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Rabel K, Nath AJ, Nold J, Spies BC, Wesemann C, Altmann B, Adolfsson E, Witkowski S, Tomakidi P, Steinberg T. Analysis of soft tissue integration-supportive cell functions in gingival fibroblasts cultured on 3D printed biomaterials for oral implant-supported prostheses. J Biomed Mater Res A 2024; 112:1376-1387. [PMID: 38251807 DOI: 10.1002/jbm.a.37675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/20/2023] [Accepted: 01/08/2024] [Indexed: 01/23/2024]
Abstract
To date, it is unknown whether 3D printed fixed oral implant-supported prostheses can achieve comparable soft tissue integration (STI) to clinically established subtractively manufactured counterparts. STI is mediated among others by gingival fibroblasts (GFs) and is modulated by biomaterial surface characteristics. Therefore, the aim of the present work was to investigate the GF response of a 3D printed methacrylate photopolymer and a hybrid ceramic-filled methacrylate photopolymer for fixed implant-supported prostheses in the sense of supporting an STI. Subtractively manufactured samples made from methacrylate polymer and hybrid ceramic were evaluated for comparison and samples from yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP), comprising well documented biocompatibility, served as control. Surface topography was analyzed by scanning electron microscopy and interferometry, elemental composition by energy-dispersive x-ray spectroscopy, and wettability by contact angle measurement. The response of GFs obtained from five donors was examined in terms of membrane integrity, adhesion, morphogenesis, metabolic activity, and proliferation behavior by a lactate-dehydrogenase assay, fluorescent staining, a resazurin-based assay, and DNA quantification. The results revealed all surfaces were smooth and hydrophilic. GF adhesion, metabolic activity and proliferation were impaired by 3D printed biomaterials compared to subtractively manufactured comparison surfaces and the 3Y-TZP control, whereas membrane integrity was comparable. Within the limits of the present investigation, it was concluded that subtractively manufactured surfaces are superior compared to 3D printed surfaces to support STI. For the development of biologically optimized 3D printable biomaterials, consecutive studies will focus on the improvement of cytocompatibility and the synthesis of STI-relevant extracellular matrix constituents.
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Affiliation(s)
- Kerstin Rabel
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Amélie Joséphine Nath
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Oral Biotechnology, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Julian Nold
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Benedikt C Spies
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christian Wesemann
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Brigitte Altmann
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- G.E.R.N Research Center for Tissue Replacement, Regeneration and Neogenesis, Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Erik Adolfsson
- Division Materials and Production-RISE Research Institutes of Sweden, Mölndal, Sweden
| | - Siegbert Witkowski
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Pascal Tomakidi
- Department of Oral Biotechnology, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Thorsten Steinberg
- Department of Oral Biotechnology, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Saberian E, Jenča A, Seyfaddini R, Jenča A, Zare-Zardini H, Petrášová A, Jenčová J. Comparative Analysis of Osteoblastic Responses to Titanium and Alumina-Toughened Zirconia Implants: An In Vitro Study. Biomolecules 2024; 14:719. [PMID: 38927122 PMCID: PMC11201529 DOI: 10.3390/biom14060719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/09/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
INTRODUCTION Osteoblastic responses play a crucial role in the success of oral implants. Enhanced proliferation of osteoblast cells is associated with reduced cell mortality and an increase in bone regeneration. This study aims to evaluate the osteoblastic responses following oral implantation. MATERIALS AND METHODS Osteoblast stem cells were harvested and subsequently cultivated using cell culture techniques. The osteoblastic phenotype of the extracted cells was confirmed by examining the extracellular matrix. Cell morphogenesis on functionalized biomaterial surfaces was assessed through indirect immunofluorescence staining. The cellular response was investigated in the presence of two types of implant materials: titanium (Ti) and alumina-toughened zirconia (ATZ). Cell viability and apoptosis were quantitatively assessed using MTT assays and flow cytometry, respectively. RESULTS The survival of osteoblastic lineage cells was moderately reduced post-implantation. Viability in the Ti implant group remained at approximately 86%, while in the ATZ group, it was observed at 75%, which is considered acceptable. Moreover, there was a significant disparity in cell survival between the two implant groups (p < 0.05). Analysis of apoptosis levels at various concentrations revealed that the rate of apoptosis was 3.6% in the control group and 18.5% in the ATZ group, indicating that apoptosis or programmed cell death in the ATZ-treated group had increased nearly four-fold (p < 0.05). CONCLUSIONS The findings of this study indicate a reduction in osteoblastic cell line survival following implant treatment, with titanium implants exhibiting superior performance in terms of cell survival. However, it was also noted that the incidence of apoptosis in osteoblast cells was significantly higher in the presence of zirconium-based implants.
