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Abstract
Selective laser melting (SLM) is emerging as a promising 3D printing method for orthopedic and dental applications. However, SLM-based Ti6Al4V components frequently exhibit high roughness values and partial surface defects. Laser polishing (LP) is a newly developed technology to improve the surface quality of metals. In this research, LP is applied to improve the surface finish of components. The results show that the laser beam can neatly ablate the aggregates of metallic globules and repair cracks and pores on the surface, resulting in a smooth surface with nanocomposites. Overall, the results indicate that using LP optimizes surface morphology to favor fatigue behavior and osteoblastic differentiation. These findings provide foundational data to improve the surface roughness of a laser-polished implant and pave the way for optimized mechanical behavior and biocompatibility via the laser process.
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Yu Y, Ran Q, Shen X, Zheng H, Cai K. Enzyme responsive titanium substrates with antibacterial property and osteo/angio-genic differentiation potentials. Colloids Surf B Biointerfaces 2019; 185:110592. [PMID: 31639570 DOI: 10.1016/j.colsurfb.2019.110592] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 10/12/2019] [Accepted: 10/14/2019] [Indexed: 12/11/2022]
Abstract
After implantation into a host, titanium (Ti) orthopaedic materials are facing two major clinical challenges: bacterial infection and aseptic loosening, which directly determine the long-term survival of the implant. To endow Ti implant with self-defensive antibacterial properties and desirable osteo/angio-genic differentiation potentials, hyaluronic acid (HA)-gentamicin (Gen) conjugates (HA-Gen) and chitosan (Chi) polyelectrolyte multilayers were constructed on deferoxamine (DFO) loaded titania nanotubes (TNT) substrates via layer-by-layer (LBL) assembly technique, termed as TNT/DFO/HA-Gen. The HA-Gen conjugate was characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (1H NMR). The physicochemical properties of the substrates were characterized by field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and contact angle measurements. The on-demand DFO release was associated with the degradation of multilayers triggered by exogenous hyaluronidase, which indicated enzymatic and bacterial responsiveness. The TNT/DFO/HA-Gen substrates displayed effective antifouling and antibacterial properties against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), while were favourable for the adhesion, proliferation and osteo/angio-genic differentiation of mesenchymal stem cells (MSCs). The multifaceted drug-device combination (DDC) strategy showed potential applications in orthopaedic fields.
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Affiliation(s)
- Yonglin Yu
- Department of Pathology, Affiliated Hospital of Zunyi Medical College, Zunyi 563003, China.
| | - Qichun Ran
- School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Xinkun Shen
- School of Life Science, Chongqing University, Chongqing 400044, China
| | - Hong Zheng
- Department of Pathology, Affiliated Hospital of Zunyi Medical College, Zunyi 563003, China.
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China.
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53
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Osteoblasts grown on microroughened titanium surfaces regulate angiogenic growth factor production through specific integrin receptors. Acta Biomater 2019; 97:578-586. [PMID: 31349056 DOI: 10.1016/j.actbio.2019.07.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/27/2019] [Accepted: 07/22/2019] [Indexed: 01/08/2023]
Abstract
Cellular attachment and response to biomaterials are mediated by integrin receptor binding to extracellular matrix proteins adsorbed onto the material surface. Osteoblasts interact with their substrates via several integrin complexes including fibronectin-binding α5β1 and collagen-binding α1β1 and α2β1. Knockdown of α2 or β1 integrin subunits inhibits the production of factors that promote an osteogenic microenvironment, including osteocalcin, osteoprotegerin, and TGFβ1. Osteoblasts also secrete several angiogenic growth factors such as VEGF-A (VEGF165), FGF-2, and angiopoietin 1, which are regulated by titanium surface topography and surface energy. Here, we examined whether signaling through integrin receptor complexes regulates production and secretion of angiogenic factors during osteoblast differentiation on microtextured Ti surfaces. To do this, integrin subunits α1, α2, α5, and β1 were stably silenced in MG63 osteoblast-like cells cultured on grit-blasted/acid-etched hydrophobic Ti (SLA) or on hydrophilic SLA (modSLA). VEGF-A production increased in response to Ti surface topography and energy in integrin α2, α5, and β1 silenced cells but decreased in α1-silenced cells. FGF-2 decreased on modSLA substrates in both α1 and α2-silenced cells but was unchanged in response to silencing of either α5 or β1. In integrin α1, α2, and β1-silenced cells, Ang-1 increased on modSLA but α5-silencing did not affect Ang-1 production during surface mediated differentiation. These results suggest that signaling through specific integrin receptor complexes during osteoblast differentiation on microstructured Ti substrates, regulates the production of angiogenic factors by those cells, and this is differentially regulated by surface hydrophilicity. STATEMENT OF SIGNIFICANCE: Successful implantation of synthetic biomaterials into bone depends on the biological process known as osseointegration. Osseointegration is a highly regulated communication of cells that orchestrates the migration of progenitor cells towards the implant site and promotes the deposition and mineralization of extracellular matrix proteins within the implant microenvironment, to tightly join the implant to native bone. In this process, angiogenesis functions as the initiation site of progenitor cell migration and is necessary for matrix deposition by providing the necessary nutrients for bone formation. In the present study, we show a novel regulation of specific angiogenic growth factors by integrin receptor complexes. This research is important to develop biomaterials that promote and maintain osseointegration through proper vascularization and prevent implant failure in patients lacking sufficient angiogenesis.
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54
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Jiang N, Guo Z, Sun D, Ay B, Li Y, Yang Y, Tan P, Zhang L, Zhu S. Exploring the mechanism behind improved osteointegration of phosphorylated titanium implants with hierarchically structured topography. Colloids Surf B Biointerfaces 2019; 184:110520. [PMID: 31590052 DOI: 10.1016/j.colsurfb.2019.110520] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/09/2019] [Accepted: 09/21/2019] [Indexed: 02/05/2023]
Abstract
Titanium (Ti) and its alloys have been frequently used in dental and orthopedic implants, but the undesired oxide layer easily formed on the surface tends to be the cause of implant failure for Ti-based implants. To address this problem, we herein prepared a phosphorylated Ti coating (TiP-Ti) with a micro/nano hierarchically structured topography on commercially pure Ti implants by a hydrothermal method to improve its osteointegration capacity. The surface morphology, chemical composition, and biological activity were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), contact-angle measurement, and protein adsorption assay. Osteointegration of TiP-Ti implants in rat tibia was investigated by biomechanical testing, micro-CT and histological analyses. We further explored the proposed mechanism which improves osteointegration of TiP-Ti implants by proliferation, adhesion, and differentiation assays of rat bone marrow mesenchymal stem cells (BMSCs). Our results demonstrated that the improved osteointegration mainly benefited from the better spread and adhesion of BMSCs on the micro/nano hierarchically structured TiP-Ti surfaces compared to hydroxyapatite coated Ti (HA-Ti), the positive control, and untreated Ti (untreated-Ti), the negative control. In conclusion, TiP-Ti surface is a promising candidate implant surface design to accelerate the osteointegration of Ti-based implants in biomedical applications.
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Affiliation(s)
- Nan Jiang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease & West China Hospital of Stomatology, Analytical and Testing Center, Sichuan University, Chengdu 610065, China
| | - Zhijun Guo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease & West China Hospital of Stomatology, Analytical and Testing Center, Sichuan University, Chengdu 610065, China
| | - Dan Sun
- School of Mechanical and Aerospace Engineering, Queens University Belfast, Belfast BT7 1NN, UK
| | - Birol Ay
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, M5S 3E3, Canada
| | - Yubao Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease & West China Hospital of Stomatology, Analytical and Testing Center, Sichuan University, Chengdu 610065, China
| | - Yutao Yang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease & West China Hospital of Stomatology, Analytical and Testing Center, Sichuan University, Chengdu 610065, China
| | - Peijie Tan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease & West China Hospital of Stomatology, Analytical and Testing Center, Sichuan University, Chengdu 610065, China
| | - Li Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease & West China Hospital of Stomatology, Analytical and Testing Center, Sichuan University, Chengdu 610065, China.
| | - Songsong Zhu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease & West China Hospital of Stomatology, Analytical and Testing Center, Sichuan University, Chengdu 610065, China.
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55
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Bouet G, Cabanettes F, Bidron G, Guignandon A, Peyroche S, Bertrand P, Vico L, Dumas V. Laser-Based Hybrid Manufacturing of Endosseous Implants: Optimized Titanium Surfaces for Enhancing Osteogenic Differentiation of Human Mesenchymal Stem Cells. ACS Biomater Sci Eng 2019; 5:4376-4385. [PMID: 33438403 DOI: 10.1021/acsbiomaterials.9b00769] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Additive manufacturing (AM) is becoming increasingly important in the orthopedic and dental sectors thanks to two major advantages: the possibility of custom manufacturing and the integration of complex structures. However, at smaller scales, surface conditions of AM products are not mastered. Numerous non-fused powder particles give rise to roughness values (Sa) greater than 10 μm, thus limiting biomedical applications since the surface roughness of, e.g., metal implants plays a major role in the quality and rate of osseointegration. In this study, an innovative hybrid machine combining AM and a femtosecond laser (FS) was used to obtain Ti6Al4V parts with biofunctional surfaces. During the manufacturing process, the FS laser beam "neatly" ablates the surface, leaving in its path nanostructures created by the laser/matter interaction. This step decreases the Sa from 11 to 4 μm and increases the surface wettability. The behavior of human mesenchymal stem cells was evaluated on these new AM+FS surfaces and compared with that on AM surfaces and also on polished surfaces. The number of cells attached 24 h after plating is equivalent on all surfaces, but cell spreading is higher on AM+FS surfaces compared with their AM counterparts. In the longer term (days 7 and 14), fibronectin and collagen synthesis increase on AM+FS surfaces as opposed to AM alone. Alkaline phosphatase activity, osteocalcin production, and mineralization, markers of osteogenic differentiation, are significantly lower on raw AM surfaces, whereas on the AM+FS specimens they display a level equivalent to that on the polished surface. Overall, these results indicate that using an FS laser beam during the fabrication of AM parts optimizes surface morphology to favor osteoblastic differentiation. This new hybrid machine could make it possible to produce AM implants with functional surfaces directly at the end of AM, thereby limiting their post-treatments.
