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Salamanca E, Wu YF, Aung LM, Chiu BR, Chen MK, Chang WJ, Sun YS. Allylamine coating on zirconia dental implant surface promotes osteogenic differentiation in vitro and accelerates osseointegration in vivo. Clin Oral Implants Res 2024. [PMID: 38804531 DOI: 10.1111/clr.14300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 04/19/2024] [Accepted: 05/14/2024] [Indexed: 05/29/2024]
Abstract
OBJECTIVES The glow discharge plasma (GDP) procedure has proven efficacy in grafting allylamine onto zirconia dental implant surfaces to enhance osseointegration. This study explored the enhancement of zirconia dental implant properties using GDP at different energy settings (25, 50, 75, 100, and 200 W) both in vitro and in vivo. MATERIALS AND METHODS In vitro analyses included scanning electron microscopy, wettability assessment, energy-dispersive X-ray spectroscopy, and more. In vivo experiments involved implanting zirconia dental implants into rabbit femurs and later evaluation through impact stability test, micro-CT, and histomorphometric measurements. RESULTS The results demonstrated that 25 and 50 W GDP allylamine grafting positively impacted MG-63 cell proliferation and increased alkaline phosphatase activity. Gene expression analysis revealed upregulation of OCN, OPG, and COL-I. Both 25 and 50 W GDP allylamine grafting significantly improved zirconia's surface properties (p < .05, p < .01, p < .001). However, only 25 W allylamine grafting with optimal energy settings promoted in vivo osseointegration and new bone formation while preventing bone level loss around the dental implant (p < .05, p < .01, p < .001). CONCLUSIONS This study presents a promising method for enhancing Zr dental implant surface's bioactivity.
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Affiliation(s)
- Eisner Salamanca
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yi-Fan Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Biomedical Engineering, Ming-Chuan University, Taoyuan, Taiwan
| | - Lwin Moe Aung
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Bor Rong Chiu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Mei Kuang Chen
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
| | - Wei-Jen Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
- Dental Department, Taipei Medical University, Shuang-Ho Hospital, Taipei, Taiwan
| | - Ying Sui Sun
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
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Wang Z, Wang J, Wu R, Wei J. Construction of functional surfaces for dental implants to enhance osseointegration. Front Bioeng Biotechnol 2023; 11:1320307. [PMID: 38033823 PMCID: PMC10682203 DOI: 10.3389/fbioe.2023.1320307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Dental implants have been extensively used in patients with defects or loss of dentition. However, the loss or failure of dental implants is still a critical problem in clinic. Therefore, many methods have been designed to enhance the osseointegration between the implants and native bone. Herein, the challenge and healing process of dental implant operation will be briefly introduced. Then, various surface modification methods and emerging biomaterials used to tune the properties of dental implants will be summarized comprehensively.
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Affiliation(s)
- Zhenshi Wang
- School of Stomatology, Nanchang University, Nanchang, China
- Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang, China
- Jiangxi Province Clinical Research Center for Oral Disease, Nanchang, China
| | - Jiaolong Wang
- School of Stomatology, Nanchang University, Nanchang, China
- Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang, China
- Jiangxi Province Clinical Research Center for Oral Disease, Nanchang, China
- College of Chemistry and Chemical Engineering, Nanchang University, Nanchang, China
| | - Runfa Wu
- School of Stomatology, Nanchang University, Nanchang, China
- Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang, China
- Jiangxi Province Clinical Research Center for Oral Disease, Nanchang, China
| | - Junchao Wei
- School of Stomatology, Nanchang University, Nanchang, China
- Jiangxi Province Key Laboratory of Oral Biomedicine, Nanchang, China
- Jiangxi Province Clinical Research Center for Oral Disease, Nanchang, China
- College of Chemistry and Chemical Engineering, Nanchang University, Nanchang, China
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Kim H, Lee YH, Kim NK, Kang IK. Bioactive Surface of Zirconia Implant Prepared by Nano-Hydroxyapatite and Type I Collagen. COATINGS 2022; 12:1335. [DOI: 10.3390/coatings12091335] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Zirconia, with its excellent mechanical strength and esthetics, has a growing potential for applications in dentistry and orthopedics. However, in order for zirconia to have a high affinity with bone tissue, the bioactivity of the surface must be further increased. In order to increase the bioactivity of zirconia, research was conducted to make a porous support or to fill the porous structure with nano-hydroxyapatite (nHA). In this case, there is a risk that physically filled nHA could be released depending on the living environment. In this study, nHA and type I collagen were introduced to the zirconia surface by chemical covalent bonding to increase bioactivity and ensure safety in the body. The chemical reaction of the surface was confirmed by X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM) and Fourier transform infrared (FT-IR) spectroscopy. In addition, the biological activity was evaluated by examining the cytotoxicity and bone formation ability of the modified zirconia using osteoblasts. As a result, it was found that the bioactivity of the zirconia surface was greatly improved by immobilizing nHA and type I collagen.