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Affiliation(s)
- Elham Saberian
- Faculty of Medicine, Klinika of Stomatology and Maxillofacial Surgery Akadémia Košice Bacikova, Pavol Jozef Šafárik University, 040 01 Kosice, Slovakia
| | - Andrej Jenča
- Klinika of Stomatology and Maxillofacial Surgery Akadémia Košice Bacikova, UPJS LF, 040 01 Kosice, Slovakia (A.J.)
| | - Rahman Seyfaddini
- Faculty of Medicine, Pavol Jozef Šafárik University, 040 11 Kosice, Slovakia
| | - Andrej Jenča
- Klinika of Stomatology and Maxillofacial Surgery Akadémia Košice Bacikova, UPJS LF, 040 01 Kosice, Slovakia (A.J.)
| | - Hadi Zare-Zardini
- Department of Biomedical Engineering, Meybod University, Meybod 89616-99557, Iran
| | - Adriána Petrášová
- Klinika of Stomatology and Maxillofacial Surgery Akadémia Košice Bacikova, UPJS LF, 040 01 Kosice, Slovakia (A.J.)
| | - Janka Jenčová
- Klinika of Stomatology and Maxillofacial Surgery Akadémia Košice Bacikova, UPJS LF, 040 01 Kosice, Slovakia (A.J.)
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Li J, Fu L, Lu Q, Guo S, Chen S, Xia T, Wang M, Chen L, Bai Y, Xia H. Comparison of the osteogenic potential of fibroblasts from different sources. Tissue Cell 2024; 88:102358. [PMID: 38537379 DOI: 10.1016/j.tice.2024.102358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/28/2024] [Accepted: 03/11/2024] [Indexed: 06/17/2024]
Abstract
OBJECTIVE With the growing interest in the role of fibroblasts in osteogenesis, this study presents a comparative evaluation of the osteogenic potential of fibroblasts derived from three distinct sources: human gingival fibroblasts (HGFs), mouse embryonic fibroblasts (NIH3T3 cells), and mouse subcutaneous fibroblasts (L929 cells). MC3T3-E1 pre-osteoblast cells were employed as a positive control for osteogenic behavior. DESIGN Our assessment involved multiple approaches, including vimentin staining for cell origin verification, as well as ALP and ARS staining in conjunction with RT-PCR for osteogenic characterization. RESULTS Our findings revealed the superior osteogenic differentiation capacity of HGFs compared to MC3T3-E1 and NIH3T3 cells. Analysis of ALP staining confirmed that early osteogenic differentiation was most prominent in MC3T3-E1 cells at 7 days, followed by NIH3T3 and HGFs. However, ARS staining at 21 days demonstrated that HGFs produced the highest number of calcified nodules, indicating their robust potential for late-stage mineralization. This late-stage osteogenic potential of HGFs was further validated through RT-PCR analysis. In contrast, L929 cells displayed no significant osteogenic differentiation potential. CONCLUSIONS In light of these findings, HGFs emerge as the preferred choice for seed cells in bone tissue engineering applications. This study provides valuable insights into the potential utility of HGFs in the fields of bone tissue engineering and regenerative medicine.
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Affiliation(s)
- Jiaojiao Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Liangliang Fu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Qian Lu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Shuling Guo
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Si Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Ting Xia
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Min Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Liangwen Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Yi Bai
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
| | - Haibin Xia
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China.
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Rabel K, Blankenburg A, Steinberg T, Kohal RJ, Spies BC, Adolfsson E, Witkowski S, Altmann B. Gingival fibroblast response to (hybrid) ceramic implant reconstruction surfaces is modulated by biomaterial type and surface treatment. Dent Mater 2024; 40:689-699. [PMID: 38395737 DOI: 10.1016/j.dental.2024.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/11/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024]
Abstract
OBJECTIVES Surface characteristics of implant reconstructions determine the gingival fibroblast (GF) response and thus soft tissue integration (STI). However, for monolithic implant reconstructions it is unknown whether the (hybrid) ceramic biomaterial type and its surface treatment affect GF response. Therefore, this investigation examined the influence of the implant reconstruction biomaterials hybrid ceramic (HC), lithium disilicate ceramic (LS), 4 and 5 mol% yttria partially stabilized zirconiumdioxide ceramics (4/5Y-PSZ) and their surface treatment - machining, polishing or glazing - on surface characteristics and GF response. METHODS After characterization of surface topography and wettability by scanning electron microscopy, interferometry and contact angle measurement, the adhesion, morphology, metabolic activity and proliferation of GFs from six donors was investigated by fluorescent staining and a resazurin-based assay at days 1, 3 and 7. Titanium (Ti) served as control. RESULTS Biomaterial type and surface treatment affected the GF response in a topography-dependent manner. Smooth polished and glazed surfaces demonstrated enhanced GF adhesion and earlier proliferation onset compared to rough machined surfaces. Due to minor differences in surface topography of polished and glazed surfaces, however, the GF response was similar for polished and glazed HC, LS, 4- and 5Y-PSZ as well as Ti. SIGNIFICANCE Within the limits of the present investigation, polishing and glazing of machined HC, LS and 4/5Y-PSZ can be recommended to support STI-relevant cell functions in GF. Since the GF response on polished and glazed HC, LS, 4- and 5Y-PSZ surfaces and the Ti control was comparable, this investigation proofed equal cytocompatibility of these surfaces in vitro.