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Affiliation(s)
- Guenaelle Bouet
- Ecole Nationale d'Ingénieurs de Saint-Etienne, Laboratoire de Tribologie et Dynamique des Systèmes, UMR 5513 CNRS, University of Lyon, 58, rue Jean Parot, 42023 Saint-Etienne, France
| | - Frédéric Cabanettes
- Ecole Nationale d'Ingénieurs de Saint-Etienne, Laboratoire de Tribologie et Dynamique des Systèmes, UMR 5513 CNRS, University of Lyon, 58, rue Jean Parot, 42023 Saint-Etienne, France
| | - Guillaume Bidron
- GIE Manutech-USD (Ultrafast Surface Design), 20 Rue Professeur Benoît Lauras, 42000 Saint-Etienne, France
| | - Alain Guignandon
- INSERM U1059-SAINBIOSE, University of Lyon, 42270 Saint-Priest-en-Jarez, France
| | - Sylvie Peyroche
- INSERM U1059-SAINBIOSE, University of Lyon, 42270 Saint-Priest-en-Jarez, France
| | - Philippe Bertrand
- Ecole Nationale d'Ingénieurs de Saint-Etienne, Laboratoire de Tribologie et Dynamique des Systèmes, UMR 5513 CNRS, University of Lyon, 58, rue Jean Parot, 42023 Saint-Etienne, France
| | - Laurence Vico
- INSERM U1059-SAINBIOSE, University of Lyon, 42270 Saint-Priest-en-Jarez, France
| | - Virginie Dumas
- Ecole Nationale d'Ingénieurs de Saint-Etienne, Laboratoire de Tribologie et Dynamique des Systèmes, UMR 5513 CNRS, University of Lyon, 58, rue Jean Parot, 42023 Saint-Etienne, France
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56
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Hu C, Ashok D, Nisbet DR, Gautam V. Bioinspired surface modification of orthopedic implants for bone tissue engineering. Biomaterials 2019; 219:119366. [PMID: 31374482 DOI: 10.1016/j.biomaterials.2019.119366] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/27/2019] [Accepted: 07/14/2019] [Indexed: 12/25/2022]
Abstract
Biomedical implants have been widely used in various orthopedic treatments, including total hip arthroplasty, joint arthrodesis, fracture fixation, non-union, dental repair, etc. The modern research and development of orthopedic implants have gradually shifted from traditional mechanical support to a bioactive graft in order to endow them with better osteoinduction and osteoconduction. Inspired by structural and mechanical properties of natural bone, this review provides a panorama of current biological surface modifications for facilitating the interaction between medical implants and bone tissue and gives a future outlook for fabricating the next-generation multifunctional and smart implants by systematically biomimicking the physiological processes involved in formation and functioning of bones.
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Affiliation(s)
- Chao Hu
- Research School of Engineering, Australian National University, ACT, 2601, Australia
| | - Deepu Ashok
- Research School of Engineering, Australian National University, ACT, 2601, Australia
| | - David R Nisbet
- Research School of Engineering, Australian National University, ACT, 2601, Australia
| | - Vini Gautam
- John Curtin School of Medical Research, Australian National University, ACT, 2601, Australia.
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57
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Al-Jandan B. Effect of antiangiogenic targeted chemotherapy on the osseointegration of titanium implants in rabbits. Br J Oral Maxillofac Surg 2019; 57:157-163. [DOI: 10.1016/j.bjoms.2019.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 01/09/2019] [Indexed: 01/01/2023]
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58
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Gomez TW, Gopal RV, Gaffoor FMA, Kumar STR, Girish CS, Prakash R. Comparative evaluation of angiogenesis using a novel platelet-rich product: An in vitro study. J Conserv Dent 2019; 22:23-27. [PMID: 30820078 PMCID: PMC6385567 DOI: 10.4103/jcd.jcd_216_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Background: In vivo angiogenesis is normal and vital process in growth and development, wound healing, and formation of granulation tissue wherein new blood vessels form from preexisting vessels as part of revascularization. Platelet-rich products promote wound healing associated with angiogenesis. Biomaterials such as titanium were found to be angiogenic. Unlike in vivo situations, in vitro angiogenesis, study cells, within a controlled environment. Aims: The aim of this study is to evaluate the angiogenic potential of a novel platelet-rich product. Materials and Methods: Blood was drawn from volunteers with informed consent. Blood samples were centrifuged to obtain platelet-rich products. Platelet concentrates prepared were platelet-rich plasma (PRP), platelet-rich fibrin, and a novel platelet-rich product which is titanium-prepared PRP (TPRP), obtained using titanium. The study which compared platelet concentrate was divided into four groups subjected to tissue culture. Phase-contrast microscope was used to determine the rate of growth by cell counting. Statistical Analysis: ANOVA was used for comparison within groups and post hoc for multiple comparisons. Results: TPRP group showed granular ground substance. Group with platelet-rich fibrin (PRF) shows a high rate of growth whereas those with TPRP showed better growth rate when compared to its counterpart, PRP. Conclusions: This is the first study which introduces TPRP. Previous studies have proved that titanium-prepared PRF has better structural quality than its counterpart platelet-rich fibrin. This study concludes that TPRP has better angiogenic potential than its counterpart PRP. Further in vivo studies are needed to promote TPRP as a new generation of platelet products.
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Affiliation(s)
- Treesa William Gomez
- Department of Conservative and Endodontics, Noorul Islam College of Dental Science, Kerala University of Health Sciences, Thiruvananthapuram, Kerala, India
| | - Rajesh V Gopal
- Department of Conservative and Endodontics, Noorul Islam College of Dental Science, Kerala University of Health Sciences, Thiruvananthapuram, Kerala, India
| | - Faisal M A Gaffoor
- Department of Conservative and Endodontics, Noorul Islam College of Dental Science, Kerala University of Health Sciences, Thiruvananthapuram, Kerala, India
| | - Santhosh T R Kumar
- Department of Biotechnology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India
| | - C Sabari Girish
- Department of Conservative and Endodontics, Noorul Islam College of Dental Science, Kerala University of Health Sciences, Thiruvananthapuram, Kerala, India
| | - R Prakash
- Department of Biotechnology, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, Kerala, India
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59
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Raines AL, Berger MB, Patel N, Hyzy SL, Boyan BD, Schwartz Z. VEGF-A regulates angiogenesis during osseointegration of Ti implants via paracrine/autocrine regulation of osteoblast response to hierarchical microstructure of the surface. J Biomed Mater Res A 2018; 107:423-433. [PMID: 30461195 DOI: 10.1002/jbm.a.36559] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 09/24/2018] [Accepted: 10/08/2018] [Indexed: 12/22/2022]
Abstract
Establishment of a patent vasculature at the bone-implant interface plays a significant role in determining overall success of orthopedic and dental implants. Osteoblasts produce vascular endothelial growth factor-A (VEGF-A), an important regulator of angiogenesis during bone formation and healing, and the amount secreted is sensitive to titanium (Ti) surface microtopography and surface energy. The purpose of this study was to determine if surface properties modulate cellular response to VEGF-A. MG63 osteoblast-like cells were transfected with shRNA targeting VEGF-A at >80% knockdown. Cells stably silenced for VEGF-A secreted reduced levels of osteocalcin, osteoprotegerin, FGF-2, and angiopoietin-1 when cultured on grit-blasted/acid-etched (SLA) and hydrophilic SLA (modSLA) Ti surfaces and conditioned media from these cultures caused reduced angiogenesis in an endothelial tubule formation assay. Treatment of MG63 cells with 20 ng/mL rhVEGF-A165 rescued production in silenced cells and increased production of osteocalcin, osteoprotegerin, FGF-2, and angiopoietin-1, with greatest effects on control cells cultured on modSLA. Addition of a neutralization antibody against VEGF receptor 2 (VEGFR2; Flk-1) resulted in a significant increase in VEGF-A production. Overall, this study indicates that VEGF-A has two roles in osseointegration: enhanced angiogenesis and an autocrine/paracrine role in maturation of osteoblast-like cells in response to Ti surface properties. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 423-433, 2019.
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Affiliation(s)
- Andrew L Raines
- Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Michael B Berger
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Nehal Patel
- Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Sharon L Hyzy
- Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, Georgia Institute of Technology, Atlanta, Georgia, USA.,Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Barbara D Boyan
- Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, Georgia Institute of Technology, Atlanta, Georgia, USA.,Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Zvi Schwartz
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, USA.,Department of Periodontology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
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60
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He X, Zhang X, Li J, Hang R, Huang X, Yao X, Qin L, Tang B. Titanium-based implant comprising a porous microstructure assembled with nanoleaves and controllable silicon-ion release for enhanced osseointegration. J Mater Chem B 2018; 6:5100-5114. [PMID: 32254538 DOI: 10.1039/c8tb00713f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Osseointegration is crucial for early fixation as well as for long-term implantation success, hence numerous efforts have been made to tune the surface topography or chemical composition of biomedical implants to improve osseointegration. In this work, various nanostructures, including nanoflocs, nanobundles, nanorods, and nanoleaves, were introduced to the surface of silicon (Si)-incorporated microporous structure to form Si-incorporated micro-nano hierarchical structures on titanium (Ti)-based implants. The osseointegration of the implants were systemically assessed in vivo and in vitro. The in vitro evaluations showed that the nanostructures promoted the protein adsorption, thus modulating the early cellular responses, including the attachment and spreading of osteoblasts and human endothelial cells (HUVECs), and subsequent cell proliferation and differentiation. Furthermore, compared with the single microporous structure, the nanostructures located over the microporous structure protected the Si ions from quick release and allowed the long-term sustained Si-ions release, which further contributed to the proliferation and differentiation of osteoblasts and vascular endothelial growth factor (VEGF) secretion as well as the tube formation of HUVECs. Collectively, the favorable nano-surface structures, especially the nanoleaves structure, and the constant Si-ion release together led to robust osteogenic and angiogenic activities. More importantly, in vivo micro-CT evaluation and histological observations further verified that the Si-incorporated micro-nano hierarchical implant with nanoleaves structure could efficiently promote new bone formation, thus indicating it was an attractive candidate as a next-generation bone-implant material.
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Affiliation(s)
- Xiaojing He
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China.
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61
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Li S, Yu W, Zhang W, Zhang G, Yu L, Lu E. Evaluation of highly carbonated hydroxyapatite bioceramic implant coatings with hierarchical micro-/nanorod topography optimized for osseointegration. Int J Nanomedicine 2018; 13:3643-3659. [PMID: 29983560 PMCID: PMC6027846 DOI: 10.2147/ijn.s159989] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background Optimal osseointegration has been recognized as a pivotal factor in determining the long-term success of biomedical implants. Materials and methods In the current study, highly carbonated hydroxyapatite (CHA) with carbonate contents of 8, 12 and 16 wt% and pure hydroxyapatite (HA) were fabricated via a novel hydrothermal method and deposited on the titanium substrates to generate corresponding CHA bioceramic coatings (designated as C8, C12 and C16, respectively) and HA bioceramic coatings (designated as C0). Results C8, C12 and C16 were endowed with nanoscale, hierarchical hybrid micro-/nanoscale and microscale surface topographies with rod-like superstructures, respectively. Compared with C0, the micro-/nanotextured CHA bioceramic coatings (C8, C12 and C16) possessed excellent surface bioactivity and biocompatibility, as well as better wettability, which mediated improved protein adsorption, giving rise to simultaneous enhancement of a biological cascade of events of rat bone-marrow-derived mesenchymal stem cells including cell adhesion, proliferation, osteogenic differentiation and, notably, the production of the pro-angiogenic growth factor, vascular endothelial growth factor-A. In particular, C12 with biomimetic hierarchical hybrid micro-/nanorod topography exhibited superior fractal property and predominant performance of protein adsorption, cell adhesion, proliferation and osteogenesis concomitant with angiogenesis. Conclusion All these results suggest that the 12 wt% CHA bioceramic coating with synergistic modification of surface chemistry and topography has great prospect for future use as implant coating to achieve optimum osseointegration for orthopedic and dental applications.
