatings presented an appropriate performance for its use in biomedical-aimed applications, including the possibility of a higher success rate in osseointegration of implants.
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Affiliation(s)
- Cristian Padilha Fontoura
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
| | - Patrícia Ló Bertele
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
| | - Melissa Machado Rodrigues
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
| | - Ana Elisa Dotta Maddalozzo
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Rafaele Frassini
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Charlene Silvestrin Celi Garcia
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Sandro Tomaz Martins
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Janaina da Silva Crespo
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Carlos A Figueroa
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
| | - Mariana Roesch-Ely
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Cesar Aguzzoli
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
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Danyuo Y, Obayemi JD, Salifu AA, Oyewole OK, Azeko ST, Ani CJ, Dozie-Nwachukwu S, Yirijor J, Abade-Abugre M, Odusanya OS, McBagonluri F, Soboyejo WO. Cell-surface interactions on gold-coated polydimethylsiloxane nanocomposite structures: Localized laser heating on cell viability. J Biomed Mater Res A 2021; 109:2611-2624. [PMID: 34180577 DOI: 10.1002/jbm.a.37254] [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] [Received: 04/06/2020] [Revised: 06/11/2021] [Accepted: 06/18/2021] [Indexed: 12/26/2022]
Abstract
This article presents the results of cell-surface interactions on polydimethylsiloxane (PDMS)-based substrates coated with nanoscale gold (Au) thin films. The surfaces of PDMS and PDMS-magnetite (MNP)-based substrates were treated with UV-ozone, prior to thermal vapor deposition (sputter-coated) of thin films of titanium (Ti) onto the substrates to improve the adhesion of Au coatings. The thin layer of Ti was thermally evaporated to improve interfacial adhesion, which was enhanced by a 40-nm thick film microwrinkled/buckled wavy layer of Au, that was coated to enhance cell-surface interactions and protein absorption. Cell-surface interactions were studied on the hybrid surfaces using a combination of optical and fluorescence microscopy. Consequently, cell proliferation and surface cytotoxicity (of the sputter-coated PDMS surfaces) were elucidated by characterizing the metabolic activity in the presence of breast cancer and normal breast cells. The photothermal conversion efficiency associated with laser-materials interactions with the PDMS/PDMS-magnetite-based composites was shown to have an optimum efficiency of ~31.8%. The implications of the results are discussed for potential applications of PDMS nanocomposites in implantable biomedical devices.
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Affiliation(s)
- Yiporo Danyuo
- Department of Mechanical Engineering, Ashesi University, 1 University Avenue, Berekuso, Ghana.,Department of Materials Science and Engineering, African University of Science and Technology, FCT, Abuja, Nigeria
| | - John David Obayemi
- Department of Mechanical Engineering, Higgins Labs, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
| | - Ali Azeko Salifu
- Department of Mechanical Engineering, Higgins Labs, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
| | - Oluwaseun Kehinde Oyewole
- Department of Mechanical Engineering, Higgins Labs, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
| | - Salifu Tahiru Azeko
- Department of Mechanical Engineering, Tamale Technical University, Tamale, Northern Region, Ghana
| | - Chukwuemeka Joseph Ani
- Department of Theoretical and Applied Physics, African University of Science and Technology (AUST), FCT, Abuja, Nigeria.,Department of Electrical and Electronics Engineering, Nile University of Nigeria, FCT, Abuja, Nigeria
| | - Stella Dozie-Nwachukwu
- Department of Materials Science and Engineering, African University of Science and Technology, FCT, Abuja, Nigeria.,Biotechnology Advance Research Centre, Sheda Science and Technology Complex (SHESTCO), FCT, Abuja, Nigeria
| | - John Yirijor
- Department of Mechanical Engineering, Academic City University College, Accra, Ghana
| | - Miriam Abade-Abugre
- Department of Mechanical Engineering, Ashesi University, 1 University Avenue, Berekuso, Ghana
| | - Olushola Segun Odusanya
- Department of Materials Science and Engineering, African University of Science and Technology, FCT, Abuja, Nigeria.,Biotechnology Advance Research Centre, Sheda Science and Technology Complex (SHESTCO), FCT, Abuja, Nigeria
| | - Fred McBagonluri
- Department of Mechanical Engineering, Academic City University College, Accra, Ghana
| | - Winston Oluwole Soboyejo
- Department of Mechanical Engineering, Higgins Labs, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
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7
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Sandoval-Robles JA, Rodríguez CA, García-López E. Laser Surface Texturing and Electropolishing of CoCr and Ti6Al4V-ELI Alloys for Biomedical Applications. MATERIALS 2020; 13:ma13225203. [PMID: 33213110 PMCID: PMC7698641 DOI: 10.3390/ma13225203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 01/09/2023]
Abstract
The interplay between a prosthetic and tissue represents an important factor for the fixation of orthopedic implants. Laser texturing tests and electropolishing were performed on two materials used in the fabrication of medical devices, i.e., CoCr and Ti6Al4V-ELI alloys. The material surface was textured with a diode-pumped solid state (DPSS) laser and its effect on the surface quality and material modification, under different combinations of laser power and marking speed, were investigated. Our results indicate that an increment of energy per unit length causes an incremental trend in surface roughness parameters. Additionally, phase transformation on the surface of both alloys was achieved. Chemical analysis by energy dispersive X-ray spectrometer (EDX) shows the formation of (Co(Cr,Mo)) phase and the M23C6 precipitate on the CoCr surface; while quantitative analysis of the X-ray diffractometer (XRD) results demonstrates the oxidation of the Ti alloy with the formation of Ti2O and Ti6O from the reduction of the α-Ti phase. The behaviors were both related with an increase of the energy per unit length. Control of the final surface roughness was achieved by an electropolishing post-treatment, minimizing the as-treated values. After polishing, a reduction of surface roughness parameters was obtained in a range between 3% and 44%, while no changes in chemical composition or present phases were observed.