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Affiliation(s)
- Kerstin Rabel
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center ‑ University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany.
| | - Andrea Blankenburg
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center ‑ University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany
| | - Thorsten Steinberg
- Department of Oral Biotechnology, Center for Dental Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany
| | - Ralf J Kohal
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center ‑ University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany
| | - Benedikt C Spies
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center ‑ University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany
| | - Erik Adolfsson
- Division Materials and Production, RISE Research Institutes of Sweden, Argongatan 30, 43153 Mölndal, Sweden
| | - Siegbert Witkowski
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center ‑ University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany
| | - Brigitte Altmann
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center ‑ University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany; G.E.R.N Research Center for Tissue Replacement, Regeneration & Neogenesis, Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center ‑ University of Freiburg, Faculty of Medicine, University of Freiburg, Engesserstr. 4, 79108 Freiburg, Germany
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Schafer S, Swain T, Parra M, Slavin BV, Mirsky NA, Nayak VV, Witek L, Coelho PG. Nonthermal Atmospheric Pressure Plasma Treatment of Endosteal Implants for Osseointegration and Antimicrobial Efficacy: A Comprehensive Review. Bioengineering (Basel) 2024; 11:320. [PMID: 38671741 PMCID: PMC11048570 DOI: 10.3390/bioengineering11040320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/18/2024] [Accepted: 03/22/2024] [Indexed: 04/28/2024] Open
Abstract
The energy state of endosteal implants is dependent on the material, manufacturing technique, cleaning procedure, sterilization method, and surgical manipulation. An implant surface carrying a positive charge renders hydrophilic properties, thereby facilitating the absorption of vital plasma proteins crucial for osteogenic interactions. Techniques to control the surface charge involve processes like oxidation, chemical and topographical adjustments as well as the application of nonthermal plasma (NTP) treatment. NTP at atmospheric pressure and at room temperature can induce chemical and/or physical reactions that enhance wettability through surface energy changes. NTP has thus been used to modify the oxide layer of endosteal implants that interface with adjacent tissue cells and proteins. Results have indicated that if applied prior to implantation, NTP strengthens the interaction with surrounding hard tissue structures during the critical phases of early healing, thereby promoting rapid bone formation. Also, during this time period, NTP has been found to result in enhanced biomechanical fixation. As such, the application of NTP may serve as a practical and reliable method to improve healing outcomes. This review aims to provide an in-depth exploration of the parameters to be considered in the application of NTP on endosteal implants. In addition, the short- and long-term effects of NTP on osseointegration are addressed, as well as recent advances in the utilization of NTP in the treatment of periodontal disease.
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Affiliation(s)
- Sogand Schafer
- Division of Plastic, Reconstructive and Oral Surgery, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Tina Swain
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Marcelo Parra
- Center of Excellence in Morphological and Surgical Studies (CEMyQ), Faculty of Medicine, Universidad de la Frontera, Temuco 4811230, Chile
- Department of Comprehensive Adult Dentistry, Faculty of Dentistry, Universidad de la Frontera, Temuco 4811230, Chile
| | - Blaire V. Slavin
- University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | | | - Vasudev Vivekanand Nayak
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Lukasz Witek
- Biomaterials Division, New York University Dentistry, New York, NY 10010, USA
- Department of Biomedical Engineering, New York University Tandon School of Engineering, Brooklyn, NY 11201, USA
- Hansjörg Wyss Department of Plastic Surgery, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Paulo G. Coelho
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
- DeWitt Daughtry Family Department of Surgery, Division of Plastic Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA
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Safavi MS, Khalil-Allafi J, Restivo E, Ghalandarzadeh A, Hosseini M, Dacarro G, Malavasi L, Milella A, Listorti A, Visai L. Enhanced in vitro immersion behavior and antibacterial activity of NiTi orthopedic biomaterial by HAp-Nb 2O 5 composite deposits. Sci Rep 2023; 13:16045. [PMID: 37749260 PMCID: PMC10520115 DOI: 10.1038/s41598-023-43393-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023] Open
Abstract
NiTi is a class of metallic biomaterials, benefit from superelastic behavior, high biocompatibility, and favorable mechanical properties close to that of bone. However, the Ni ion leaching, poor bioactivity, and antibacterial activity limit its clinical applications. In this study, HAp-Nb2O5 composite layers were PC electrodeposited from aqueous electrolytes containing different concentrations of the Nb2O5 particles, i.e., 0-1 g/L, to evaluate the influence of the applied surface engineering strategy on in vitro immersion behavior, Ni2+ ion leaching level, and antibacterial activity of the bare NiTi. Surface characteristics of the electrodeposited layers were analyzed using SEM, TEM, XPS, and AFM. The immersion behavior of the samples was comprehensively investigated through SBF and long-term PBS soaking. Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) infective reference bacteria were employed to address the antibacterial activity of the samples. The results illustrated that the included particles led to more compact and smoother layers. Unlike bare NiTi, composite layers stimulated apatite formation upon immersion in both SBF and PBS media. The concentration of the released Ni2+ ion from the composite layer, containing 0.50 g/L Nb2O5 was ≈ 60% less than that of bare NiTi within 30 days of immersion in the corrosive PBS solution. The Nb2O5-reinforced layers exhibited high anti-adhesive activity against both types of pathogenic bacteria. The hybrid metallic-ceramic system comprising HAp-Nb2O5-coated NiTi offers the prospect of a potential solution for clinical challenges facing the orthopedic application of NiTi.
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Affiliation(s)
- Mir Saman Safavi
- Research Center for Advanced Materials, Faculty of Materials Engineering, Sahand University of Technology, P.O. Box: 51335-1996, Tabriz, Iran.