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Affiliation(s)
- Shuang Li
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China, ; .,Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Weijun Yu
- College of Stomatology, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China
| | - Weiqi Zhang
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China, ;
| | - Guohua Zhang
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China, ;
| | - Li Yu
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China, ;
| | - Eryi Lu
- Department of Stomatology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, People's Republic of China, ;
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62
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Li Y, Wang W, Liu H, Lei J, Zhang J, Zhou H, Qi M. Formation and in vitro/in vivo performance of “cortex-like” micro/nano-structured TiO 2 coatings on titanium by micro-arc oxidation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 87:90-103. [DOI: 10.1016/j.msec.2018.02.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/17/2017] [Accepted: 02/24/2018] [Indexed: 12/20/2022]
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63
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Zhao H, Huang Y, Zhang W, Guo Q, Cui W, Sun Z, Eglin D, Liu L, Pan G, Shi Q. Mussel-Inspired Peptide Coatings on Titanium Implant to Improve Osseointegration in Osteoporotic Condition. ACS Biomater Sci Eng 2018; 4:2505-2515. [PMID: 33435114 DOI: 10.1021/acsbiomaterials.8b00261] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Huan Zhao
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, China
- Orthopedic Institute, Soochow University, 708 Renmin Road, Suzhou, 215007, China
| | - Yingkang Huang
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, China
- Orthopedic Institute, Soochow University, 708 Renmin Road, Suzhou, 215007, China
| | - Wen Zhang
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, China
- Orthopedic Institute, Soochow University, 708 Renmin Road, Suzhou, 215007, China
| | - Qianping Guo
- Orthopedic Institute, Soochow University, 708 Renmin Road, Suzhou, 215007, China
| | - Wenguo Cui
- Orthopedic Institute, Soochow University, 708 Renmin Road, Suzhou, 215007, China
| | - Zhiyong Sun
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, China
| | - David Eglin
- AO Research Institute Davos, Clavadelerstrasse 8, Davos, 7270, Switzerland
| | - Lei Liu
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Guoqing Pan
- Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Qin Shi
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, China
- Orthopedic Institute, Soochow University, 708 Renmin Road, Suzhou, 215007, China
- Key Laboratory of Stem Cells and Biomedical Materials of Jiangsu Province and Chinese Ministry of Science and Technology, 199 Renai Road, Suzhou, 215123, China
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Gu M, Lv L, Du F, Niu T, Chen T, Xia D, Wang S, Zhao X, Liu J, Liu Y, Xiong C, Zhou Y. Effects of thermal treatment on the adhesion strength and osteoinductive activity of single-layer graphene sheets on titanium substrates. Sci Rep 2018; 8:8141. [PMID: 29802306 PMCID: PMC5970187 DOI: 10.1038/s41598-018-26551-w] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 05/09/2018] [Indexed: 01/22/2023] Open
Abstract
In recent years, dental implants have become the preferred approach for the restoration of missing teeth. At present, most dental implants are made of pure titanium, and are affected by peri-implantitis and bone resorption, which usually start from the implant neck, due to the complex environment in this region. To address these issues, in this study we modified the surface of titanium (Ti) implants to exploit the antibacterial and osteoinductive effects of single-layer graphene sheets. Chemical vapor deposition (CVD)-grown single-layer graphene sheets were transferred to titanium discs, and a method for improving the adhesion strength of graphene on Ti was developed due to compromised adhesion strength between graphene and titanium surface. A thermal treatment of 2 h at 160 °C was found to enhance the adhesion strength of graphene on Ti to facilitate clinical transformation. Graphene coatings of Ti enhanced cell adhesion and osteogenic differentiation, and imparted antibacterial activity to Ti substrate; these favorable effects were not affected by the thermal treatment. In summary, the present study elucidated the effects of a thermal treatment on the adhesion strength and osteoinductive activity of single-layer graphene sheets on titanium substrates.
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Affiliation(s)
- Ming Gu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Avenue South, Beijing, 100081, PR China
| | - Longwei Lv
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Avenue South, Beijing, 100081, PR China
| | - Feng Du
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, 100871, PR China
| | - Tianxiao Niu
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, 100871, PR China
| | - Tong Chen
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Avenue South, Beijing, 100081, PR China
| | - Dandan Xia
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Avenue South, Beijing, 100081, PR China
| | - Siyi Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Avenue South, Beijing, 100081, PR China
| | - Xiao Zhao
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Avenue South, Beijing, 100081, PR China
| | - Jianzhang Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Avenue South, Beijing, 100081, PR China
| | - Yunsong Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Avenue South, Beijing, 100081, PR China. .,National Engineering Laboratory for Digital and Material Technology of Stomatology, National Clinical Research Center for Oral Disease, Beijing Key Laboratory of Digital Stomatology, Beijing, 100081, PR China.
| | - Chunyang Xiong
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, 100871, PR China
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun Avenue South, Beijing, 100081, PR China.,National Engineering Laboratory for Digital and Material Technology of Stomatology, National Clinical Research Center for Oral Disease, Beijing Key Laboratory of Digital Stomatology, Beijing, 100081, PR China
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65
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An Y, Song Y, Wang Z, Wang J, Wu G, Zhu G, Chen L. Effect of low-intensity pulsed ultrasound on the biological behaviors of bone marrow mesenchymal stem cells on titanium with different surface topographies. Am J Transl Res 2018; 10:67-76. [PMID: 29422994 PMCID: PMC5801347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 10/18/2017] [Indexed: 06/08/2023]
Abstract
The use of low-intensity pulsed ultrasound (LIPUS) is a promising approach to promote osteogenesis. However, few studies have reported the influence of this technique on the osseointegration of endosseous implants, especially regarding different implant topographies. We focused on how the initial interaction between cells and the titanium surface is enhanced by LIPUS and the potential regulatory mechanisms. The bone marrow mesenchymal stem cells (BMSCs) of rats were cultured on two types of titanium surfaces (polished surface, Flat and large grain blast acid etched, SLA) under LIPUS stimulation or control conditions. The cell proliferation on the implant surfaces was significantly promoted by LIPUS, which stimulated the increase in the number of microfilaments, pseudopodia formed and extracellular matrix mineralization nodules compared with those in the control group. The expression of osteogenesis-related genes, including OPN, OCN, BMP-2, ALP, Runx2 and Col-1, were up-regulated on all the surfaces by LIPUS stimulation. Our findings suggest that LIPUS enhances osteoblast differentiation from BMSCs on titanium surfaces. The use of LIPUS might be a potential adjuvant treatment to improve the osseointegration process.
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Affiliation(s)
- Yanxin An
- Department of Orthodontics, School of Stomatology, Shandong UniversityJinan, Shandong Province, People’s Republic of China
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, School of Stomatology, Shandong UniversityWenhua Xi Road No. 44-1, Jinan 250012, Shandong Province, People’s Republic of China
- Department of General Surgery, Jinan Military General HospitalJinan 250031, Shandong Province, People’s Republic of China
| | - Yan Song
- Department of Stomatology, Jinan Military General HospitalJinan 250031, Shandong Province, People’s Republic of China
| | - Zhaoling Wang
- Department of Stomatology, Jinan Military General HospitalJinan 250031, Shandong Province, People’s Republic of China
| | - Jing Wang
- Department of Stomatology, Jinan Military General HospitalJinan 250031, Shandong Province, People’s Republic of China
| | - Gaoyi Wu
- Department of Stomatology, Jinan Military General HospitalJinan 250031, Shandong Province, People’s Republic of China
| | - Guoxiong Zhu
- Department of Stomatology, Jinan Military General HospitalJinan 250031, Shandong Province, People’s Republic of China
| | - Lei Chen
- Department of Orthodontics, School of Stomatology, Shandong UniversityJinan, Shandong Province, People’s Republic of China
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, School of Stomatology, Shandong UniversityWenhua Xi Road No. 44-1, Jinan 250012, Shandong Province, People’s Republic of China
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66
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Tang D, Yang LY, Ou KL, Oreffo ROC. Repositioning Titanium: An In Vitro Evaluation of Laser-Generated Microporous, Microrough Titanium Templates As a Potential Bridging Interface for Enhanced Osseointegration and Durability of Implants. Front Bioeng Biotechnol 2017; 5:77. [PMID: 29322044 PMCID: PMC5732141 DOI: 10.3389/fbioe.2017.00077] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/23/2017] [Indexed: 11/21/2022] Open
Abstract
Although titanium alloys remain the preferred biomaterials for the manufacture of biomedical implants today, such devices can fail within 15 years of implantation due to inadequate osseointegration. Furthermore, wear debris toxicity due to alloy metal ion release has been found to cause side-effects including neurotoxicity and chronic inflammation. Titanium, with its known biocompatibility, corrosion resistance, and high elastic modulus, could if harnessed in the form of a superficial scaffold or bridging device, resolve such issues. A novel three-dimensional culture approach was used to investigate the potential osteoinductive and osseointegrative capabilities of a laser-generated microporous, microrough medical grade IV titanium template on human skeletal stem cells (SSCs). Human SSCs seeded on a rough 90-µm pore surface of ethylene oxide-sterilized templates were observed to be strongly adherent, and to display early osteogenic differentiation, despite their inverted culture in basal conditions over 21 days. Limited cellular migration across the template surface highlighted the importance of high surface wettability in maximizing cell adhesion, spreading and cell-biomaterial interaction, while restricted cell ingrowth within the conical-shaped pores underlined the crucial role of pore geometry and size in determining the extent of osseointegration of an implant device. The overall findings indicate that titanium only devices, with appropriate optimizations to porosity and surface wettability, could yet play a major role in improving the long-term efficacy, durability, and safety of future implant technology.
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Affiliation(s)
- Daniel Tang
- Centre for Human Development, Stem Cells and Regeneration, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Liang-Yo Yang
- Department of Physiology, School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan.,Research Center for Biotechnology, China Medical University Hospital, China Medical University, Taichung, Taiwan.,Department of Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Keng-Liang Ou
- Department of Dentistry, Cathay General Hospital, Taipei, Taiwan.,Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan.,Department of Dentistry, Taipei Medical University - Shuang Ho Hospital, New Taipei City, Taiwan.,3D Global Biotech Inc., New Taipei City, Taiwan
| | - Richard O C Oreffo
- Centre for Human Development, Stem Cells and Regeneration, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
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67
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Nethi SK, P NAA, Rico-Oller B, Rodríguez-Diéguez A, Gómez-Ruiz S, Patra CR. Design, synthesis and characterization of doped-titanium oxide nanomaterials with environmental and angiogenic applications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 599-600:1263-1274. [PMID: 28525935 DOI: 10.1016/j.scitotenv.2017.05.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 04/30/2017] [Accepted: 05/01/2017] [Indexed: 06/07/2023]
Abstract
Since the last decade, the metal composite nanostructures have evolved as promising candidates in regard to their wide applications in the fields of science and engineering. Recently, several investigators identified the titanium based nanomaterials as excellent agents for multifunctional environmental and biomedical applications. In this perspective, we have developed a series of zinc-doped (2 and 5%) titanium oxide-based nanomaterials using various reaction conditions and calcination temperatures (TZ1-TZ3: calcined at 500°C, TZ4-TZ6: calcined at 600°C and TZ7-TZ9: calcined at 700°C). The calcined materials (TZ1 to TZ9) were thoroughly analyzed by several physico-chemical characterization methods. The increase of the calcination temperature results in significant changes of the textural properties of the nanostructured materials. In addition, the increase of the calcination temperature leads to the formation of anatase/rutile mixtures with higher quantity of rutile. Furthermore, incorporation of zinc changes the morphology of the obtained nanoparticles. The materials were studied in the photodegradation of methylene blue observing that materials calcined at lower temperatures (TZ1-TZ3) have higher photocatalytic activity than those of the materials calcined at 600°C (TZ4-TZ6), rutile-based systems TZ7-TZ9 are not active. Based on the background literature of titanium and zinc based nanostructures in therapeutic angiogenesis, we have explored the pro-angiogenic properties of these materials using various in vitro and in vivo assays. The zinc-doped titanium dioxide nanostructures (TZ5 and TZ6) exhibited increased cell viability, proliferation, enhanced S-phase cell population, increased pro-angiogenic messengers (ROS: reactive oxygen species and NO: nitric oxide) production and promoted in vivo blood vessel formation in a plausible mechanistic p38/STAT3 dependent signaling cascade. Altogether, the results of the present study showcase these zinc doped-titanium oxide nanoparticles as promising candidates for environmental (water-remediation) and therapeutic angiogenic applications.