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Affiliation(s)
- Jesús A Sandoval-Robles
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, Nuevo León 64849, Mexico
- Laboratorio Nacional de Manufactura Aditiva y Digital (MADiT)Apodaca, Nuevo León 66629, Mexico
| | - Ciro A Rodríguez
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, Nuevo León 64849, Mexico
- Laboratorio Nacional de Manufactura Aditiva y Digital (MADiT)Apodaca, Nuevo León 66629, Mexico
| | - Erika García-López
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, Nuevo León 64849, Mexico
- Laboratorio Nacional de Manufactura Aditiva y Digital (MADiT)Apodaca, Nuevo León 66629, Mexico
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8
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Hung HS, Yu AYH, Hsieh SC, Kung ML, Huang HY, Fu RH, Yeh CA, Hsu SH. Enhanced Biocompatibility and Differentiation Capacity of Mesenchymal Stem Cells on Poly(dimethylsiloxane) by Topographically Patterned Dopamine. ACS APPLIED MATERIALS & INTERFACES 2020; 12:44393-44406. [PMID: 32697572 DOI: 10.1021/acsami.0c05747] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Controlling the behavior of mesenchymal stem cells (MSCs) through topographic patterns is an effective approach for stem cell studies. We, herein, reported a facile method to create a dopamine (DA) pattern on poly(dimethylsiloxane) (PDMS). The topography of micropatterned DA was produced on PDMS after plasma treatment. The grid-topographic-patterned surface of PDMS-DA (PDMS-DA-P) was measured for adhesion force and Young's modulus by atomic force microscopy. The surface of PDMS-DA-P demonstrated less stiff and more elastic characteristics compared to either nonpatterned PDMS-DA or PDMS. The PDMS-DA-P evidently enhanced the differentiation of MSCs into various tissue cells, including nerve, vessel, bone, and fat. We further designed comprehensive experiments to investigate adhesion, proliferation, and differentiation of MSCs in response to PDMS-DA-P and showed that the DA-patterned surface had good biocompatibility and did not activate macrophages or platelets in vitro and had low foreign body reaction in vivo. Besides, it protected MSCs from apoptosis as well as excessive reactive oxygen species (ROS) generation. Particularly, the patterned surface enhanced the differentiation capacity of MSCs toward neural and endothelial cells. The stromal cell-derived factor-1α/CXantiCR4 pathway may be involved in mediating the self-recruitment and promoting the differentiation of MSCs. These findings support the potential application of PDMS-DA-P in either cell treatment or tissue repair.
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Affiliation(s)
- Huey-Shan Hung
- Graduate Institute of Biomedical Science, China Medical University, Taichung 40402, Taiwan, R.O.C
- Translational Medicine Research, China Medical University Hospital, Taichung 40402, Taiwan, R.O.C
| | - Alex Yang-Hao Yu
- Ministry of Health & Welfare, Changhua Hospital, Changhua 51341, Taiwan, R.O.C
| | - Shu-Chen Hsieh
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, R.O.C
| | - Mei-Lang Kung
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung 81362, Taiwan, R.O.C
| | - Hsiu-Yuan Huang
- Department of Cosmeceutics and Graduate Institute of Cosmeceutics, China Medical University, Taichung 40402, Taiwan, R.O.C
| | - Ru-Huei Fu
- Graduate Institute of Biomedical Science, China Medical University, Taichung 40402, Taiwan, R.O.C
- Translational Medicine Research, China Medical University Hospital, Taichung 40402, Taiwan, R.O.C
| | - Chun-An Yeh
- Graduate Institute of Biomedical Science, China Medical University, Taichung 40402, Taiwan, R.O.C
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan, R.O.C
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Wang Q, Zhou P, Liu S, Attarilar S, Ma RLW, Zhong Y, Wang L. Multi-Scale Surface Treatments of Titanium Implants for Rapid Osseointegration: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1244. [PMID: 32604854 PMCID: PMC7353126 DOI: 10.3390/nano10061244] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 05/30/2020] [Accepted: 06/22/2020] [Indexed: 02/06/2023]
Abstract
The propose of this review was to summarize the advances in multi-scale surface technology of titanium implants to accelerate the osseointegration process. The several multi-scaled methods used for improving wettability, roughness, and bioactivity of implant surfaces are reviewed. In addition, macro-scale methods (e.g., 3D printing (3DP) and laser surface texturing (LST)), micro-scale (e.g., grit-blasting, acid-etching, and Sand-blasted, Large-grit, and Acid-etching (SLA)) and nano-scale methods (e.g., plasma-spraying and anodization) are also discussed, and these surfaces are known to have favorable properties in clinical applications. Functionalized coatings with organic and non-organic loadings suggest good prospects for the future of modern biotechnology. Nevertheless, because of high cost and low clinical validation, these partial coatings have not been commercially available so far. A large number of in vitro and in vivo investigations are necessary in order to obtain in-depth exploration about the efficiency of functional implant surfaces. The prospective titanium implants should possess the optimum chemistry, bionic characteristics, and standardized modern topographies to achieve rapid osseointegration.