- Molecular Medicine Department (DMM), Center for Health Technologies (CHT), UdR INSTM, University of Pavia, Viale Taramelli 3/B, 27100, Pavia, Italy.
| | - Jafar Khalil-Allafi
- Research Center for Advanced Materials, Faculty of Materials Engineering, Sahand University of Technology, P.O. Box: 51335-1996, Tabriz, Iran.
| | - Elisa Restivo
- Molecular Medicine Department (DMM), Center for Health Technologies (CHT), UdR INSTM, University of Pavia, Viale Taramelli 3/B, 27100, Pavia, Italy
- Medicina Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS, 27100, Pavia, Italy
| | - Arash Ghalandarzadeh
- School of Metallurgy and Materials Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Milad Hosseini
- Research Center for Advanced Materials, Faculty of Materials Engineering, Sahand University of Technology, P.O. Box: 51335-1996, Tabriz, Iran
| | - Giacomo Dacarro
- Department of Chemistry, Physical Chemistry section, and CHT, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Lorenzo Malavasi
- Department of Chemistry and INSTM, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Antonella Milella
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70125, Bari, Italy
| | - Andrea Listorti
- Department of Chemistry, University of Bari Aldo Moro, Via Orabona 4, 70125, Bari, Italy
| | - Livia Visai
- Molecular Medicine Department (DMM), Center for Health Technologies (CHT), UdR INSTM, University of Pavia, Viale Taramelli 3/B, 27100, Pavia, Italy.
- Medicina Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS, 27100, Pavia, Italy.
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Nitti P, Narayanan A, Pellegrino R, Villani S, Madaghiele M, Demitri C. Cell-Tissue Interaction: The Biomimetic Approach to Design Tissue Engineered Biomaterials. Bioengineering (Basel) 2023; 10:1122. [PMID: 37892852 PMCID: PMC10604880 DOI: 10.3390/bioengineering10101122] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
The advancement achieved in Tissue Engineering is based on a careful and in-depth study of cell-tissue interactions. The choice of a specific biomaterial in Tissue Engineering is fundamental, as it represents an interface for adherent cells in the creation of a microenvironment suitable for cell growth and differentiation. The knowledge of the biochemical and biophysical properties of the extracellular matrix is a useful tool for the optimization of polymeric scaffolds. This review aims to analyse the chemical, physical, and biological parameters on which are possible to act in Tissue Engineering for the optimization of polymeric scaffolds and the most recent progress presented in this field, including the novelty in the modification of the scaffolds' bulk and surface from a chemical and physical point of view to improve cell-biomaterial interaction. Moreover, we underline how understanding the impact of scaffolds on cell fate is of paramount importance for the successful advancement of Tissue Engineering. Finally, we conclude by reporting the future perspectives in this field in continuous development.
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Affiliation(s)
- Paola Nitti
- Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy; (A.N.); (R.P.); (S.V.); (M.M.); (C.D.)
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8
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Zhang Y, Rémy M, Apartsin E, Prouvé E, Feuillie C, Labrugère C, Cam N, Durrieu MC. Controlling differentiation of stem cells via bioactive disordered cues. Biomater Sci 2023; 11:6116-6134. [PMID: 37602410 DOI: 10.1039/d3bm00605k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Ideal bone tissue engineering is to induce bone regeneration through the synergistic integration of biomaterial scaffolds, bone progenitor cells, and bone-forming factors. Biomimetic scaffolds imitate the native extracellular matrix (ECM) and are often utilized in vitro as analogues of the natural ECM to facilitate investigations of cell-ECM interactions and processes. In vivo, the cellular microenvironment has a crucial impact on regulating cell behavior and functions. A PET surface was activated and then functionalized with mimetic peptides to promote human mesenchymal stem cell (hMSC) adhesion and differentiation into an osteogenic lineage. Spray technology was used to randomly micropattern peptides (RGD and BMP-2 mimetic peptides) on the PET surface. The distribution of the peptides grafted on the surface, the roughness of the surfaces and the chemistry of the surfaces in each step of the treatment were ascertained by atomic force microscopy, fluorescence microscopy, time-of-flight secondary ion mass spectrometry, Toluidine Blue O assay, and X-ray photoelectron spectroscopy. Subsequently, cell lineage differentiation was evaluated by quantifying the expression of immunofluorescence markers: osteoblast markers (Runx-2, OPN) and osteocyte markers (E11, DMP1, and SOST). In this article, we hypothesized that a unique combination of bioactive micro/nanopatterns on a polymer surface improves the rate of morphology change and enhances hMSC differentiation. In DMEM, after 14 days, disordered micropatterned surfaces with RGD and BMP-2 led to a higher osteoblast marker expression than surfaces with a homogeneous dual peptide conjugation. Finally, hMSCs cultured in osteogenic differentiation medium (ODM) showed accelerated cell differentiation. In ODM, our results highlighted the expression of osteocyte markers when hMSCs were seeded on PET surfaces with random micropatterns.