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Affiliation(s)
- Susheel Kumar Nethi
- Department of Chemical Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, Telangana State, India
| | - Neeraja Aparna Anand P
- Department of Chemical Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, Telangana State, India
| | - Beatriz Rico-Oller
- Departamento de Biología y Geología, Física y Química Inorgánica, ESCET, Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Spain
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Granada, Avda Fuentenueva s/n, 18071 Granada, Spain
| | - Santiago Gómez-Ruiz
- Departamento de Biología y Geología, Física y Química Inorgánica, ESCET, Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Spain.
| | - Chitta Ranjan Patra
- Department of Chemical Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, Telangana State, India.
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68
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Boyan BD, Lotz EM, Schwartz Z. * Roughness and Hydrophilicity as Osteogenic Biomimetic Surface Properties. Tissue Eng Part A 2017; 23:1479-1489. [PMID: 28793839 DOI: 10.1089/ten.tea.2017.0048] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Successful dental and orthopedic implant outcomes are determined by the degree of osseointegration. Over the last 60 years, endosseous implants have evolved to stimulate osteogenesis without the need for exogenous biologics such as bone morphogenetic proteins. An understanding of the interaction between cells and the physical characteristics of their environments has led to development of bioactive implants. Implant surfaces that mimic the inherent chemistry, topography, and wettability of native bone have shown to provide cells in the osteoblast lineage with the structural cues to promote tissue regeneration and net new bone formation. Studies show that attachment, proliferation, differentiation, and local factor production are sensitive to these implant surface characteristics. This review focuses on how surface properties, including chemistry, topography, and hydrophilicity, modulate protein adsorption, cell behavior, biological reactions, and signaling pathways in peri-implant bone tissue, allowing the development of true biomimetics that promote osseointegration by providing an environment suitable for osteogenesis.
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Affiliation(s)
- Barbara D Boyan
- 1 Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University , Richmond, Virginia.,2 Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology , Atlanta, Georgia
| | - Ethan M Lotz
- 1 Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University , Richmond, Virginia
| | - Zvi Schwartz
- 1 Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University , Richmond, Virginia.,3 Department of Periodontics, University of Texas Health Science Center at San Antonio , San Antonio, Texas
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69
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Ding Z, Qiao Y, Peng F, Xia C, Qian S, Wang T, Sun J, Liu X. Si-doped porous TiO2 coatings enhanced in vitro angiogenic behavior of human umbilical vein endothelial cells. Colloids Surf B Biointerfaces 2017; 159:493-500. [DOI: 10.1016/j.colsurfb.2017.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 07/30/2017] [Accepted: 08/03/2017] [Indexed: 01/16/2023]
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70
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Zhang X, Chen J, Pei X, Wang J, Wan Q, Jiang S, Huang C, Pei X. Enhanced Osseointegration of Porous Titanium Modified with Zeolitic Imidazolate Framework-8. ACS APPLIED MATERIALS & INTERFACES 2017; 9:25171-25183. [PMID: 28696091 DOI: 10.1021/acsami.7b07800] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Xin Zhang
- State
Key Laboratory of Oral Diseases, National Clinical Research
Center for Oral Diseases, §Department of Prosthodontics, West China Hospital of
Stomatology, ⊥Postanesthesia Care Unit, West China Hospital of Stomatology, and ∥College of Chemistry, Sichuan University, Chengdu 610000, P.R. China
| | - Junyu Chen
- State
Key Laboratory of Oral Diseases, National Clinical Research
Center for Oral Diseases, §Department of Prosthodontics, West China Hospital of
Stomatology, ⊥Postanesthesia Care Unit, West China Hospital of Stomatology, and ∥College of Chemistry, Sichuan University, Chengdu 610000, P.R. China
| | - Xiang Pei
- State
Key Laboratory of Oral Diseases, National Clinical Research
Center for Oral Diseases, §Department of Prosthodontics, West China Hospital of
Stomatology, ⊥Postanesthesia Care Unit, West China Hospital of Stomatology, and ∥College of Chemistry, Sichuan University, Chengdu 610000, P.R. China
| | - Jian Wang
- State
Key Laboratory of Oral Diseases, National Clinical Research
Center for Oral Diseases, §Department of Prosthodontics, West China Hospital of
Stomatology, ⊥Postanesthesia Care Unit, West China Hospital of Stomatology, and ∥College of Chemistry, Sichuan University, Chengdu 610000, P.R. China
| | - Qianbing Wan
- State
Key Laboratory of Oral Diseases, National Clinical Research
Center for Oral Diseases, §Department of Prosthodontics, West China Hospital of
Stomatology, ⊥Postanesthesia Care Unit, West China Hospital of Stomatology, and ∥College of Chemistry, Sichuan University, Chengdu 610000, P.R. China
| | - Shaokang Jiang
- State
Key Laboratory of Oral Diseases, National Clinical Research
Center for Oral Diseases, §Department of Prosthodontics, West China Hospital of
Stomatology, ⊥Postanesthesia Care Unit, West China Hospital of Stomatology, and ∥College of Chemistry, Sichuan University, Chengdu 610000, P.R. China
| | - Chao Huang
- State
Key Laboratory of Oral Diseases, National Clinical Research
Center for Oral Diseases, §Department of Prosthodontics, West China Hospital of
Stomatology, ⊥Postanesthesia Care Unit, West China Hospital of Stomatology, and ∥College of Chemistry, Sichuan University, Chengdu 610000, P.R. China
| | - Xibo Pei
- State
Key Laboratory of Oral Diseases, National Clinical Research
Center for Oral Diseases, §Department of Prosthodontics, West China Hospital of
Stomatology, ⊥Postanesthesia Care Unit, West China Hospital of Stomatology, and ∥College of Chemistry, Sichuan University, Chengdu 610000, P.R. China
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71
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Boyan BD, Cheng A, Olivares-Navarrete R, Schwartz Z. Implant Surface Design Regulates Mesenchymal Stem Cell Differentiation and Maturation. Adv Dent Res 2017; 28:10-7. [PMID: 26927483 DOI: 10.1177/0022034515624444] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Changes in dental implant materials, structural design, and surface properties can all affect biological response. While bulk properties are important for mechanical stability of the implant, surface design ultimately contributes to osseointegration. This article reviews the surface parameters of dental implant materials that contribute to improved cell response and osseointegration. In particular, we focus on how surface design affects mesenchymal cell response and differentiation into the osteoblast lineage. Surface roughness has been largely studied at the microscale, but recent studies have highlighted the importance of hierarchical micron/submicron/nanosurface roughness, as well as surface roughness in combination with surface wettability. Integrins are transmembrane receptors that recognize changes in the surface and mediate downstream signaling pathways. Specifically, the noncanonical Wnt5a pathway has been implicated in osteoblastic differentiation of cells on titanium implant surfaces. However, much remains to be elucidated. Only recently have studies been conducted on the differences in biological response to implants based on sex, age, and clinical factors; these all point toward differences that advocate for patient-specific implant design. Finally, challenges in implant surface characterization must be addressed to optimize and compare data across studies. An understanding of both the science and the biology of the materials is crucial for developing novel dental implant materials and surface modifications for improved osseointegration.
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Affiliation(s)
- B D Boyan
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, USA Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - A Cheng
- Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA Department of Biomedical Engineering, Peking University, Beijing, China
| | - R Olivares-Navarrete
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Z Schwartz
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia, USA University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
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72
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Cell Sheets of Co-cultured Endothelial Progenitor Cells and Mesenchymal Stromal Cells Promote Osseointegration in Irradiated Rat Bone. Sci Rep 2017; 7:3038. [PMID: 28596582 PMCID: PMC5465198 DOI: 10.1038/s41598-017-03366-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 04/27/2017] [Indexed: 12/12/2022] Open
Abstract
Irradiated bone has a greater risk of implant failure than nonirradiated bone. The purpose of this study was to investigate the influence of cell sheets composed of co-cultured bone marrow mesenchymal stromal cells (BMSCs) and endothelial progenitor cells (EPCs) on implant osseointegration in irradiated bone. Cell sheets (EPCs, BMSCs or co-cultured EPCs and BMSCs) were wrapped around titanium implants to make cell sheet-implant complexes. The co-cultured group showed the highest osteogenic differentiation potential in vitro, as indicated by the extracellular matrix mineralization and the expression of osteogenesis related genes at both mRNA and protein levels. The co-cultured cells promoted ectopic bone formation as indicated by micro-computed tomography (Micro-CT) and histological analysis. In the irradiated tibias of rats, implants of the co-cultured group showed enhanced osseointegration by Micro-CT evaluation and histological observation. Co-cultured EPCs and BMSCs also up-regulated the expression of osteogenesis related genes in bone fragments in close contact with implants. In conclusion, cell sheets of co-cultured EPCs and BMSCs could promote osseous healing around implants and are potentially useful to improve osseointegration process for patients after radiotherapy.
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73
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Chen Y, Gao A, Bai L, Wang Y, Wang X, Zhang X, Huang X, Hang R, Tang B, Chu PK. Antibacterial, osteogenic, and angiogenic activities of SrTiO 3 nanotubes embedded with Ag 2 O nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:1049-1058. [DOI: 10.1016/j.msec.2017.03.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 02/27/2017] [Accepted: 03/02/2017] [Indexed: 01/01/2023]
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74
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Shi B, Andrukhov O, Özdemir B, Shokoohi Tabrizi HA, Dard M, Rausch-Fan X. Effect of enamel matrix derivative on the angiogenic behaviors of human umbilical vein endothelial cells on different titanium surfaces. Dent Mater J 2017; 36:381-386. [PMID: 28566669 DOI: 10.4012/dmj.2016-212] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Angiogenesis play a crucial role in the regeneration of hard and soft tissue around dental titanium (Ti) implant. Enamel matrix derivative (EMD) promotes tissue regeneration and stimulates angiogenesis but its effect on the angiogenesis on Ti surfaces was never investigated. The effect of EMD on the angiogenic activity of endothelial cells cultured on pre-treated smooth Ti (PT), acidetched (A), coarse-grit blasted and acid-etched (SLA) surfaces and tissue culture plastic (TCP) in the presence or absence of EMD was investigated. EMD inhibited the proliferation/viability of human umbilical vein endothelial cells (HUVECs) growing on A and SLA Ti surfaces. EMD induced an increase in the expression of all these genes in HUVECs grown on SLA surface but not on other surfaces. Summarizing, our data show that EMD influences proliferation and expression of angiogenesis associated gene in HUVECs grown on moderately rough SLA surfaces, suggesting that EMD might promote angiogenesis following implantation.