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Affiliation(s)
- Qingge Wang
- School of Metallurgical Engineering, Xi’an University of Architecture and Technology, No.13 Yanta Road, Xi’an 710055, China;
| | - Peng Zhou
- School of Aeronautical Materials Engineering, Xi’an Aeronautical Polytechnic Institute, Xi’an 710089, China;
| | - Shifeng Liu
- School of Metallurgical Engineering, Xi’an University of Architecture and Technology, No.13 Yanta Road, Xi’an 710055, China;
| | - Shokouh Attarilar
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
| | - Robin Lok-Wang Ma
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong 999077, China; (R.L.-W.M.); (Y.Z.)
| | - Yinsheng Zhong
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong 999077, China; (R.L.-W.M.); (Y.Z.)
| | - Liqiang Wang
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
- National Engineering Research Center for Nanotechnology (NERCN), 28 East JiangChuan Road, Shanghai 200241, China
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10
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Esthetic and Physical Changes of Innovative Titanium Surface Properties Obtained with Laser Technology. MATERIALS 2020; 13:ma13051066. [PMID: 32121085 PMCID: PMC7084452 DOI: 10.3390/ma13051066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/25/2020] [Accepted: 02/25/2020] [Indexed: 01/30/2023]
Abstract
Aim: The purpose of the study was the evaluation of the esthetic and physical changes produced on colored titanium Grade 5 (Ti6Al4V) laser treated surfaces to be used in implant dentistry for esthetic success. Materials and methods: Colored titanium surfaces were obtained with laser treatment. The physical and topographic properties were evaluated by stereo, light, and electron microscopy and profilometric analyses. L*a*b* colorimetric coordinates were measured by spectrometry, and the superficial chemical characteristics were evaluated by energy dispersive X-ray analysis. Results: Within the complete palette of titanium colors, pinks (P1-P2), incarnadine (I), and white (W) obtained by laser were selected. The topography, texture, hues, saturation, roughness, and porosity of the samples were compared with those of machined (M) and sand-blasted and etched (SBAE) control surfaces. P1, P2, and I, similar in hue and roughness (Ra ≅ 0.5 μm), had a microgroove spacing of 56 μm and a decreasing porosity. The W sample with a “checkerboard” texture and a light color (L* 96.31) was similar to the M samples (Ra = 0.32 μm), but different from SBAE (Ra = 1.41 μm, L* 65.47). Discussion: The aspects of hard and soft tissue could result in an esthetic failure of the dental implant by showing the dark color of the fixture or abutment. The two different pinks and incarnadine surfaces showed favorable esthetic and physical features to promote dental implant success even in the maxillary anterior area with gingival recession, asymmetry, and deficiency. Conclusion: Titanium colored laser surfaces represent a valid alternative to those currently traditionally obtained and interesting and potential perspectives in the management of dental implants’ esthetic failure.
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Pilipchuk SP, Fretwurst T, Yu N, Larsson L, Kavanagh NM, Asa’ad F, Cheng KCK, Lahann J, Giannobile WV. Micropatterned Scaffolds with Immobilized Growth Factor Genes Regenerate Bone and Periodontal Ligament-Like Tissues. Adv Healthc Mater 2018; 7:e1800750. [PMID: 30338658 PMCID: PMC6394861 DOI: 10.1002/adhm.201800750] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/04/2018] [Indexed: 12/29/2022]
Abstract
Periodontal disease destroys supporting structures of teeth. However, tissue engineering strategies offer potential to enhance regeneration. Here, the strategies of patterned topography, spatiotemporally controlled growth factor gene delivery, and cell-based therapy to repair bone-periodontal ligament (PDL) interfaces are combined. Micropatterned scaffolds are fabricated for the ligament regions using polycaprolactone (PCL)/polylactic-co-glycolic acid and combined with amorphous PCL scaffolds for the bone region. Scaffolds are modified using chemical vapor deposition, followed by spatially controlled immobilization of vectors encoding either platelet-derived growth factor-BB or bone morphogenetic protein-7, respectively. The scaffolds are seeded with human cells and delivered to large alveolar bone defects in athymic rats. The effects of dual and single gene delivery with and without micropatterning are assessed after 3, 6, and 9 weeks. Gene delivery results in greater bone formation at three weeks. Micropatterning results in regenerated ligamentous tissues similar to native PDL. The combination results in more mature expression of collagen III and periostin, and with elastic moduli of regenerated tissues that are statistically indistinguishable from those of native tissue, while controls are less stiff than native tissues. Thus, controlled scaffold microtopography combined with localized growth factor gene delivery improves the regeneration of periodontal bone-PDL interfaces.