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Affiliation(s)
- Yujie Zhang
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, F-33600 Pessac, France.
| | - Murielle Rémy
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, F-33600 Pessac, France.
| | - Evgeny Apartsin
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, F-33600 Pessac, France.
| | - Emilie Prouvé
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, F-33600 Pessac, France.
| | - Cécile Feuillie
- Univ. Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, F-33600 Pessac, France.
| | | | - Nithavong Cam
- Univ. Bordeaux, CNRS, PLACAMAT, UAR 3626, F-33600 Pessac, France
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Maillet C, Klein FM, Le Bras F, Velard F, Guillaume C, Gangloff SC, Gelle MP. Cytocompatibility of titanium and poly(etheretherketone) surfaces after O2 non-thermal plasma sterilization. PLoS One 2023; 18:e0290820. [PMID: 37647324 PMCID: PMC10468041 DOI: 10.1371/journal.pone.0290820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 08/16/2023] [Indexed: 09/01/2023] Open
Abstract
The sterilization of medical devices is paramount to achieve an acceptable level of sterility assurance and to prevent hospital-acquired infections. However, some medical devices cannot be sterilized by usual processes such as autoclave (AC) and gamma-ray irradiation (GI). A new non-thermal plasma (NTP) process using sealed bag that preserves the sterile state of the devices could be used as an alternative sterilization method. The aim of the study was to assess the cytocompatibility of titanium and poly(etheretherketone) (PEEK) surfaces after O2-NTP sterilization compared to GI and AC. MG-63 osteoblast-like cells were seeded on titanium (TA6V) and PEEK disks sterilized by AC, GI and O2-NTP. The cells' viability and proliferation, determined by WST-1 and DNA quantification respectively, were enhanced whatever the material types from 3 to 10 days. When seeded on titanium, MG-63 cells showed a higher viability and proliferation after GI and O2-NTP treatment compared to AC treatment. When cultured on PEEK, MG-63 cells showed a higher viability after O2-NTP treatment. No difference of proliferation was observed whatever the sterilization processes. The cell colonization of the materials' surface was confirmed by scanning electron microscopy. Lactate dehydrogenase (LDH) assay revealed no cytotoxicity. Thus, O2-NTP led to similar cell responses to AC and GI and could be a cost-effective alternative process to the usual sterilization methods for fragile medical devices.
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Affiliation(s)
- Christina Maillet
- BIOS EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP Santé, FED 4231, Université de Reims Champagne Ardenne, Reims, France
- UFR Odontologie, Université de Reims Champagne Ardenne, Reims, France
- Pôle de Médecine Bucco-Dentaire, Centre Hospitalier Universitaire de Reims, Reims, France
| | | | - Florian Le Bras
- BIOS EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP Santé, FED 4231, Université de Reims Champagne Ardenne, Reims, France
| | - Frederic Velard
- BIOS EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP Santé, FED 4231, Université de Reims Champagne Ardenne, Reims, France
| | - Christine Guillaume
- BIOS EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP Santé, FED 4231, Université de Reims Champagne Ardenne, Reims, France
| | - Sophie C. Gangloff
- BIOS EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP Santé, FED 4231, Université de Reims Champagne Ardenne, Reims, France
- UFR Pharmacie, Université de Reims Champagne Ardenne, Reims, France
| | - Marie-Paule Gelle
- BIOS EA 4691, Biomatériaux et Inflammation en Site Osseux, SFR CAP Santé, FED 4231, Université de Reims Champagne Ardenne, Reims, France
- UFR Odontologie, Université de Reims Champagne Ardenne, Reims, France
- Pôle de Médecine Bucco-Dentaire, Centre Hospitalier Universitaire de Reims, Reims, France
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10
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Ferreira I, Lopes C, Rodrigues MS, Rodrigues PV, Castro C, Braga AC, Lopes M, Vaz F, Pina-Vaz I, Martín-Biedma B. Functionalization of gutta-percha surfaces with argon and oxygen plasma treatments to enhance adhesiveness. Sci Rep 2023; 13:12303. [PMID: 37516768 PMCID: PMC10387088 DOI: 10.1038/s41598-023-37372-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/20/2023] [Indexed: 07/31/2023] Open
Abstract
Gutta-percha's lack of adhesion has been presented as a drawback to avoid gaps at sealer/gutta-percha interface. Plasma treatments have been scarcely assessed on gutta-percha surfaces as a method of enhancing adhesiveness. This study aimed to evaluate the effect of low-pressure Argon and Oxygen plasma atmospheres on conventional and bioceramic gutta-percha standardized smooth discs, assessing their roughness, surface free energy, chemical structure, and sealer wettability. A Low-Pressure Plasma Cleaner by Diener Electronic (Zepto Model) was used. Different gases (Argon or Oxygen), powers (25 W, or 50 W), and exposure times (30 s, 60 s, 120 s, or 180 s) were tested in control and experimental groups. Kruskal-Wallis and Student's t-test were used in data analysis. Statistically significant differences were detected when P < 0.05. Both gases showed different behaviors according to the parameters selected. Even though chemical changes were detected, the basic molecular structure was maintained. Argon or Oxygen plasma treatments favoured the wetting of conventional and bioceramic gutta-perchas by Endoresin and AH Plus Bioceramic sealers (P < 0.001). Overall, the functionalization of gutta-percha surfaces with Argon or Oxygen plasma treatments can increase roughness, surface free energy and wettability, which might improve its adhesive properties when compared to non-treated gutta-percha.