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Liu CF, Chang KC, Sun YS, Nguyen DT, Huang HH. Combining Sandblasting, Alkaline Etching, and Collagen Immobilization to Promote Cell Growth on Biomedical Titanium Implants. Polymers (Basel) 2021; 13:polym13152550. [PMID: 34372152 PMCID: PMC8347351 DOI: 10.3390/polym13152550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 11/16/2022] Open
Abstract
Our objective in this study was to promote the growth of bone cells on biomedical titanium (Ti) implant surfaces via surface modification involving sandblasting, alkaline etching, and type I collagen immobilization using the natural cross-linker genipin. The resulting surface was characterized in terms topography, roughness, wettability, and functional groups, respectively using field emission scanning electron microscopy, 3D profilometry, and attenuated total reflection-Fourier transform infrared spectroscopy. We then evaluated the adhesion, proliferation, initial differentiation, and mineralization of human bone marrow mesenchymal stem cells (hMSCs). Results show that sandblasting treatment greatly enhanced surface roughness to promote cell adhesion and proliferation and that the immobilization of type I collagen using genipin enhanced initial cell differentiation as well as mineralization in the extracellular matrix of hMSCs. Interestingly, the nano/submicro-scale pore network and/or hydrophilic features on sandblasted rough Ti surfaces were insufficient to promote cell growth. However, the combination of all proposed surface treatments produced ideal surface characteristics suited to Ti implant applications.
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Affiliation(s)
- Chia-Fei Liu
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (C.-F.L.); (D.T.N.)
| | - Kai-Chun Chang
- Institute of Oral Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
| | - Ying-Sui Sun
- School of Dental Technology, Taipei Medical University, Taipei 110, Taiwan;
| | - Diem Thuy Nguyen
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (C.-F.L.); (D.T.N.)
| | - Her-Hsiung Huang
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (C.-F.L.); (D.T.N.)
- Institute of Oral Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung 413, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Department of Stomatology, Taipei Veterans General Hospital, Taipei 112, Taiwan
- Department of Education and Research, Taipei City Hospital, Taipei 103, Taiwan
- Correspondence: ; Tel.: +886-2-28267068
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Sun M, Shao H, Xu H, Yang X, Dong M, Gong J, Yu M, Gou Z, He Y, Liu A, Wang H. Biodegradable intramedullary nail (BIN) with high-strength bioceramics for bone fracture. J Mater Chem B 2021; 9:969-982. [PMID: 33406205 DOI: 10.1039/d0tb02423f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
About 10 million fractures occur worldwide each year, of which more than 60% are long bone fractures. It is generally agreed that intramedullary nails have significant advantages in rigid fracture fixation. Metal intramedullary nails (INs) can provide strong support but a stress shielding effect can occur that results in nonunion healing in clinic. Nondegradable metals also need to be removed by a second operation. Could INs be biodegradable and used to overcome this issue? As current degradable biomaterials always suffer from low strength and cannot be used in Ins, herein, we report a novel device consisting of biodegradable IN (BIN) made for the first time with bioceramics. These BINs have an extremely high bending strength and stable internal and external structure. Experiments show that the BINs could not only fix and support the tibial fracture model, but also promote osteogenesis and affect the microenvironment of the bone marrow cavity. Therefore, they could be expected to replace traditional metal IN and become a more effective treatment option for tibial fractures.