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Affiliation(s)
- Sophia P. Pilipchuk
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan College of Engineering, 1101 Beal Ave, Ann Arbor, MI 48109, USA
| | - Tobias Fretwurst
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, MI 48109, USA
- Department of Oral and Maxillofacial Surgery, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Germany, Hugstetter Straße 55, Freiburg, D-79106, Germany
| | - Ning Yu
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, MI 48109, USA
| | - Lena Larsson
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, MI 48109, USA
- Department of Periodontology, Institute of Odontology, Medicinaregatan 12F, University of Gothenburg, SE-405 30 Gothenburg, Sweden
| | - Nolan M. Kavanagh
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, MI 48109, USA
| | - Farah Asa’ad
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, MI 48109, USA
- Department of Biomedical, Surgical and Dental Sciences, Foundation IRCCS Ca’ Granda Polyclinic, University of Milan, Milan, Italy
| | - Kenneth C. K. Cheng
- Biointerfaces Institute, Department of Materials Science and Engineering, University of Michigan College of Engineering, 2800 Plymouth Rd, Ann Arbor, MI, 48109, USA
| | - Joerg Lahann
- Department of Biomedical Engineering, University of Michigan College of Engineering, 1101 Beal Ave, Ann Arbor, MI 48109, USA
- Biointerfaces Institute, Department of Materials Science and Engineering, University of Michigan College of Engineering, 2800 Plymouth Rd, Ann Arbor, MI, 48109, USA
- Departments of Chemical Engineering, Macromolecular Science and Engineering, University of Michigan College of Engineering, 2800 Plymouth Rd, Ann Arbor, MI, 48109, USA
| | - William V. Giannobile
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, 1011 N. University Ave., Ann Arbor, MI 48109, USA,
- Department of Biomedical Engineering, University of Michigan College of Engineering, 1101 Beal Ave, Ann Arbor, MI 48109, USA
- Biointerfaces Institute, Department of Materials Science and Engineering, University of Michigan College of Engineering, 2800 Plymouth Rd, Ann Arbor, MI, 48109, USA
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12
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Yuan X, Kang Y, Zuo J, Xie Y, Ma L, Ren X, Bian Z, Wei Q, Zhou K, Wang X, Yu Z. Micro/nano hierarchical structured titanium treated by NH4OH/H2O2 for enhancing cell response. PLoS One 2018; 13:e0196366. [PMID: 29723214 PMCID: PMC5933712 DOI: 10.1371/journal.pone.0196366] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Accepted: 04/11/2018] [Indexed: 01/08/2023] Open
Abstract
In this paper, two kinds of titanium surfaces with novel micro/nano hierarchical structures, namely Etched (E) surface and Sandblast and etched (SE) surface, were successfully fabricated by NH4OH and H2O2 mixture. And their cellular responses of MG63 were investigated compared with Sandblast and acid-etching (SLA) surface. Scanning electron microscope (SEM), Surface profiler, X-ray photoelectron spectroscopy (XPS), and Contact angle instrument were employed to assess the surface morphologies, roughness, chemistry and wettability respectively. Hierarchical structures with micro holes of 10-30 μm in diameter and nano pits of tens of nanometers in diameter formed on both E and SE surfaces. The size of micro holes is very close to osteoblast cell, which makes them wonderful beds for osteoblast. Moreover, these two kinds of surfaces possess similar roughness and superior hydrophilicity to SLA. Reactive oxygen species were detected on E and SE surface, and thus considerable antimicrobial performance and well fixation can be speculated on them. The cell experiments also demonstrated a boost in cell attachment, and that proliferation and osteogenic differentiation were achieved on them, especially on SE surface. The results indicate that the treatment of pure titanium with H2O2/NH4OH is an effective technique to improve the initial stability of implants and enhance the osseointegration, which may be a promising surface treatment to titanium implant.
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Affiliation(s)
- Xin Yuan
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, PR China
| | - Yi Kang
- The Third Xiangya Hospital, Central South University, Changsha, PR China
| | - Jun Zuo
- Xiangya Stomatological Hospital, Central South University, Changsha, PR China
| | - Youneng Xie
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, PR China
| | - Li Ma
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, PR China
- * E-mail: (LM); (QW)
| | - Xuelei Ren
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, PR China
| | - Zeyu Bian
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, PR China
| | - Qiuping Wei
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, PR China
- * E-mail: (LM); (QW)
| | - Kechao Zhou
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, PR China
| | - Xiyang Wang
- Hunan Provincial Engineering Laboratory for High-performance Bio-engineered Biomimetic Bone Materials, Xiangya Hospital, Central South University, Changsha, PR China
| | - Zhiming Yu
- State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, PR China
- Hunan Provincial Engineering Laboratory for High-performance Bio-engineered Biomimetic Bone Materials, Xiangya Hospital, Central South University, Changsha, PR China
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13
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Lin N, Li D, Zou J, Xie R, Wang Z, Tang B. Surface Texture-Based Surface Treatments on Ti6Al4V Titanium Alloys for Tribological and Biological Applications: A Mini Review. MATERIALS 2018; 11:ma11040487. [PMID: 29587358 PMCID: PMC5951333 DOI: 10.3390/ma11040487] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/19/2018] [Accepted: 03/23/2018] [Indexed: 02/07/2023]
Abstract
Surface texture (ST) has been confirmed as an effective and economical surface treatment technique that can be applied to a great range of materials and presents growing interests in various engineering fields. Ti6Al4V which is the most frequently and successfully used titanium alloy has long been restricted in tribological-related operations due to the shortcomings of low surface hardness, high friction coefficient, and poor abrasive wear resistance. Ti6Al4V has benefited from surface texture-based surface treatments over the last decade. This review begins with a brief introduction, analysis approaches, and processing methods of surface texture. The specific applications of the surface texture-based surface treatments for improving surface performance of Ti6Al4V are thoroughly reviewed from the point of view of tribology and biology.