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Affiliation(s)
- Inês Ferreira
- CINTESIS Faculty of Medicine of the University of Porto, Porto, Portugal
- Faculty of Dental Medicine of the University of Porto, Porto, Portugal
- School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Cláudia Lopes
- Centre of Physics (CFUM), University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Marco S Rodrigues
- Centre of Physics (CFUM), University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Pedro V Rodrigues
- Institute for Polymers and Composites, University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Cidália Castro
- Institute for Polymers and Composites, University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Ana Cristina Braga
- Department of Production and Systems, ALGORITMI Center, University of Minho, Braga, Portugal
| | - Maria Lopes
- REQUIMTE-LAQV, Department of Metallurgical and Materials Engineering, Faculty of Engineering, University of Porto, Porto, Portugal
| | - Filipe Vaz
- Centre of Physics (CFUM), University of Minho, Campus de Azurém, Guimarães, Portugal
| | - Irene Pina-Vaz
- Faculty of Dental Medicine of the University of Porto, Porto, Portugal.
- CINTESIS@RISE, MEDCIDS, Faculty of Medicine of the University of Porto, Porto, Portugal.
| | - Benjamin Martín-Biedma
- School of Medicine and Dentistry, University of Santiago de Compostela, Santiago de Compostela, Spain
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11
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López-Valverde N, Aragoneses J, Rodríguez C, Aragoneses JM. Effect on osseointegration of dental implants treated with carboxyethylphosphonic acid and functionalized with BMP-2: preliminary study on a minipig model. Front Bioeng Biotechnol 2023; 11:1244667. [PMID: 37576987 PMCID: PMC10413559 DOI: 10.3389/fbioe.2023.1244667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 07/19/2023] [Indexed: 08/15/2023] Open
Abstract
Introduction: Rough titanium surfaces biofunctionalised by osteogenic proteins, such as BMP-2, have been shown to accelerate the osseointegration process and reduce waiting times for prosthetic loading. The preclinical study presented here compared the bone in contact with the implant and bone neoformation and density between titanium (Ti) implants with a conventional etched surface (SLA type) and others treated with carboxyethylphosphonic acid (CEPA) and bone morphogenetic protein 2 (BMP-2), after 4 weeks of implantation in the tibia of a minipig model. Methods: Sixteen implants (eight experimental and eight control) of Ti-Al16-V4 with a tapered screw design and internal hexagonal connection were randomly inserted into the tibiae of four minipigs, four in each tibia. The experimental implants were treated with CEPA and BMP-2 and sterilised with gamma radiation (25 KG). The insertion torque was 40 N and primary stability was measured with the Osstell® device (ISQ 64 ± 2.6). Five bone parameters were evaluated: bone in contact with the implant (BIC), bone in contact with the corrected implant (BICc), new bone formation (BV/TV), bone density between threads (BAI/TA) and peri-implant bone density (BAP/TA). A histomorphometric study was performed and the samples were digitised with Adobe Photoshop Cs6. Statistical analysis of the variables was performed using SAS 9.4. Results: After a period of 4 weeks, no significant clinical signs were observed and all implants were integrated. Light microscopy of the experimental group revealed an ICB with no signs of fiber tissue, but with areas of ectopic new bone in the medullary space. Statistical analysis showed significant results for BIC and BICc (p = 0.0001 and p = 0.001, respectively). No statistical signification was found for the other parameters evaluated. Conclusion: Despite the limitations of this study, our results demonstrated that dental implant surfaces treated with CEPA and BMP-2 improve their biological response to osseointegration.
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Affiliation(s)
- Nansi López-Valverde
- Department of Surgery, Faculty of Medicine, Instituto de Investigación Biomédica de Salamanca (IBSAL), Universidad de Salamanca, Salamanca, Spain
| | - Javier Aragoneses
- Department of Medicine and Medical Specialties, Faculty of Health Sciences, Universidad Alcalá de Henares, Madrid, Spain
| | - Cinthia Rodríguez
- Department of Dentistry, Universidad Federico Henríquez y Carvajal, Santo Domingo, Dominican Republic
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12
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Staehlke S, Brief J, Senz V, Eickner T, Nebe JB. Optimized Gingiva Cell Behavior on Dental Zirconia as a Result of Atmospheric Argon Plasma Activation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4203. [PMID: 37374388 DOI: 10.3390/ma16124203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/01/2023] [Accepted: 06/03/2023] [Indexed: 06/29/2023]
Abstract
Several physico-chemical modifications have been developed to improve cell contact with prosthetic oral implant surfaces. The activation with non-thermal plasmas was one option. Previous studies found that gingiva fibroblasts on laser-microstructured ceramics were hindered in their migration into cavities. However, after argon (Ar) plasma activation, the cells concentrated in and around the niches. The change in surface properties of zirconia and, subsequently, the effect on cell behavior is unclear. In this study, polished zirconia discs were activated by atmospheric pressure Ar plasma using the kINPen®09 jet for 1 min. Surfaces were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy (XPS), and water contact angle. In vitro studies with human gingival fibroblasts (HGF-1) focused on spreading, actin cytoskeleton organization, and calcium ion signaling within 24 h. After Ar plasma activation, surfaces were more hydrophilic. XPS revealed decreased carbon and increased oxygen, zirconia, and yttrium content after Ar plasma. The Ar plasma activation boosted the spreading (2 h), and HGF-1 cells formed strong actin filaments with pronounced lamellipodia. Interestingly, the cells' calcium ion signaling was also promoted. Therefore, argon plasma activation of zirconia seems to be a valuable tool to bioactivate the surface for optimal surface occupation by cells and active cell signaling.