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Affiliation(s)
- Bin Shi
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University.,Division of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna
| | - Oleh Andrukhov
- Division of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna
| | - Burcu Özdemir
- Division of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna.,Department of Periodontology, Faculty of Dentistry, Gazi University
| | | | | | - Xiaohui Rausch-Fan
- Division of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna
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75
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Hindy A, Farahmand F, Tabatabaei FS. In vitro biological outcome of laser application for modification or processing of titanium dental implants. Lasers Med Sci 2017; 32:1197-1206. [PMID: 28451816 DOI: 10.1007/s10103-017-2217-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 04/19/2017] [Indexed: 02/03/2023]
Abstract
There are numerous functions for laser in modern implant dentistry including surface treatment, surface coating, and implant manufacturing. As laser application may potentially improve osseointegration of dental implants, we systematically reviewed the literature for in vitro biological responses to laser-modified or processed titanium dental implants. The literature was searched in PubMed, ISI Web, and Scopus, using keywords "titanium dental implants," "laser," "biocompatibility," and their synonyms. After screening the 136 references obtained, 28 articles met the inclusion criteria. We found that Nd:YAG laser was the most commonly used lasers in the treatment or processing of titanium dental implants. Most of the experiments used cell attachment and cell proliferation to investigate bioresponses of the implants. The most commonly used cells in these assays were osteoblast-like cells. Only one study was conducted in stem cells. These in vitro studies reported higher biocompatibility in laser-modified titanium implants. It seems that laser radiation plays a vital role in cell response to dental implants; however, it is necessary to accomplish more studies using different laser types and parameters on various cells to offer a more conclusive result.
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Affiliation(s)
- Ahmed Hindy
- Department of Dental Biomaterials, School of Dentistry, Shahid Beheshti University of Medical Sciences, Evin, Tehran, 1983963113, Iran
| | - Farzam Farahmand
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
| | - Fahimeh Sadat Tabatabaei
- Department of Dental Biomaterials, School of Dentistry, Shahid Beheshti University of Medical Sciences, Evin, Tehran, 1983963113, Iran. .,Department of Tissue Engineering, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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76
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Civantos A, Martínez-Campos E, Ramos V, Elvira C, Gallardo A, Abarrategi A. Titanium Coatings and Surface Modifications: Toward Clinically Useful Bioactive Implants. ACS Biomater Sci Eng 2017; 3:1245-1261. [DOI: 10.1021/acsbiomaterials.6b00604] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Ana Civantos
- Tissue
Engineering Group, Institute of Biofunctional Studies, Associated
Unit to the Institute of Polymer Science and Technology (CSIC), Pharmacy
Faculty, Complutense University of Madrid (UCM), Paseo Juan XXIII 1, 28040 Madrid, Spain
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Enrique Martínez-Campos
- Tissue
Engineering Group, Institute of Biofunctional Studies, Associated
Unit to the Institute of Polymer Science and Technology (CSIC), Pharmacy
Faculty, Complutense University of Madrid (UCM), Paseo Juan XXIII 1, 28040 Madrid, Spain
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Viviana Ramos
- Tissue
Engineering Group, Institute of Biofunctional Studies, Associated
Unit to the Institute of Polymer Science and Technology (CSIC), Pharmacy
Faculty, Complutense University of Madrid (UCM), Paseo Juan XXIII 1, 28040 Madrid, Spain
- Noricum S.L., San Sebastián
de los Reyes, Av. Fuente Nueva, 14, 28703 Madrid, Spain
| | - Carlos Elvira
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Alberto Gallardo
- Polymer
Functionalization Group, Institute of Polymer Science and Technology, ICTP-CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Ander Abarrategi
- Haematopoietic
Stem Cell Laboratory, The Francis Crick Institute, 1 Midland
Road, NW1 1AT London, U.K
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77
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Moussa M, Banakh O, Wehrle-Haller B, Fontana P, Scherrer S, Cattani M, Wiskott A, Durual S. TiN x O y coatings facilitate the initial adhesion of osteoblasts to create a suitable environment for their proliferation and the recruitment of endothelial cells. ACTA ACUST UNITED AC 2017; 12:025001. [PMID: 28244429 DOI: 10.1088/1748-605x/aa57a7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Titanium-nitride-oxide coatings (TiN x O y ) improve osseointegration of endosseous implants. The exact mechanisms by which these effects are mediated are poorly understood except for an increase of osteoblast proliferation while a high degree of differentiation is maintained. One hypothesis holds that TiN x O y facilitates the initial spreading and adhesion of the osteoblasts. The aim of this work was to investigate the molecular mechanisms of osteoblast adhesion on TiN x O y as compared to microrough titanium SLA. A global view of the osseointegrative process, that is, taking into account other cell groups, especially endothelial cells, is also presented. To this aim, gene expression and focal adhesion analysis, cocultures and wound assays were performed early after seeding, from 6 h to 3 days. We demonstrated that TiN x O y coatings enhance osteoblast adhesion and spreading when compared to the standard microrough titanium. The integrin β1, either in association with α1 or with α2 plays a central role in these mechanisms. TiN x O y coatings optimize the process of osseointegration by acting at several levels, especially by upregulating osteoblast adhesion and proliferation, but also by supporting neovascularization and the development of a suitable inflammatory environment.
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Affiliation(s)
- M Moussa
- Division of fixed prosthodontics and biomaterials, University clinics of dental medicine, University of Geneva, Switzerland
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78
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Antibacterial ability and angiogenic activity of Cu-Ti-O nanotube arrays. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:93-99. [DOI: 10.1016/j.msec.2016.09.077] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 09/09/2016] [Accepted: 09/29/2016] [Indexed: 02/02/2023]
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79
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Salvi GE, Bosshardt DD, Lang NP, Abrahamsson I, Berglundh T, Lindhe J, Ivanovski S, Donos N. Temporal sequence of hard and soft tissue healing around titanium dental implants. Periodontol 2000 2017; 68:135-52. [PMID: 25867984 DOI: 10.1111/prd.12054] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2013] [Indexed: 12/22/2022]
Abstract
The objective of the present review was to summarize the evidence available on the temporal sequence of hard and soft tissue healing around titanium dental implants in animal models and in humans. A search was undertaken to find animal and human studies reporting on the temporal dynamics of hard and soft tissue integration of titanium dental implants. Moreover, the influence of implant surface roughness and chemistry on the molecular mechanisms associated with osseointegration was also investigated. The findings indicated that the integration of titanium dental implants into hard and soft tissue represents the result of a complex cascade of biological events initiated by the surgical intervention. Implant placement into alveolar bone induces a cascade of healing events starting with clot formation and continuing with the maturation of bone in contact with the implant surface. From a genetic point of view, osseointegration is associated with a decrease in inflammation and an increase in osteogenesis-, angiogenesis- and neurogenesis-associated gene expression during the early stages of wound healing. The attachment and maturation of the soft tissue complex (i.e. epithelium and connective tissue) to implants becomes established 6-8 weeks following surgery. Based on the findings of the present review it can be concluded that improved understanding of the mechanisms associated with osseointegration will provide leads and targets for strategies aimed at enhancing the clinical performance of titanium dental implants.
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80
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Tran PA, Fox K, Tran N. Novel hierarchical tantalum oxide-PDMS hybrid coating for medical implants: One pot synthesis, characterization and modulation of fibroblast proliferation. J Colloid Interface Sci 2017; 485:106-115. [PMID: 27662021 DOI: 10.1016/j.jcis.2016.06.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 06/20/2016] [Accepted: 06/20/2016] [Indexed: 10/25/2022]
Abstract
Surface properties such as morphology, roughness and charge density have a strong influence on the interaction of biomaterials and cells. Hierarchical materials with a combination of micron/submicron and nanoscale features for coating of medical implants could therefore have significant potential to modulate cellular responses and eventually improve the performance of the implants. In this study, we report a simple, one pot wet chemistry preparation of a hybrid coating system with hierarchical surface structures consisting of polydimethylsiloxane (PDMS) and tantalum oxide. Medical grade, amine functional PDMS was mixed with tantalum ethoxide which subsequently formed Ta2O5in situ through hydrolysis and condensation during coating process. The coatings were characterized by SEM, EDS, XPS, confocal scanning microscopy, contact angle measurement and in vitro cell culture. Varying PDMS and tantalum ethoxide ratios resulted in coatings of different surface textures ranging from smooth to submicro- and nano-structured. Strikingly, hierarchical surfaces containing both microscale (1-1.5μm) and nanoscale (86-163nm) particles were found on coatings synthesized with 20% and 40% (v/v) tantalum ethoxide. The coatings were similar in term of hydrophobicity but showed different surface roughness and chemical composition. Importantly, higher cell proliferation was observed on hybrid surface with hierarchical structures compared to pure PDMS or pure tantalum oxide. The coating process is simple, versatile, carried out under ambient condition and requires no special equipment.
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Affiliation(s)
- Phong A Tran
- Queensland University of Technology (QUT), Australia; Department of Chemical and Biomolecular Engineering, The Particulate Fluid Processing Centre, The University of Melbourne, Victoria 3010, Australia.
| | - Kate Fox
- School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia
| | - Nhiem Tran
- School of Science, RMIT University, Melbourne, Victoria 3000, Australia.
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81
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Alves SA, Ribeiro AR, Gemini-Piperni S, Silva RC, Saraiva AM, Leite PE, Perez G, Oliveira SM, Araujo JR, Archanjo BS, Rodrigues ME, Henriques M, Celis JP, Shokuhfar T, Borojevic R, Granjeiro JM, Rocha LA. TiO2nanotubes enriched with calcium, phosphorous and zinc: promising bio-selective functional surfaces for osseointegrated titanium implants. RSC Adv 2017. [DOI: 10.1039/c7ra08263k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
TiO2nanotubes enriched with Ca, P, and Zn by reverse polarization anodization, are promising bio-selective functional structures for osseointegrated titanium implants.
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82
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Andrukhov O, Huber R, Shi B, Berner S, Rausch-Fan X, Moritz A, Spencer ND, Schedle A. Proliferation, behavior, and differentiation of osteoblasts on surfaces of different microroughness. Dent Mater 2016; 32:1374-1384. [PMID: 27637551 DOI: 10.1016/j.dental.2016.08.217] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 08/16/2016] [Accepted: 08/16/2016] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Titanium surface roughness is recognized as an important parameter influencing osseointegration. However, studies concerning the effect of well-defined surface topographies of titanium surfaces on osteoblasts have been limited in scope. In the present study we have investigated how Ti surfaces of different micrometer-scale roughness influence proliferation, migration, and differentiation of osteoblasts in-vitro. METHODS Titanium replicas with surface roughnesses (Ra) of approximately 0, 1, 2, and 4μm were produced and MG-63 osteoblasts were cultured on these surfaces for up to 5 days. The effect of surface micrometer-scale roughness on proliferation, migration in time-lapse microscopy experiments, as well as the expression of alkaline phosphatase, osteocalcin, vascular-endothelial growth factor (VEGF), osteoprotegerin (OPG), and receptor activator of nuclear factor kappa-B ligand (RANKL) were investigated. RESULTS Proliferation of MG-63 cells was found to decrease gradually with increasing surface roughness. However, the highest expression of alkaline phosphatase, osteocalcin and VEGF was observed on surfaces with Ra values of approximately 1 and 2μm. Further increase in surface roughness resulted in decreased expression of all investigated parameters. The cell migration speed measured in time-lapse microscopy experiments was significantly lower on surfaces with a Ra value of about 4μm, compared to those with lower roughness. No significant effect of surface roughness on the expression of OPG and RANKL was observed. SIGNIFICANCE Thus, surfaces with intermediate Ra roughness values of 1-2μm seem to be optimal for osteoblast differentiation. Neither proliferation nor differentiation of osteoblasts appears to be supported by surfaces with higher or lower Ra values.