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Affiliation(s)
- Naiming Lin
- Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
- Shanxi Key Laboratory of Material Strength and Structure Impact, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
| | - Dali Li
- Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Jiaojuan Zou
- Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Ruizhen Xie
- Department of Civil Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China.
| | - Zhihua Wang
- Shanxi Key Laboratory of Material Strength and Structure Impact, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
| | - Bin Tang
- Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China.
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14
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Medvedev A, Neumann A, Ng H, Lapovok R, Kasper C, Lowe T, Anumalasetty V, Estrin Y. Combined effect of grain refinement and surface modification of pure titanium on the attachment of mesenchymal stem cells and osteoblast-like SaOS-2 cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:483-497. [DOI: 10.1016/j.msec.2016.10.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/17/2016] [Accepted: 10/18/2016] [Indexed: 01/17/2023]
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15
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Mohd Khalid H, Jauhari I, Mohamad Wali HA, Abdulrazzaq Mahmod S. Bioactivity and mechanical stability of Ti-6Al-4V implants superplastically embedded with hydroxyapatite in rats. Biomed Mater 2017; 12:015019. [PMID: 28120816 DOI: 10.1088/1748-605x/aa4f8b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this in vivo study, Sprague Dawley (SD) rats were used to investigate the bioactivity as well as the microstructural and mechanical properties of Ti-6Al-4V samples embedded with hydroxyapatite (HA) using two different coating methods-superplastic embedment (SPE) and superplastic deformation (SPD). The HA layer thickness for the SPE and SPD samples increased from 249.1 ± 0.6 nm to 874.8 ± 13.7 nm, and from 206.1 ± 5.8 nm to 1162.7 ± 7.9 nm respectively, after 12 weeks of implantation. The SPD sample exhibited much faster growth of newly formed HA compared to SPE. The growth of the newly formed HA was strongly dependent on the degree of HA crystallinity in the initial HA layer. After 12 weeks of implantation, the surface hardness value of the SPE and SPD samples decreased from 661 ± 0.4 HV to 586 ± 1.3 HV and from 585 ± 6.6 HV to 425 ± 86.9 HV respectively. The decrease in surface hardness values was due to the newly formed HA layer that was more porous than the initial HA layer. However, the values were still higher than the substrate surface hardness of 321 ± 28.8 HV. Wear test results suggest that the original HA layers for both samples were still strongly intact, and to a certain extent the newly grown HA layers also were strongly bound with the original HA layers. This study confirms the bioactivity and mechanical stability of the HA layer on both samples in vivo.
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Affiliation(s)
- Hidayah Mohd Khalid
- Department of Mechanical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
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16
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An accelerated buoyancy adhesion assay combined with 3-D morphometric analysis for assessing osteoblast adhesion on microgrooved substrata. J Mech Behav Biomed Mater 2016; 60:22-37. [PMID: 26773651 DOI: 10.1016/j.jmbbm.2015.12.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/15/2015] [Accepted: 12/22/2015] [Indexed: 01/16/2023]
Abstract
An accelerated negative buoyancy method has been developed to assess cell adhesion strength. This method has been used in conjunction with 3-D morphometric analysis to understand the effects of surface topology on cell response. Aligned micro-grooved surface topographies (with a range of groove depths) were produced on stainless steel 316L substrates by laser ablation. An investigation was carried out on the effect of the micro-grooved surface topography on cell adhesion strength, cell and nucleus volumes, cell phenotypic expression and attachment patterns. Increased hydrophobicity and anisotropic wettability was observed on surfaces with deeper grooves. A reduction was noted in cell volume, projected areas and adhesion sites for deeper grooves, linked to lower cell proliferation and differentiation rates and also to reduced adhesion strength. The results suggest that the centrifugation assay combined with three-dimensional cell morphometric analysis has considerable potential for obtaining improved understanding of the cell/substrate interface.
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17
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Park SW, Lee D, Lee HR, Moon HJ, Lee BR, Ko WK, Song SJ, Lee SJ, Shin K, Jang W, Yi JK, Im SG, Kwon IK. Generation of functionalized polymer nanolayer on implant surface via initiated chemical vapor deposition (iCVD). J Colloid Interface Sci 2015; 439:34-41. [DOI: 10.1016/j.jcis.2014.10.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 10/06/2014] [Accepted: 10/14/2014] [Indexed: 12/25/2022]
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18
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Giljean S, Bigerelle M, Anselme K. Roughness statistical influence on cell adhesion using profilometry and multiscale analysis. SCANNING 2014; 36:2-10. [PMID: 23165936 DOI: 10.1002/sca.21061] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 09/26/2012] [Indexed: 06/01/2023]
Abstract
In this study, two series of 11 samples of TiAl6V4 titanium alloy and 316L stainless steel have been polished in an isotropic manner at different levels in order to quantify the influence of biomaterial roughness on cell behavior. Topography was measured by a tactile profilometer and a multiscale analysis has been carried out. Human osteoblasts have been cultured on those samples. It appears that roughness has no reproducible effect on the cell behavior except an influence on cell orientation on the wider grooves. As a conclusion, biomaterial surface damage, in the roughness range between Ra = 0.01 and 0.1 μm, has no influence on cell-adhesion mechanisms when roughness is isotropic and groove width is inferior to a critical value.