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Affiliation(s)
- Susanne Staehlke
- Institute for Cell Biology, Rostock University Medical Center, 18057 Rostock, Germany
| | - Jakob Brief
- VITA Zahnfabrik H. Rauter GmbH & Co. KG, 79713 Bad Säckingen, Germany
| | - Volkmar Senz
- Institute for Biomedical Engineering, Rostock University Medical Center, 18119 Rostock, Germany
| | - Thomas Eickner
- Institute for Biomedical Engineering, Rostock University Medical Center, 18119 Rostock, Germany
| | - J Barbara Nebe
- Institute for Cell Biology, Rostock University Medical Center, 18057 Rostock, Germany
- Department Science and Technology of Life, Light and Matter, University of Rostock, 18059 Rostock, Germany
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13
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Kang SU, Kim CH, You S, Lee DY, Kim YK, Kim SJ, Kim CK, Kim HK. Plasma Surface Modification of 3Y-TZP at Low and Atmospheric Pressures with Different Treatment Times. Int J Mol Sci 2023; 24:7663. [PMID: 37108832 PMCID: PMC10144831 DOI: 10.3390/ijms24087663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/07/2023] [Accepted: 04/20/2023] [Indexed: 04/29/2023] Open
Abstract
The efficiency of plasma surface modifications depends on the operating conditions. This study investigated the effect of chamber pressure and plasma exposure time on the surface properties of 3Y-TZP with N2/Ar gas. Plate-shaped zirconia specimens were randomly divided into two categories: vacuum plasma and atmospheric plasma. Each group was subdivided into five subgroups according to the treatment time: 1, 5, 10, 15, and 20 min. Following the plasma treatments, we characterized the surface properties, including wettability, chemical composition, crystal structure, surface morphology, and zeta potential. These were analyzed through various techniques, such as contact angle measurement, XPS, XRD, SEM, FIB, CLSM, and electrokinetic measurements. The atmospheric plasma treatments increased zirconia's electron donation (γ-) capacity, while the vacuum plasma treatments decreased γ- parameter with increasing times. The highest concentration of the basic hydroxyl OH(b) groups was identified after a 5 min exposure to atmospheric plasmas. With longer exposure times, the vacuum plasmas induce electrical damage. Both plasma systems increased the zeta potential of 3Y-TZP, showing positive values in a vacuum. In the atmosphere, the zeta potential rapidly increased after 1 min. Atmospheric plasma treatments would be beneficial for the adsorption of oxygen and nitrogen from ambient air and the generation of various active species on the zirconia surface.
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Affiliation(s)
- Sung Un Kang
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon 16499, Republic of Korea
| | - Chul-Ho Kim
- Department of Otolaryngology, School of Medicine, Ajou University, Suwon 16499, Republic of Korea
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Sanghyun You
- Department of Chemical Engineering, Department of Energy Systems Research, Ajou University, Suwon 16499, Republic of Korea
| | - Da-Young Lee
- Department of Chemistry, Department of Energy Systems Research, Ajou University, Suwon 16499, Republic of Korea
| | - Yu-Kwon Kim
- Department of Chemistry, Department of Energy Systems Research, Ajou University, Suwon 16499, Republic of Korea
| | - Seung-Joo Kim
- Department of Chemistry, Department of Energy Systems Research, Ajou University, Suwon 16499, Republic of Korea
| | - Chang-Koo Kim
- Department of Chemical Engineering, Department of Energy Systems Research, Ajou University, Suwon 16499, Republic of Korea
| | - Hee-Kyung Kim
- Department of Prosthodontics, Institute of Oral Health Science, School of Medicine, Ajou University, Suwon 16499, Republic of Korea
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14
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Wen C, Muhetaer HJ, Gao Z, Wu J. Dual response of fibroblasts viability and
Porphyromonas gingivalis
adhesion on nanostructured zirconia abutment surfaces. J Biomed Mater Res A 2022; 110:1645-1654. [PMID: 35676876 DOI: 10.1002/jbm.a.37414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 05/09/2022] [Accepted: 05/23/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Cheng Wen
- Department of Stomatology The Third Affiliated Hospital of Shenzhen University, Shenzhen Luohu Hospital Group Luohu People's Hospital Shenzhen Guangdong China
| | - Huo Jia Muhetaer
- Department of Stomatology The Third Affiliated Hospital of Shenzhen University, Shenzhen Luohu Hospital Group Luohu People's Hospital Shenzhen Guangdong China
| | - Zhengyang Gao
- Department of Stomatology The Third Affiliated Hospital of Shenzhen University, Shenzhen Luohu Hospital Group Luohu People's Hospital Shenzhen Guangdong China
| | - Jincheng Wu
- Department of Stomatology The Third Affiliated Hospital of Shenzhen University, Shenzhen Luohu Hospital Group Luohu People's Hospital Shenzhen Guangdong China
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15
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Du H, Wu Y, Zhang Z, He W, Wang J, Sun Y, Cong L. Oxygen-plasma-assisted formaldehyde adsorption mechanism of SnO 2electrospun fibers. NANOTECHNOLOGY 2022; 33:345504. [PMID: 34902851 DOI: 10.1088/1361-6528/ac4286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Chemisorbed oxygen acts a crucial role in the redox reaction of semiconductor gas sensors, and which is of great significance for improving gas sensing performance. In this study, an oxygen-plasma-assisted technology is presented to enhance the chemisorbed oxygen for improving the formaldehyde sensing performance of SnO2electropun fiber. An inductively coupled plasma device was used for oxygen plasma treatment of SnO2electrospun fibers. The surface of SnO2electrospun fibers was bombarded with high-energy oxygen plasma for facilitating the chemisorption of electronegative oxygen molecules on the SnO2(110) surface to obtain an oxygen-rich structure. Oxygen-plasma-assisted SnO2electrospun fibers exhibited excellent formaldehyde sensing performance. The formaldehyde adsorption mechanism of oxygen-rich SnO2was investigated using density functional theory. After oxygen plasma modification, the adsorption energy and the charge transfer number of formaldehyde to SnO2were increased significantly. And an unoccupied electronic state appeared in the SnO2band structure, which could enhance the formaldehyde adsorption ability of SnO2. The gas sensing test revealed that plasma-treated SnO2electrospun fibers exhibited excellent gas sensing properties to formaldehyde, low operating temperature, high response sensitivity, and considerable cross-selectivity. Thus, plasma modification is a simple and effective method to improve the gas sensing performance of sensors.