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Affiliation(s)
- Oleh Andrukhov
- Division of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Rebecca Huber
- Department of Materials, Laboratory for Surface Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Bin Shi
- Division of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna, Vienna, Austria; Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | | | - Xiaohui Rausch-Fan
- Division of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Andreas Moritz
- Division of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Nicholas D Spencer
- Department of Materials, Laboratory for Surface Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Andreas Schedle
- Division of Conservative Dentistry and Periodontology, School of Dentistry, Medical University of Vienna, Vienna, Austria.
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83
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Lotz EM, Olivares-Navarrete R, Berner S, Boyan BD, Schwartz Z. Osteogenic response of human MSCs and osteoblasts to hydrophilic and hydrophobic nanostructured titanium implant surfaces. J Biomed Mater Res A 2016; 104:3137-3148. [DOI: 10.1002/jbm.a.35852] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 07/11/2016] [Accepted: 07/29/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Ethan M. Lotz
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond Virginia 23284
| | - Rene Olivares-Navarrete
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond Virginia 23284
| | | | - Barbara D. Boyan
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond Virginia 23284
- Wallace H. Coulter Department of Biomedical Engineering; Georgia Institute of Technology; Atlanta Georgia 30332
| | - Zvi Schwartz
- Department of Biomedical Engineering; School of Engineering; Virginia Commonwealth University; Richmond Virginia 23284
- Department of Periodontics; University of Texas Health Science Center at San Antonio; San Antonio Texas 78229
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84
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Vitkov L, Hartl D, Hannig M. Is osseointegration inflammation-triggered? Med Hypotheses 2016; 93:1-4. [DOI: 10.1016/j.mehy.2016.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 05/04/2016] [Indexed: 12/29/2022]
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85
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Saghiri MA, Asatourian A, Garcia-Godoy F, Sheibani N. The role of angiogenesis in implant dentistry part I: Review of titanium alloys, surface characteristics and treatments. Med Oral Patol Oral Cir Bucal 2016; 21:e514-525. [PMID: 27031073 PMCID: PMC4920467 DOI: 10.4317/medoral.21199] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Accepted: 02/19/2016] [Indexed: 01/15/2023] Open
Abstract
Background Angiogenesis plays an important role in osseointegration process by contributing to inflammatory and regenerative phases of surrounding alveolar bone. The present review evaluated the effect of titanium alloys and their surface characteristics including: surface topography (macro, micro, and nano), surface wettability/energy, surface hydrophilicity or hydrophobicity, surface charge, and surface treatments of dental implants on angiogenesis events, which occur during osseointegration period. Material and Methods An electronic search was performed in PubMed, MEDLINE, and EMBASE databases via OVID using the keywords mentioned in the PubMed and MeSH headings regarding the role of angiogenesis in implant dentistry from January 2000-April 2014. Results Of the 2,691 articles identified in our initial search results, only 30 met the inclusion criteria set for this review. The hydrophilicity and topography of dental implants are the most important and effective surface characteristics in angiogenesis and osteogenesis processes. The surface treatments or modifications of dental implants are mainly directed through the enhancement of biological activity and functionalization in order to promote osteogenesis and angiogenesis, and accelerate the osseointegration procedure. Conclusions Angiogenesis is of great importance in implant dentistry in a manner that most of the surface characteristics and treatments of dental implants are directed toward creating a more pro-angiogenic surface on dental implants. A number of studies discussed the effect of titanium alloys, dental implant surface characteristic and treatments on agiogenesis process. However, clinical trials and in-vivo studies delineating the mechanisms of dental implants, and their surface characteristics or treatments, action in angiogenesis processes are lagging. Key words:Angiogenesis, dental implant, osseointergration.
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Affiliation(s)
- M-A Saghiri
- Departments of Ophthalmology, &Visual Sciences and Biomedical Engineering, University of Wisconsin, School of Medicine and Public health, Madison, WI, USA,
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86
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Impact of surface porosity and topography on the mechanical behavior of high strength biomedical polymers. J Mech Behav Biomed Mater 2016; 59:459-473. [DOI: 10.1016/j.jmbbm.2016.02.033] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 02/24/2016] [Accepted: 02/25/2016] [Indexed: 12/16/2022]
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87
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de Jesus RNR, Stavropoulos A, Oliveira MTF, Soares PBF, Moura CCG, Zanetta-Barbosa D. Histomorphometric evaluation of a dual acid-etched vs. a chemically modified hydrophilic dual acid-etched implant surface. An experimental study in dogs. Clin Oral Implants Res 2016; 28:551-557. [PMID: 27006317 DOI: 10.1111/clr.12833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2016] [Indexed: 01/06/2023]
Abstract
OBJECTIVE The aim of this preclinical in vivo study was to compare histologically and histomorphometrically osseointegration of dual acid-etched vs. hydrophilic implants. MATERIAL AND METHODS Two pairs of implants (Neodent, Curitiba, Brazil), with same macrogeometry but different surface technology (i) dual acid-etched surface (SAE) treatment with hydrochloric and sulfuric acid followed by microwave treatment and insertion in isotonic saline solution to increase hydrophilicity (SAE-HD) (test, n = 12); (ii) dual SAE (control, n = 12) were installed bilaterally in the proximal tibia of six beagle dogs. Histologic and histomorphometric evaluation was performed after 2 and 4 weeks in vivo, on non-decalcified sections. Percentages of bone-to-implant contact (BIC) and bone density (BD) were estimated and tested for significant differences with the Wilcoxon signed-rank test for paired samples (P < 0.05). RESULTS In general, new bone formation along and in contact with the implant surface could be observed irrespective of the experimental group and observation period. Most of the bone was woven but small quantities of lamellar bone, mainly in close proximity to the cortex could also be observed. BIC at 2 weeks was 19.57 ± 13.57 and 20.33 ± 7.99 (P = 0.75), and at 4 weeks was 42.80 ± 14.48 and 40.25 ± 9.45 (P = 0.65) for SAE-HD and SAE implants respectively. BD at 2 weeks was 24.85 ± 16.31 and 25.66 ± 8.59 (P = 0.35) and at 4 weeks 44.13 ± 6.46 and 40.13 ± 6.46 (P = 0.25) for SAE-HD and SAE implants respectively. CONCLUSION Bone-to-implant contact and BD increased with time in both SAE-HD and SAE implants. No significant differences were observed between the two different implant surfaces for any of the evaluated parameters and at any observation time-point.
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Affiliation(s)
| | - Andreas Stavropoulos
- Department of Periodontology, Faculty of Odontology, Malmö University, Malmö, Sweden
| | - Maiolino Thomaz Fonseca Oliveira
- Department of Oral and Maxillofacial Surgery and Implantology, School of Dentistry, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Priscilla Barbosa Ferreira Soares
- Department of Oral and Maxillofacial Surgery and Implantology, School of Dentistry, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | | | - Darceny Zanetta-Barbosa
- Department of Oral and Maxillofacial Surgery and Implantology, School of Dentistry, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
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88
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Zhang W, Cao H, Zhang X, Li G, Chang Q, Zhao J, Qiao Y, Ding X, Yang G, Liu X, Jiang X. A strontium-incorporated nanoporous titanium implant surface for rapid osseointegration. NANOSCALE 2016; 8:5291-5301. [PMID: 26881868 DOI: 10.1039/c5nr08580b] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Rapid osseointegration of dental implants will shorten the period of treatment and enhance the comfort of patients. Due to the vital role of angiogenesis played during bone development and regeneration, it might be feasible to promote rapid osseointegration by modifying the implant surface to gain a combined angiogenesis/osteogenesis inducing capacity. In this study, a novel coating (MAO-Sr) with strontium-incorporated nanoporous structures on titanium implants was generated via a new micro-arc oxidation, in an attempt to induce angiogenesis and osteogenesis to enhance rapid osseointegration. In vitro, the nanoporous structure significantly enhanced the initial adhesion of canine BMSCs. More importantly, sustained release of strontium ions also displayed a stronger effect on the BMSCs in facilitating their osteogenic differentiation and promoting the angiogenic growth factor secretion to recruit endothelial cells and promote blood vessel formation. Advanced mechanism analyses indicated that MAPK/Erk and PI3K/Akt signaling pathways were involved in these effects of the MAO-Sr coating. Finally, in the canine dental implantation study, the MAO-Sr coating induced faster bone formation within the initial six weeks and the osseointegration effect was comparable to that of the commercially available ITI implants. These results suggest that the MAO-Sr coating has the potential for future use in dental implants.
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Affiliation(s)
- Wenjie Zhang
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.
| | - Huiliang Cao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, China.
| | - Xiaochen Zhang
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.
| | - Guanglong Li
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.
| | - Qing Chang
- Shanghai Institute of Digestive Surgery and Department of Surgery, Rui Jin Hospital, Shanghai Jiao Tong University, School of Medicine, 197 Ruijin Road II, Shanghai 200025, China
| | - Jun Zhao
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.
| | - Yuqin Qiao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, China.
| | - Xun Ding
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.
| | - Guangzheng Yang
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, China.
| | - Xinquan Jiang
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.
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89
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Tan AW, Liau LL, Chua KH, Ahmad R, Akbar SA, Pingguan-Murphy B. Enhanced in vitro angiogenic behaviour of human umbilical vein endothelial cells on thermally oxidized TiO2 nanofibrous surfaces. Sci Rep 2016; 6:21828. [PMID: 26883761 PMCID: PMC4756327 DOI: 10.1038/srep21828] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 02/02/2016] [Indexed: 02/08/2023] Open
Abstract
One of the major challenges in bone grafting is the lack of sufficient bone vascularization. A rapid and stable bone vascularization at an early stage of implantation is essential for optimal functioning of the bone graft. To address this, the ability of in situ TiO2 nanofibrous surfaces fabricated via thermal oxidation method to enhance the angiogenic potential of human umbilical vein endothelial cells (HUVECs) was investigated. The cellular responses of HUVECs on TiO2 nanofibrous surfaces were studied through cell adhesion, cell proliferation, capillary-like tube formation, growth factors secretion (VEGF and BFGF), and angiogenic-endogenic-associated gene (VEGF, VEGFR2, BFGF, PGF, HGF, Ang-1, VWF, PECAM-1 and ENOS) expression analysis after 2 weeks of cell seeding. Our results show that TiO2 nanofibrous surfaces significantly enhanced adhesion, proliferation, formation of capillary-like tube networks and growth factors secretion of HUVECs, as well as leading to higher expression level of all angiogenic-endogenic-associated genes, in comparison to unmodified control surfaces. These beneficial effects suggest the potential use of such surface nanostructures to be utilized as an advantageous interface for bone grafts as they can promote angiogenesis, which improves bone vascularization.
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Affiliation(s)
- Ai Wen Tan
- Department of Biomedical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Ling Ling Liau
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, 50300 Kuala Lumpur, Malaysia
| | - Kien Hui Chua
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, 50300 Kuala Lumpur, Malaysia
| | - Roslina Ahmad
- Department of Mechanical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Sheikh Ali Akbar
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
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90
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Bai L, Wu R, Wang Y, Wang X, Zhang X, Huang X, Qin L, Hang R, Zhao L, Tang B. Osteogenic and angiogenic activities of silicon-incorporated TiO2 nanotube arrays. J Mater Chem B 2016; 4:5548-5559. [DOI: 10.1039/c6tb01109h] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Silicon-doped TiO2 nanotube arrays may promote implant osseointegration through upregulating osteoblast and endothelial cell functions.