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Affiliation(s)
- Sylvain Giljean
- Laboratoire Physique et Mécanique Textile (LPMT), EA 4365, Université de Haute-Alsace, Mulhouse, France
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19
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Malheiro VN, Skepper JN, Brooks RA, Markaki AE. In vitro osteoblast response to ferritic stainless steel fiber networks for magneto-active layers on implants. J Biomed Mater Res A 2012; 101:1588-98. [PMID: 23138963 DOI: 10.1002/jbm.a.34473] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 09/25/2012] [Accepted: 10/02/2012] [Indexed: 11/09/2022]
Abstract
The use of a porous coating on prosthetic components to encourage bone ingrowth is an important way of improving uncemented implant fixation. Enhanced fixation may be achieved by the use of porous magneto-active layers on the surface of prosthetic implants, which would deform elastically on application of a magnetic field, generating internal stresses within the in-growing bone. This approach requires a ferromagnetic material able to support osteoblast attachment, proliferation, differentiation, and mineralization. In this study, the human osteoblast responses to ferromagnetic 444 stainless steel networks were considered alongside those to nonmagnetic 316L (medical grade) stainless steel networks. While both networks had similar porosities, 444 networks were made from coarser fibers, resulting in larger inter-fiber spaces. The networks were analyzed for cell morphology, distribution, proliferation, and differentiation, extracellular matrix production and the formation of mineralized nodules. Cell culture was performed in both the presence of osteogenic supplements, to encourage cell differentiation, and in their absence. It was found that fiber size affected osteoblast morphology, cytoskeleton organization and proliferation at the early stages of culture. The larger inter-fiber spaces in the 444 networks resulted in better spatial distribution of the extracellular matrix. The addition of osteogenic supplements enhanced cell differentiation and reduced cell proliferation thereby preventing the differences in proliferation observed in the absence of osteogenic supplements. The results demonstrated that 444 networks elicited favorable responses from human osteoblasts, and thus show potential for use as magnetically active porous coatings for advanced bone implant applications.
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Affiliation(s)
- V N Malheiro
- Department of Engineering, University of Cambridge, Cambridge, United Kingdom
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20
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Nguyen TL, Blanquet A, Staiger MP, Dias GJ, Woodfield TBF. On the role of surface roughness in the corrosion of pure magnesium in vitro. J Biomed Mater Res B Appl Biomater 2012; 100:1310-8. [PMID: 22566378 DOI: 10.1002/jbm.b.32697] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 01/29/2012] [Accepted: 02/12/2012] [Indexed: 11/08/2022]
Abstract
The relationship between surface roughness and degradation behavior in magnesium (Mg) biomaterials is still a controversial issue. This study aims to clarify the relationship between surface roughness and corrosion rate of pure Mg. Pure Mg samples with surface roughness values (Ra) of 0.59, 2.68, and 9.12 μm were cast using an indirect solid-free form fabrication method. The in vitro corrosion behavior was evaluated using hydrogen evolution, mass loss, potentiodynamic polarization, and electrochemical impedance spectroscopy. It was confirmed that surface roughness had a significant influence on the corrosion rate of pure Mg, with increasing roughness resulting in an accelerated corrosion rate. However, pitting corrosion was not observed, suggesting that surface roughness does not affect the pitting potential of Mg.
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Affiliation(s)
- T L Nguyen
- Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
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21
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Existence of a typical threshold in the response of human mesenchymal stem cells to a peak and valley topography. Acta Biomater 2011; 7:3302-11. [PMID: 21640206 DOI: 10.1016/j.actbio.2011.05.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 05/07/2011] [Accepted: 05/11/2011] [Indexed: 11/20/2022]
Abstract
Our objective in this study was to determine whether a threshold in sensitivity of human mesenchymal stem cells (hMSC) to isotropic roughness exists. Using electrical discharge machining a very wide range of roughnesses (1.2μm<R(a)<21μm) with a perfectly isotropic, fractal and self-affine topography can be produced on titanium, with a range of roughness overlapping the hMSC length dimensions. The curve of the number of adherent hMSC after 2days culture as a function of roughness showed a U-shape with a minimum number of attached cells for a roughness amplitude R(a)=4.5μm and a distance between surface features (width of peaks and valleys) S(m)=110μm. The maximum cell number was observed at the lowest and highest roughnesses. Due to this very wide range of roughness it was possible to demonstrate that the response of hMSC to roughness varies with the dimensions of the surface features relative to the cell size. Above or below their own size hMSC essentially adhere to the nano and submicron features. When the surface displays features about the same size as hMSC the curvature of these surface features will decrease the number of attached cells by a factor of two. A modelling approach is proposed to help the interpretation of these results. It is hypothesized that this minimal adhesion is a consequence of an unfavourable stress imposed on the cell cytoskeleton.