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Affiliation(s)
- Miao Sun
- The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, Zhejiang 310006, China.
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Kazi GAS, Yamagiwa R. Cytotoxicity and biocompatibility of high mol% yttria containing zirconia. Restor Dent Endod 2020; 45:e52. [PMID: 33294417 PMCID: PMC7691258 DOI: 10.5395/rde.2020.45.e52] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 11/24/2022] Open
Abstract
Objectives Yttria-stabilized tetragonal phase zirconia has been used as a dental restorative material for over a decade. While it is still the strongest and toughest ceramic, its translucency remains as a significant drawback. To overcome this, stabilizing the translucency zirconia to a significant cubic crystalline phase by increasing the yttria content to more than 8 mol% (8YTZP). However, the biocompatibility of a high amount of yttria is still an important topic that needs to be investigated. Materials and Methods Commercially available 8YTZP plates were used. To enhance cell adhesion, proliferation, and differentiation, the surface of the 8YTZP is sequentially polished with a SiC-coated abrasive paper and surface coating with type I collagen. Fibroblast-like cells L929 used for cell adherence and cell proliferation analysis, and mouse bone marrow-derived mesenchymal stem cells (BMSC) used for cell differentiation analysis. Results The results revealed that all samples, regardless of the surface treatment, are hydrophilic and showed a strong affinity for water. Even the cell culture results indicate that simple surface polishing and coating can affect cellular behavior by enhancing cell adhesion and proliferation. Both L929 cells and BMSC were nicely adhered to and proliferated in all conditions. Conclusions The results demonstrate the biocompatibility of the cubic phase zirconia with 8 mol% yttria and suggest that yttria with a higher zirconia content are not toxic to the cells, support a strong adhesion of cells on their surfaces, and promote cell proliferation and differentiation. All these confirm its potential use in tissue engineering.
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Affiliation(s)
- Gulsan Ara Sathi Kazi
- Department of Biosystems Engineering, Graduate School of Science and Technology, Yamagata University, Yamagata, Japan
| | - Ryo Yamagiwa
- Department of Biosystems Engineering, Graduate School of Science and Technology, Yamagata University, Yamagata, Japan
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Denry I, Dawson DV, Holloway JA. Crystalline phase evolution and thermal behavior of zirconia-lanthanum aluminate ceramics produced by surface modification. J Biomed Mater Res B Appl Biomater 2020; 109:328-337. [PMID: 32815316 DOI: 10.1002/jbm.b.34702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/04/2020] [Indexed: 11/12/2022]
Abstract
The purpose of the present work was to investigate the effect doping with lanthanum aluminate on the phase assemblage and thermal behavior of zirconia ceramics for biomedical applications. Four compositions were prepared by a surface modification route of either conventional tetragonal zirconia (3Y-TZP) or high translucency cubic-based zirconia (5Y-PSZ) to reach a nominal composition of either 0.5 wt. % (3Y-0.5LAO and 5Y-0.5LAO) or 5 wt. % of lanthanum monoaluminate (3Y-5LAO and 5Y-5LAO). Undoped powders were used as controls. DTA and XRD analyses revealed that lanthanum dizirconate crystallized in the 934°C-936°C range, while lanthanum aluminate crystallized in the 1,056°C-1,063°C range in both types of zirconias doped at the 5% level. No second phase was found in compositions doped at the 0.5% level. The a lattice parameter and the amount of the cubic phase increased in both 3Y-5LAO and 5Y-5LAO. The microstructure of the compositions doped with 5% LAO was characterized by well distributed LAO twinned crystals and sparse needle-shaped lanthanum hexaaluminate crystals. A bimodal grain size distribution was observed in 5Y-doped compositions. This was attributed to abnormal grain growth of the cubic phase, and in line with aluminum segregation at grain boundaries and the presence of second-phase LAO crystals.