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Affiliation(s)
- Haiying Du
- College of Mechanical and Electronic Engineering, Dalian Minzu University, Dalian 116600, People's Republic of China
| | - Yuxia Wu
- College of Mechanical and Electronic Engineering, Dalian Minzu University, Dalian 116600, People's Republic of China
| | - Zhaorui Zhang
- College of Mechanical and Electronic Engineering, Dalian Minzu University, Dalian 116600, People's Republic of China
| | - Wanmin He
- College of Mechanical and Electronic Engineering, Dalian Minzu University, Dalian 116600, People's Republic of China
| | - Jing Wang
- College of Mechanical and Electronic Engineering, Dalian Minzu University, Dalian 116600, People's Republic of China
| | - Yanhui Sun
- College of Information and Communication Engineering, Dalian Minzu University, Dalian 116600, People's Republic of China
| | - Liying Cong
- College of Mechanical and Electronic Engineering, Dalian Minzu University, Dalian 116600, People's Republic of China
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16
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Fu Z, Deng X, Fang X. Effect of addition of Ca 2+ to titanium by a hydrothermal method on soft tissue sealing. Microsc Res Tech 2022; 85:3050-3055. [PMID: 35567791 DOI: 10.1002/jemt.24152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/19/2022] [Accepted: 05/04/2022] [Indexed: 11/10/2022]
Abstract
The long-term stability of implants requires good peri-implant soft tissue sealing. Calcium ion (Ca2+ ) was loaded onto titanium surface by a hydrothermal method. In vitro, the morphology and composition of titanium surfaces were determined by scanning electron microscopy and energy-dispersive spectroscopy; proliferation of hGF-1 cells was measured by the CCK-8 assay; immunofluorescence staining was done to detect adherent proteins on titanium surface. In vivo, the degree of attachment between the implant and the surrounding soft tissue was measured by horseradish peroxidase (HRP). The percentage of hGF-1 cells adhering in the Ca group was significantly higher (p < .01); the fluorescence of integrin-β1 and F-actin in the Ca group was stronger; Ca group had the shorter length of HRP (p < .01). Ca2+ can be added to the surface of titanium by a hydrothermal method and it will be more beneficial for soft tissue early sealing.
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Affiliation(s)
- Zhendi Fu
- Department of Oral and Maxillofacial Surgery, Xiangya Stomatological Hospital, Central South University, Changsha, Hunan, China
| | - Xuehua Deng
- Department of Prosthodontics, Changsha Stomatological Hospital, Changsha, China
| | - Xiaodan Fang
- Department of Oral and Maxillofacial Surgery, Xiangya Stomatological Hospital, Central South University, Changsha, Hunan, China
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17
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Laser Structured Dental Zirconium for Soft Tissue Cell Occupation—Importance of Wettability Modulation. MATERIALS 2022; 15:ma15030732. [PMID: 35160678 PMCID: PMC8836786 DOI: 10.3390/ma15030732] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/14/2022] [Accepted: 01/16/2022] [Indexed: 02/01/2023]
Abstract
Various approaches are being pursued to physico-chemically modify the zirconia neck region of dental implants to improve the integration into the surrounding soft tissue. In this study, polished zirconia discs were laser microstructured with periodic cavities and convex waves. These zirconia samples were additionally activated by argon plasma using the kINPen®09. The surface topography was characterized by scanning electron microscopy and the surface wettability by water contact angle. The in vitro study with human gingival fibroblasts (HGF-1) was focused on cell spreading, morphology, and actin cytoskeleton organization within the first 24 h. The laser-induced microstructures were originally hydrophobic (e.g., 60 µm cavities 138.4°), but after argon plasma activation, the surfaces switched to the hydrophilic state (60 µm cavities 13.7°). HGF-1 cells adhered flatly on the polished zirconia. Spreading is hampered on cavity structures, and cells avoid the holes. However, cells on laser-induced waves spread well. Interestingly, argon plasma activation for only 1 min promoted adhesion and spreading of HGF-1 cells even after 2 h cultivation. The cells crawl and grow into the depth of the cavities. Thus, a combination of both laser microstructuring and argon plasma activation of zirconia seems to be optimal for a strong gingival cell attachment.
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