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Affiliation(s)
- Long Bai
- Research Institute of Surface Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Ruifeng Wu
- Department of Orthopedics
- Central Hospital of Tongchuan Mining Bureau
- Tongchuan
- China
| | - Yueyue Wang
- Research Institute of Surface Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Xin Wang
- Research Institute of Surface Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Xiangyu Zhang
- Research Institute of Surface Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Xiaobo Huang
- Research Institute of Surface Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Lin Qin
- Research Institute of Surface Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Ruiqiang Hang
- Research Institute of Surface Engineering
- Taiyuan University of Technology
- Taiyuan
- China
| | - Lingzhou Zhao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Oral Diseases
- Department of Periodontology
- School of Stomatology
- The Fourth Military Medical University
- Xi'an
| | - Bin Tang
- Research Institute of Surface Engineering
- Taiyuan University of Technology
- Taiyuan
- China
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91
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Godoy-Gallardo M, Guillem-Marti J, Sevilla P, Manero JM, Gil FJ, Rodriguez D. Anhydride-functional silane immobilized onto titanium surfaces induces osteoblast cell differentiation and reduces bacterial adhesion and biofilm formation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 59:524-532. [PMID: 26652404 DOI: 10.1016/j.msec.2015.10.051] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/15/2015] [Accepted: 10/15/2015] [Indexed: 11/27/2022]
Abstract
Bacterial infection in dental implants along with osseointegration failure usually leads to loss of the device. Bioactive molecules with antibacterial properties can be attached to titanium surfaces with anchoring molecules such as silanes, preventing biofilm formation and improving osseointegration. Properties of silanes as molecular binders have been thoroughly studied, but research on the biological effects of these coatings is scarce. The aim of the present study was to determine the in vitro cell response and antibacterial effects of triethoxysilypropyl succinic anhydride (TESPSA) silane anchored on titanium surfaces. X-ray photoelectron spectroscopy confirmed a successful silanization. The silanized surfaces showed no cytotoxic effects. Gene expression analyses of Sarcoma Osteogenic (SaOS-2) osteoblast-like cells cultured on TESPSA silanized surfaces reported a remarkable increase of biochemical markers related to induction of osteoblastic cell differentiation. A manifest decrease of bacterial adhesion and biofilm formation at early stages was observed on treated substrates, while favoring cell adhesion and spreading in bacteria-cell co-cultures. Surfaces treated with TESPSA could enhance a biological sealing on implant surfaces against bacteria colonization of underlying tissues. Furthermore, it can be an effective anchoring platform of biomolecules on titanium surfaces with improved osteoblastic differentiation and antibacterial properties.
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Affiliation(s)
- Maria Godoy-Gallardo
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), ETSEIB, Av. Diagonal 647, 08028 Barcelona, Spain; Centre for Research in NanoEngineering (CRNE) - UPC, C/ Pascual i Vila 15, 08028 Barcelona, Spain.
| | - Jordi Guillem-Marti
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), ETSEIB, Av. Diagonal 647, 08028 Barcelona, Spain; Centre for Research in NanoEngineering (CRNE) - UPC, C/ Pascual i Vila 15, 08028 Barcelona, Spain.
| | - Pablo Sevilla
- Department of Mechanics, Escola Universitària Salesiana de Sarrià (EUSS), C/ Passeig de Sant Bosco, 42, 08017 Barcelona, Spain.
| | - José M Manero
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), ETSEIB, Av. Diagonal 647, 08028 Barcelona, Spain; Centre for Research in NanoEngineering (CRNE) - UPC, C/ Pascual i Vila 15, 08028 Barcelona, Spain.
| | - Francisco J Gil
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), ETSEIB, Av. Diagonal 647, 08028 Barcelona, Spain; Centre for Research in NanoEngineering (CRNE) - UPC, C/ Pascual i Vila 15, 08028 Barcelona, Spain.
| | - Daniel Rodriguez
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgy, Technical University of Catalonia (UPC), ETSEIB, Av. Diagonal 647, 08028 Barcelona, Spain; Centre for Research in NanoEngineering (CRNE) - UPC, C/ Pascual i Vila 15, 08028 Barcelona, Spain.
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92
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Saghiri MA, Orangi J, Asatourian A, Sorenson CM, Sheibani N. Functional role of inorganic trace elements in angiogenesis part III: (Ti, Li, Ce, As, Hg, Va, Nb and Pb). Crit Rev Oncol Hematol 2015; 98:290-301. [PMID: 26638864 DOI: 10.1016/j.critrevonc.2015.10.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 08/27/2015] [Accepted: 10/15/2015] [Indexed: 02/02/2023] Open
Abstract
Many essential elements exist in nature with significant influence on human health. Angiogenesis is vital in developmental, repair, and regenerative processes, and its aberrant regulation contributes to pathogenesis of many diseases including cancer. Thus, it is of great importance to explore the role of these elements in such a vital process. This is third in a series of reviews that serve as an overview of the role of inorganic elements in regulation of angiogenesis and vascular function. Here we will review the roles of titanium, lithium, cerium, arsenic, mercury, vanadium, niobium, and lead in these processes. The roles of other inorganic elements in angiogenesis were discussed in part I (N, Fe, Se, P, Au, and Ca) and part II (Cr, Si, Zn, Cu, and S) of these series. The methods of exposure, structure, mechanisms, and potential activities of these elements are briefly discussed. An electronic search was performed on the role of these elements in angiogenesis from January 2005 to April 2014. These elements can promote and/or inhibit angiogenesis through different mechanisms. The anti-angiogenic effect of titanium dioxide nanoparticles comes from the inhibition of angiogenic processes, and not from its toxicity. Lithium affects vasculogenesis but not angiogenesis. Nanoceria treatment inhibited tumor growth by inhibiting angiogenesis. Vanadium treatment inhibited cell proliferation and induced cytotoxic effects through interactions with DNA. The negative impact of mercury on endothelial cell migration and tube formation activities was dose and time dependent. Lead induced IL-8 production, which is known to promote tumor angiogenesis. Thus, understanding the impact of these elements on angiogenesis will help in development of new modalities to modulate angiogenesis under various conditions.
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Affiliation(s)
- Mohammad Ali Saghiri
- Departments of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Department of Biomedical Engineering, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Angiogenesis and Regenerative Group, Dr. H. Afsar Lajevardi Research Cluster, Shiraz, Iran.
| | - Jafar Orangi
- Angiogenesis and Regenerative Group, Dr. H. Afsar Lajevardi Research Cluster, Shiraz, Iran
| | - Armen Asatourian
- Angiogenesis and Regenerative Group, Dr. H. Afsar Lajevardi Research Cluster, Shiraz, Iran
| | - Christine M Sorenson
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Nader Sheibani
- Departments of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Department of Biomedical Engineering, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
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93
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Ungureanu C, Dumitriu C, Popescu S, Enculescu M, Tofan V, Popescu M, Pirvu C. Enhancing antimicrobial activity of TiO2/Ti by torularhodin bioinspired surface modification. Bioelectrochemistry 2015; 107:14-24. [PMID: 26414412 DOI: 10.1016/j.bioelechem.2015.09.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 09/14/2015] [Accepted: 09/14/2015] [Indexed: 01/06/2023]
Abstract
Implant-associated infections are a major cause of morbidity and mortality. This study was performed using titanium samples coated by anodization with a titanium dioxide (TiO2) shielded nanotube layer. TiO2/Ti surface was modified by simple immersion in torularhodin solution and by using a mussel-inspired method based on polydopamine as bio adhesive for torularhodin immobilization. SEM analysis revealed tubular microstructures of torularhodin and the PDA ability to function as a catchy anchor between torularhodin and TiO2 surface. Corrosion resistance was associated with TiO2 barrier oxide layer and nano-organized oxide layer and the torularhodin surface modification does not bring significant changes in resistance of the oxide layer. Our results demonstrated that the torularhodin modified TiO2/Ti surface could effectively prevent adhesion and proliferation of Escherichia coli, Staphylococcus aureus, Enterococcus faecalis, Bacillus subtilis, and Pseudomonas aeruginosa. The new modified titanium surface showed good biocompatibility and well-behaved haemocompatibility. This biomaterial with enhanced antimicrobial activity holds great potential for future biomedical applications.
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Affiliation(s)
- Camelia Ungureanu
- University Politehnica of Bucharest, 313 Splaiul Independentei, Sector 6, Bucharest 060042, Romania
| | - Cristina Dumitriu
- University Politehnica of Bucharest, 313 Splaiul Independentei, Sector 6, Bucharest 060042, Romania
| | - Simona Popescu
- University Politehnica of Bucharest, 313 Splaiul Independentei, Sector 6, Bucharest 060042, Romania
| | - Monica Enculescu
- National Institute of Materials Physics, Atomistilor 105 bis, P.O. Box MG-7, Magurele, Bucharest 77125, Romania
| | - Vlad Tofan
- "Cantacuzino" National Institute of Research-Development for Microbiology and Immunology, 103 Splaiul Independentei, Sector 5, Bucharest 050096, Romania
| | - Marian Popescu
- National Institute for Research and Development in Microtechnologies, 126A, Erou Iancu Nicolae Street, Bucharest 077190, Romania
| | - Cristian Pirvu
- University Politehnica of Bucharest, 313 Splaiul Independentei, Sector 6, Bucharest 060042, Romania.
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94
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Cheng M, Qiao Y, Wang Q, Jin G, Qin H, Zhao Y, Peng X, Zhang X, Liu X. Calcium Plasma Implanted Titanium Surface with Hierarchical Microstructure for Improving the Bone Formation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13053-13061. [PMID: 26020570 DOI: 10.1021/acsami.5b03209] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Introducing hierarchical microstructure and bioactive trace elements simultaneously onto the surface of titanium implant is a very effective way to improve the osseointegration between bone and implant. In this work, hierarchical topography was prepared on Ti surface via acid etching and sandblasting (SLA) to form micropits and microcavities then underwent Ca plasma immersion ion implantation (Ca-PIII) process. The surface wettability and roughness did not change obviously before and after Ca-PIII process. The in vitro evaluations including cell adhesion, activity, alkaline phosphatase (ALP), osteogenic genes (Runx2, OSX, ALP, BSP, Col1a1, OPN, and OC), and protein (BSP, Col1a1, OPN, and OC) expressions revealed that the introduction of Ca ions onto the surface of SLA-treated Ti can promote greater osteoblasts adhesion, spread and proliferation, which in return further accelerated the maturation and mineralization of osteoblasts. More importantly, in vivo evaluations including Micro-CT evaluation, histological observations, push-out test, sequential fluorescent labeling and histological observations verified that Ca-SLA-treated Ti implants could efficiently promote new bone formation in early times. These promising results suggest that Ca-SLA-treated Ti has the potential for future application in orthopedic field.