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Affiliation(s)
- Isabelle Denry
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, Iowa, USA.,Department of Prosthodontics, University of Iowa College of Dentistry, Iowa City, Iowa, USA
| | - Deborah V Dawson
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, Iowa, USA.,Department of Biostatistics, University of Iowa College of Public Health, Iowa City, Iowa, USA
| | - Julie A Holloway
- Department of Prosthodontics, University of Iowa College of Dentistry, Iowa City, Iowa, USA
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Yang Z, Liu M, Yang Y, Zheng M, Yang Y, Liu X, Tan J. Biofunctionalization of zirconia with cell-adhesion peptides via polydopamine crosslinking for soft tissue engineering: effects on the biological behaviors of human gingival fibroblasts and oral bacteria. RSC Adv 2020; 10:6200-6212. [PMID: 35495985 PMCID: PMC9049673 DOI: 10.1039/c9ra08575k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 01/09/2020] [Indexed: 12/28/2022] Open
Abstract
Rapid soft tissue integration is essential for long-term dental implant success. Zirconia is increasingly used as an abutment material owing to its excellent aesthetic properties and biocompatibility; however, it is bioinert, and tissue integration is poor. We developed a feasible surface modification method, exploiting the reactivity of polydopamine (PDA) films to immobilize cell-adhesion peptides (Arg-Gly-Asp, RGD) onto zirconia abutment surfaces. Further, we evaluated the effect thereof on human gingival fibroblast (HGF) behavior and oral bacterial adhesion, which influence the peri-implant soft tissue seal. HGF responses to linear KGGRGDSP and cyclic RGDfK sequences were compared. PDA deposition and covalent coupling of RGD were verified by X-ray photoelectron spectroscopy and fluorescence microscopy. The biological behaviors of HGFs on the modified zirconia; i.e., adhesion, spreading, proliferation, gene and protein expression, were elucidated. Biofunctionalization of zirconia with the adhesion peptides significantly enhanced the biological activities of HGFs. Cyclic RGD induced slightly improved cell attachment, spreading, and proliferation, but similar cell differentiation when compared to linear RGD peptides. To assess their antimicrobial properties, the different substrates were exposed to cultures of the early colonizer Streptococcus mutans or the periodontal pathogen Porphyromonas gingivalis, and bacterial adhesion was evaluated by scanning electron microscopy and live/dead staining. PDA and PDA-RGD coatings decreased zirconia surface colonization by both bacterial species to similar extents. Thus, PDA-RGD-functionalized zirconia modulates specific HGF responses, while maintaining the antimicrobial activity of the PDA coating. The selective bio-interaction pattern of this surface modification holds great promise for improving soft-tissue integration around zirconia abutments in clinical applications. Biofunctionalization of zirconia with cell-adhesion peptides via polydopamine and its effect on HGFs/bacterial adhesion for enhanced soft tissue seal.![]()
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Affiliation(s)
- Zhen Yang
- Department of Prosthodontics
- Peking University School and Hospital of Stomatology
- National Clinical Research Center for Oral Diseases
- National Engineering Laboratory for Digital and Material Technology of Stomatology
- Beijing Key Laboratory of Digital Stomatology
| | - Mingyue Liu
- First Clinical Division
- Peking University School and Hospital of Stomatology
- Beijing
- P. R. China
| | - Yang Yang
- Department of Prosthodontics
- Peking University School and Hospital of Stomatology
- National Clinical Research Center for Oral Diseases
- National Engineering Laboratory for Digital and Material Technology of Stomatology
- Beijing Key Laboratory of Digital Stomatology
| | - Miao Zheng
- Department of Stomatology
- Peking University Third Hospital
- Beijing
- P. R. China
| | - Yang Yang
- Department of Prosthodontics
- Peking University School and Hospital of Stomatology
- National Clinical Research Center for Oral Diseases
- National Engineering Laboratory for Digital and Material Technology of Stomatology
- Beijing Key Laboratory of Digital Stomatology
| | - Xiaoqiang Liu
- Department of Prosthodontics
- Peking University School and Hospital of Stomatology
- National Clinical Research Center for Oral Diseases
- National Engineering Laboratory for Digital and Material Technology of Stomatology
- Beijing Key Laboratory of Digital Stomatology
| | - Jianguo Tan
- Department of Prosthodontics
- Peking University School and Hospital of Stomatology
- National Clinical Research Center for Oral Diseases
- National Engineering Laboratory for Digital and Material Technology of Stomatology
- Beijing Key Laboratory of Digital Stomatology
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