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22
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Chen J, Bly R, Saad M, AlKhodary M, El-Backly R, Cohen D, Kattamis N, Fatta M, Moore W, Arnold C, Marei M, Soboyejo W. In-vivo study of adhesion and bone growth around implanted laser groove/RGD-functionalized Ti-6Al-4V pins in rabbit femurs. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2010.12.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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23
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Elter P, Weihe T, Lange R, Gimsa J, Beck U. The influence of topographic microstructures on the initial adhesion of L929 fibroblasts studied by single-cell force spectroscopy. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2010; 40:317-27. [PMID: 21153809 PMCID: PMC3045512 DOI: 10.1007/s00249-010-0649-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 11/11/2010] [Accepted: 11/22/2010] [Indexed: 12/13/2022]
Abstract
Single-cell force spectroscopy was used to investigate the initial adhesion of L929 fibroblasts onto periodically grooved titanium microstructures (height ~6 μm, groove width 20 μm). The position-dependent local adhesion strength of the cells was correlated with their rheological behavior. Spherical cells exhibited a significantly lower Young’s modulus (<1 kPa) than that reported for spread cells, and their elastic properties can roughly be explained by the Hertz model for an elastic sphere. While in contact with the planar regions of the substrate, the cells started to adapt their shape through slight ventral flattening. The process was found to be independent of the applied contact force for values between 100 and 1,000 pN. The degree of flattening correlated with the adhesion strength during the first 60 s. Adhesion strength can be described by fast exponential kinetics as \documentclass[12pt]{minimal}
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\begin{document}$$ C_{1} \left[ {1 - \exp \left( { - C_{2} \cdot t} \right)} \right] $$\end{document} with C1 = 2.34 ± 0.19 nN and C2 = 0.09 ± 0.02 s−1. A significant drop in the adhesion strength of up to 50% was found near the groove edges. The effect can be interpreted by the geometric decrease of the contact area, which indicates the inability of the fibroblasts to adapt to the shape of the substrate. Our results explain the role of the substrate’s topography in contact guidance and suggest that rheological cell properties must be considered in cell adhesion modeling.
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Affiliation(s)
- Patrick Elter
- Department for Interface Science, Institute for Electronic Appliances and Circuits, University of Rostock, Albert-Einstein-Str. 2, 18059 Rostock, Germany.
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24
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Anselme K, Ponche A, Bigerelle M. Relative influence of surface topography and surface chemistry on cell response to bone implant materials. Part 2: Biological aspects. Proc Inst Mech Eng H 2010; 224:1487-507. [DOI: 10.1243/09544119jeim901] [Citation(s) in RCA: 160] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A current medical challenge is the replacement of tissue which can be thought of in terms of bone tissue engineering approaches. The key problem in bone tissue engineering lies in associating bone stem cells with material supports or scaffolds that can be implanted in a patient. Beside bone tissue engineering approaches, these types of materials are used daily in orthopaedics and dental practice as permanent or transitory implants such as ceramic bone filling materials or metallic prostheses. Consequently, it is essential to better understand how bone cells interact with materials. For several years, the current authors and others have developed in vitro studies in order to elucidate the mechanisms underlying the response of human bone cells to implant surfaces. This paper reviews the current state of knowledge and proposes future directions for research in this domain.
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Affiliation(s)
- K Anselme
- Institut de Sciences des Matériaux de Mulhouse (IS2M), CNRS LRC7228, Université de Haute-Alsace, Mulhouse, France
| | - A Ponche
- Institut de Sciences des Matériaux de Mulhouse (IS2M), CNRS LRC7228, Université de Haute-Alsace, Mulhouse, France
| | - M Bigerelle
- Laboratoire Roberval, CNRS UMR6253, Centre de Recherche de Royallieu, Université de Technologie de Compiègne, Compiègne, France
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25
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Davidson P, Bigerelle M, Bounichane B, Giazzon M, Anselme K. Definition of a simple statistical parameter for the quantification of orientation in two dimensions: application to cells on grooves of nanometric depths. Acta Biomater 2010; 6:2590-8. [PMID: 20123045 DOI: 10.1016/j.actbio.2010.01.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Revised: 01/20/2010] [Accepted: 01/26/2010] [Indexed: 12/21/2022]
Abstract
Contact guidance is generally evaluated by measuring the orientation angle of cells. However, statistical analyses are rarely performed on these parameters. Here we propose a statistical analysis based on a new parameter sigma, the orientation parameter, defined as the dispersion of the distribution of orientation angles. This parameter can be used to obtain a truncated Gaussian distribution that models the distribution of the data between -90 degrees and +90 degrees. We established a threshold value of the orientation parameter below which the data can be considered to be aligned within a 95% confidence interval. Applying our orientation parameter to cells on grooves and using a modelling approach, we established the relationship sigma=alpha(meas)+(52 degrees -alpha(meas))/(1+C(GDE)R) where the parameter C(GDE) represents the sensitivity of cells to groove depth, and R the groove depth. The values of C(GDE) obtained allowed us to compare the contact guidance of human osteoprogenitor (HOP) cells across experiments involving different groove depths, times in culture and inoculation densities. We demonstrate that HOP cells are able to identify and respond to the presence of grooves 30, 100, 200 and 500 nm deep and that the deeper the grooves, the higher the cell orientation. The evolution of the sensitivity (C(GDE)) with culture time is roughly sigmoidal with an asymptote, which is a function of inoculation density. The sigma parameter defined here is a universal parameter that can be applied to all orientation measurements and does not require a mathematical background or knowledge of directional statistics.