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Affiliation(s)
- Mengqi Cheng
- †Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Yuqin Qiao
- ‡State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Qi Wang
- †Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Guodong Jin
- ‡State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Hui Qin
- †Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Yaochao Zhao
- †Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Xiaochun Peng
- †Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Xianlong Zhang
- †Department of Orthopedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Xuanyong Liu
- ‡State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
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95
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Regulation of Osteoblast Differentiation by Acid-Etched and/or Grit-Blasted Titanium Substrate Topography Is Enhanced by 1,25(OH)2D3 in a Sex-Dependent Manner. BIOMED RESEARCH INTERNATIONAL 2015; 2015:365014. [PMID: 25945332 PMCID: PMC4402479 DOI: 10.1155/2015/365014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 09/14/2014] [Indexed: 12/30/2022]
Abstract
This study assessed contributions of micron-scale topography on clinically relevant titanium (Ti) to differentiation of osteoprogenitor cells and osteoblasts; the interaction of this effect with 1α,25-dihydroxyvitamin D3 (1α,25(OH)2D3); and if the effects are sex-dependent. Male and female rat bone marrow cells (BMCs) were cultured on acid-etched (A, Ra = 0.87 μm), grit-blasted (GB, Ra = 3.90 μm), or grit-blasted/acid-etched (SLA, Ra = 3.22 μm) Ti. BMCs were sensitive to surface topography and underwent osteoblast differentiation. This was greatest on SLA; acid etching and grit blasting contributed additively. Primary osteoblasts were also sensitive to SLA, with less effect from individual structural components, demonstrated by enhanced local factor production. Sex-dependent responses of BMCs to topography varied with parameter whereas male and female osteoblasts responded similarly to surface treatment. 1α,25(OH)2D3 enhanced cell responses on all surfaces similarly. Effects were sex-dependent and male cells grown on a complex microstructured surface were much more sensitive than female cells. These results indicate that effects of the complex SLA topography are greater than acid etching or grit blasting alone on multipotent BMCs and committed osteoblasts and that individual parameters are sex-specific. The effect of 1α,25(OH)2D3 was sex dependent. The results also suggest that levels of 1α,25(OH)2D3 in the patient may be important in osseointegration.
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96
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Shanbhag S, Shanbhag V, Stavropoulos A. Genomic analyses of early peri-implant bone healing in humans: a systematic review. Int J Implant Dent 2015; 1:5. [PMID: 27747627 PMCID: PMC5005705 DOI: 10.1186/s40729-015-0006-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/27/2015] [Indexed: 01/22/2023] Open
Abstract
Objective The objective of the study was to systematically review the literature for studies reporting gene expression analyses (GEA) of the biological processes involved in early human peri-implant bone healing. Methods Electronic databases (MEDLINE, EMBASE) were searched in duplicate. Controlled and uncontrolled studies reporting GEA of human peri-implant tissues - including ≥5 patients and ≥2 time points - during the first 4 weeks of healing were eligible for inclusion. Methodological quality and risk of bias were also assessed. Results Four exploratory studies were included in reporting GEA of either tissues attached to SLA or SLActive implants after 4 to 14 days or cells attached to TiOBlast or Osseospeed implants after 3 to 7 days. A total of 111 implants from 43 patients were analyzed using validated array methods; however, considerable heterogeneity and risk of bias were detected. A consistent overall pattern of gene expression was observed; genes representing an immuno-inflammatory response were overexpressed at days 3 to 4, followed by genes representing osteogenic processes at day 7. Genes representing bone remodeling, angiogenesis, and neurogenesis were expressed concomitantly with osteogenesis. Several regulators of these processes, such as cytokines, growth factors, transcription factors, and signaling pathways, were identified. Implant surface properties seemed to influence the healing processes at various stages via differential gene expression. Conclusion Limited evidence from gene expression studies in humans indicates that osteogenic processes commence within the first post-operative week and they appear influenced at various stages by implant surface properties.
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Affiliation(s)
- Siddharth Shanbhag
- Department of Periodontology, Faculty of Odontology, Malmö University, Carl Gustafs väg 34, 214 21, Malmö, Sweden.,Centre for Oral Rehabilitation & Implant Dentistry, 1 Laxmi Niwas, 87 Bajaj Road, Vile Parle West, Mumbai, 400056, India
| | - Vivek Shanbhag
- Centre for Oral Rehabilitation & Implant Dentistry, 1 Laxmi Niwas, 87 Bajaj Road, Vile Parle West, Mumbai, 400056, India
| | - Andreas Stavropoulos
- Department of Periodontology, Faculty of Odontology, Malmö University, Carl Gustafs väg 34, 214 21, Malmö, Sweden.
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97
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Olivares-Navarrete R, Rodil SE, Hyzy SL, Dunn GR, Almaguer-Flores A, Schwartz Z, Boyan BD. Role of integrin subunits in mesenchymal stem cell differentiation and osteoblast maturation on graphitic carbon-coated microstructured surfaces. Biomaterials 2015; 51:69-79. [PMID: 25770999 DOI: 10.1016/j.biomaterials.2015.01.035] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 12/26/2014] [Accepted: 01/20/2015] [Indexed: 12/20/2022]
Abstract
Surface roughness, topography, chemistry, and energy promote osteoblast differentiation and increase osteogenic local factor production in vitro and bone-to-implant contact in vivo, but the mechanisms involved are not well understood. Knockdown of integrin heterodimer alpha2beta1 (α2β1) blocks the osteogenic effects of the surface, suggesting signaling by this integrin homodimer is required. The purpose of the present study was to separate effects of surface chemistry and surface structure on integrin expression by coating smooth or rough titanium (Ti) substrates with graphitic carbon, retaining surface morphology but altering surface chemistry. Ti surfaces (smooth [Ra < 0.4 μm], rough [Ra ≥ 3.4 μm]) were sputter-coated using a magnetron sputtering system with an ultrapure graphite target, producing a graphitic carbon thin film. Human mesenchymal stem cells and MG63 osteoblast-like cells had higher mRNA for integrin subunits α1, α2, αv, and β1 on rough surfaces in comparison to smooth, and integrin αv on graphitic-carbon-coated rough surfaces in comparison to Ti. Osteogenic differentiation was greater on rough surfaces in comparison to smooth, regardless of chemistry. Silencing integrins β1, α1, or α2 decreased osteoblast maturation on rough surfaces independent of surface chemistry. Silencing integrin αv decreased maturation only on graphitic carbon-coated surfaces, not on Ti. These results suggest a major role of the integrin β1 subunit in roughness recognition, and that integrin alpha subunits play a major role in surface chemistry recognition.
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Affiliation(s)
- Rene Olivares-Navarrete
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Sandra E Rodil
- Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mexico, Mexico City, Mexico
| | - Sharon L Hyzy
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Ginger R Dunn
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | | | - Zvi Schwartz
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Barbara D Boyan
- Department of Biomedical Engineering, School of Engineering, Virginia Commonwealth University, Richmond, VA, USA; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
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98
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Deng Y, Liu X, Xu A, Wang L, Luo Z, Zheng Y, Deng F, Wei J, Tang Z, Wei S. Effect of surface roughness on osteogenesis in vitro and osseointegration in vivo of carbon fiber-reinforced polyetheretherketone-nanohydroxyapatite composite. Int J Nanomedicine 2015; 10:1425-47. [PMID: 25733834 PMCID: PMC4337592 DOI: 10.2147/ijn.s75557] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
As United States Food and Drug Administration-approved implantable material, carbon fiber-reinforced polyetheretherketone (CFRPEEK) possesses an adjustable elastic modulus similar to cortical bone and is a prime candidate to replace surgical metallic implants. The bioinertness and inferior osteogenic properties of CFRPEEK, however, limit its clinical application as orthopedic/dental implants. In this study, CFRPEEK–nanohydroxyapatite ternary composites (PEEK/n-HA/CF) with variable surface roughness have been successfully fabricated. The effect of surface roughness on their in vitro cellular responses of osteoblast-like MG-63 cells (attachment, proliferation, apoptosis, and differentiation) and in vivo osseointegration is evaluated. The results show that the hydrophilicity and the amount of Ca ions on the surface are significantly improved as the surface roughness of composite increases. In cell culture tests, the results reveal that the cell proliferation rate and the extent of osteogenic differentiation of cells are a function of the size of surface roughness. The composite with moderate surface roughness significantly increases cell attachment/proliferation and promotes the production of alkaline phosphatase (ALP) activity and calcium nodule formation compared with the other groups. More importantly, the PEEK/n-HA/CF implant with appropriate surface roughness exhibits remarkably enhanced bioactivity and osseointegration in vivo in the animal experiment. These findings will provide critical guidance for the design of CFRPEEK-based implants with optimal roughness to regulate cellular behaviors, and to enhance biocompability and osseointegration. Meanwhile, the PEEK/n-HA/CF ternary composite with optimal surface roughness might hold great potential as bioactive biomaterial for bone grafting and tissue engineering applications.
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Affiliation(s)
- Yi Deng
- 2nd Dental Center, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University, Beijing, People's Republic of China ; Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, People's Republic of China
| | - Xiaochen Liu
- Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, People's Republic of China
| | - Anxiu Xu
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Beijing, People's Republic of China
| | - Lixin Wang
- Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Zuyuan Luo
- Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, People's Republic of China
| | - Yunfei Zheng
- 2nd Dental Center, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University, Beijing, People's Republic of China
| | - Feng Deng
- Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Beijing, People's Republic of China
| | - Jie Wei
- Key Laboratory for Ultrafine Materials of Ministry of Education, and Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai, People's Republic of China
| | - Zhihui Tang
- 2nd Dental Center, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University, Beijing, People's Republic of China
| | - Shicheng Wei
- 2nd Dental Center, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University, Beijing, People's Republic of China ; Center for Biomedical Materials and Tissue Engineering, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, People's Republic of China ; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Medical University, Beijing, People's Republic of China
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99
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Cellular responses evoked by different surface characteristics of intraosseous titanium implants. BIOMED RESEARCH INTERNATIONAL 2015; 2015:171945. [PMID: 25767803 PMCID: PMC4341860 DOI: 10.1155/2015/171945] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 01/29/2015] [Indexed: 11/17/2022]
Abstract
The properties of biomaterials, including their surface microstructural topography and their surface chemistry or surface energy/wettability, affect cellular responses such as cell adhesion, proliferation, and migration. The nanotopography of moderately rough implant surfaces enhances the production of biological mediators in the peri-implant microenvironment with consequent recruitment of differentiating osteogenic cells to the implant surface and stimulates osteogenic maturation. Implant surfaces with moderately rough topography and with high surface energy promote osteogenesis, increase the ratio of bone-to-implant contact, and increase the bonding strength of the bone to the implant at the interface. Certain features of implant surface chemistry are also important in enhancing peri-implant bone wound healing. It is the purpose of this paper to review some of the more important features of titanium implant surfaces which have an impact on osseointegration.
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100
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Zhou R, Wei D, Cao J, Feng W, Cheng S, Du Q, Li B, Wang Y, Jia D, Zhou Y. Conformal coating containing Ca, P, Si and Na with double-level porous surface structure on titanium formed by a three-step microarc oxidation. RSC Adv 2015. [DOI: 10.1039/c4ra14685a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Development of conformal MAO coating on a Ti plate with a double-level porous surface, followed by characterization and evaluation in SBF.
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Affiliation(s)
- Rui Zhou
- Department of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Daqing Wei
- Department of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Jianyun Cao
- Department of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Wei Feng
- Department of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Su Cheng
- School of Architecture and Civil Engineering
- Harbin University of Science and Technology
- Harbin
- P. R. China
| | - Qing Du
- Department of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Baoqiang Li
- Department of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Yaming Wang
- Department of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Dechang Jia
- Department of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
| | - Yu Zhou
- Department of Materials Science and Engineering
- Harbin Institute of Technology
- Harbin
- P. R. China
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