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26
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Chen J, Paetzell E, Zhou J, Lyons L, Soboyejo W. Osteoblast-like cell ingrowth, adhesion and proliferation on porous Ti-6Al-4V with particulate and fiber scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2010. [DOI: 10.1016/j.msec.2010.01.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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27
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Factors influencing osteoblast maturation on microgrooved titanium substrata. Biomaterials 2010; 31:3804-15. [PMID: 20153892 DOI: 10.1016/j.biomaterials.2010.01.117] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Accepted: 01/19/2010] [Indexed: 01/22/2023]
Abstract
In this study, we demonstrate surfaces with various dimensions of microgrooves fabricated by photolithography and subsequent acid etching that enhance various characteristics of titanium. Microgrooves with truncated V-shape in cross-section from 15 to 90 microm widths enabled us to report their exclusive effects on altering the surface chemistry and on enhancing the surface hydrophilicity, serum protein adsorption and osteoblast maturation on titanium substrata in a microgroove dimension-dependent manner. Further, acid etching and measurement direction separately affected the surface hydrophilicity results. By multiple correlation and regression analyses, surface chemistry, surface hydrophilicity and serum protein adsorption were determined to be the significant influential factors on osteoblast maturation. Within the limitations of this study, we conclude that combined submicron- and microtopography with relevant micro-dimension and structure enhance various characteristics of titanium, including surface hydrophilicity, which act as the essential factors influencing the osteoblast maturation on microgrooved titanium substrata.
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Huag HS, Chou SH, Don TM, Lai WC, Cheng LP. Formation of microporous poly(hydroxybutyric acid) membranes for culture of osteoblast and fibroblast. POLYM ADVAN TECHNOL 2009. [DOI: 10.1002/pat.1366] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Li Y, Xiong J, Wong CS, Hodgson PD, Wen C. Ti6Ta4Sn Alloy and Subsequent Scaffolding for Bone Tissue Engineering. Tissue Eng Part A 2009; 15:3151-9. [DOI: 10.1089/ten.tea.2009.0150] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yuncang Li
- Institute for Technology Research and Innovation, Deakin University, Geelong, Victoria, Australia
| | - Jianyu Xiong
- Institute for Technology Research and Innovation, Deakin University, Geelong, Victoria, Australia
| | - Cynthia S. Wong
- Institute for Technology Research and Innovation, Deakin University, Geelong, Victoria, Australia
| | - Peter D. Hodgson
- Institute for Technology Research and Innovation, Deakin University, Geelong, Victoria, Australia
| | - Cui'e Wen
- Institute for Technology Research and Innovation, Deakin University, Geelong, Victoria, Australia
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Fu G, Soboyejo W. Cell/surface interactions of human osteo-sarcoma (HOS) cells and micro-patterned polydimelthylsiloxane (PDMS) surfaces. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2009.03.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chen J, Ulerich J, Abelev E, Fasasi A, Arnold C, Soboyejo W. An investigation of the initial attachment and orientation of osteoblast-like cells on laser grooved Ti-6Al-4V surfaces. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2008.11.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Reich U, Mueller PP, Fadeeva E, Chichkov BN, Stoever T, Fabian T, Lenarz T, Reuter G. Differential fine-tuning of cochlear implant material-cell interactions by femtosecond laser microstructuring. J Biomed Mater Res B Appl Biomater 2008; 87:146-53. [PMID: 18437711 DOI: 10.1002/jbm.b.31084] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Cochlear implants (CIs) can restore hearing in deaf patients by electrical stimulation of the auditory nerve. To optimize the electrical stimulation, the number of independent channels must be increased by reduction of connective tissue growth on the electrode surface and selective neuronal cell contact. The femtosecond laser microstructuring of the electrode surfaces was performed to investigate the effect of fibroblast growth on the implant material. A cell culture model system was established to evaluate cell-material interactions on these microstructured CI-electrode materials. Fibroblasts were used as a cell culture model for connective tissue formation, and differentiating neuronal-like cells were employed to represent neuronal cells. For nondestructive microscopic examination of living cells on the structured surfaces, the cells were genetically modified to express green fluorescent protein. To investigate the special interaction between the electrode material and the tissue we used electrode material which is originally used for manufacturing CI for human applications, namely platinum (contact material) and silicone carrier material (LSR 30, HCRP 50). Microstructures of various dimensions (groove width 1-10 microm) were generated by using femtosecond laser ablation. The highest fibroblast growth rate was observed on platinum, but cell growth rates on the silicone carrier material were lower. Microstructuring reduced fibroblast cell growth on platinum significantly. On the microstructured silicone, a trend to lower cell growth rates was observed. In addition, microgrooves on platinum surfaces can direct neurite outgrowth parallel to the grooves. The implications of the results are discussed with respect to the design of a microstructured CI surface.
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Affiliation(s)
- Uta Reich
- Department of Otolaryngology, Medical University of Hannover, Hannover, Germany.
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