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Nakonieczny DS, Antonowicz M, SimhaMartynkova G, Kern F, Pazourková L, Erfurt K, Hüpsch M. PA-12-Zirconia-Alumina-Cenospheres 3D Printed Composites: Accelerated Ageing and Role of the Sterilisation Process for Physicochemical Properties. Polymers (Basel) 2022; 14:polym14153152. [PMID: 35956670 PMCID: PMC9370858 DOI: 10.3390/polym14153152] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 12/04/2022] Open
Abstract
The aim of this study was to conduct artificial ageing tests on polymer-ceramic composites prepared from polyamide PA-12 polymer matrix for medical applications and three different variants of ceramic fillers: zirconia, alumina and cenospheres. Before ageing, the samples were subjected to ethyl oxide sterilization. The composite variants were prepared for 3D printing using the fused deposition modeling method. The control group consisted of unsterilized samples. Samples were subjected to artificial ageing in a high-pressure autoclave. Ageing conditions were calculated from the modified Hammerlich Arrhenius kinetic equation. Ageing was carried out in artificial saliva. After ageing the composites were subjected to mechanical (tensile strength, hardness, surface roughness) testing, chemical and structural (MS, FTIR) analysis, electron microscopy observations (SEM/EDS) and absorbability measurements.
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Affiliation(s)
- Damian S. Nakonieczny
- Institute for Manufacturing Technologies of Ceramic Components and Composites, University of Stuttgart, 70569 Stuttgart, Germany;
- Nanotechnology Centre, CEET, VŠB—Technical University of Ostrava, 17. Listopadu 15, 708733 Ostrava-Poruba, Czech Republic;
- Department of Biomedical Engineering, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland; (M.A.); (M.H.)
- Correspondence: ; Tel.: +48-791-515-766
| | - Magdalena Antonowicz
- Department of Biomedical Engineering, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland; (M.A.); (M.H.)
| | - Gražyna SimhaMartynkova
- Nanotechnology Centre, CEET, VŠB—Technical University of Ostrava, 17. Listopadu 15, 708733 Ostrava-Poruba, Czech Republic;
| | - Frank Kern
- Institute for Manufacturing Technologies of Ceramic Components and Composites, University of Stuttgart, 70569 Stuttgart, Germany;
| | - Lenka Pazourková
- IT4 Innovations, VŠB—Technical University of Ostrava, 17. Listopadu 15, 708733 Ostrava-Poruba, Czech Republic;
| | - Karol Erfurt
- Faculty of Chemistry, Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland;
| | - Michał Hüpsch
- Department of Biomedical Engineering, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland; (M.A.); (M.H.)
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Parisi L, Rivara F, Costa CA, Abuna RP, Palioto DB, Macaluso GM. Aptamers recognizing fibronectin confer improved bioactivity to biomaterials and promote new bone formation in a periodontal defect in rats. Biomed Mater 2020; 16:015016. [PMID: 33325378 DOI: 10.1088/1748-605x/abb6b2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The use of alloplastic materials in periodontal regenerative therapies is limited by their incapacity to establish a dynamic dialog with the surrounding milieu. The aim of the present study was to control biomaterial surface bioactivity by introducing aptamers to induce the selective adsorption of fibronectin from blood, thus promoting platelets activation in vitro and bone regeneration in vivo. A hyaluronic acid/polyethyleneglycole-based hydrogel was enriched with aptamers selected for recognizing and binding fibronectin. In vitro, the capacity of constructs to support osteoblast adhesion, as well as platelets aggregation and activation was assessed by chemiluminescence within 24 h. Matrices were then evaluated in a rat periodontal defect to assess their regenerative potential by microcomputed tomography (µCT) and their osteogenic capacity by Luminex assay 5, 15 and 30 d postoperatively. Aptamers were found to confer matrices the capacity of sustaining firm cell adhesion (p = 0.0377) and to promote platelets activation (p = 0.0442). In vivo, aptamers promoted new bone formation 30 d post-operatively (p < 0.001) by enhancing osteoblastic lineage commitment maturation. Aptamers are a viable surface modification, which confers alloplastic materials the potential capacity to orchestrate blood clot formation, thus controlling bone healing.
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Affiliation(s)
- Ludovica Parisi
- Centro Universitario di Odontoiatria, University of Parma, Via Gramsci 14, Parma 43126, Italy
- Dipartimento di Medicina e Chirurgia, University of Parma, Via Gramsci 14, Parma 43126, Italy
- Laboratory for Oral Molecular Biology, Dental Research Center, Department of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, University of Bern, Freiburgstrasse 3, Bern 3010, Switzerland
| | - Federico Rivara
- Centro Universitario di Odontoiatria, University of Parma, Via Gramsci 14, Parma 43126, Italy
- Dipartimento di Medicina e Chirurgia, University of Parma, Via Gramsci 14, Parma 43126, Italy
| | - Camila A Costa
- Department of Oral & Maxillofacial Surgery, and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. Do Cafè, Ribeirão Preto, SP 14040-904, Brazil
- Department of Stomatological Sciences, School of Dentistry, Federal University of Goias, Avenida Arumã, Goiâna, GO 74835-320, Brazil
| | - Rodriguo Pf Abuna
- Cell Culture Laboratory, School of Dentistry of Ribeirao Preto, University of São Paulo, Av. Do Cafè, Ribeirão Preto, SP 14040-904, Brazil
- Fiocruz-Bi-Instituional Translational Medicine Project, Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Rua dos Técnicos, Ribeirão Preto, SP 14040-030, Brazil
| | - Daniela B Palioto
- Department of Oral & Maxillofacial Surgery, and Periodontology, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. Do Cafè, Ribeirão Preto, SP 14040-904, Brazil
| | - Guido M Macaluso
- Centro Universitario di Odontoiatria, University of Parma, Via Gramsci 14, Parma 43126, Italy
- Dipartimento di Medicina e Chirurgia, University of Parma, Via Gramsci 14, Parma 43126, Italy
- Istituto dei Materiali per l'Elettronica ed il Magnetismo, Consiglio Nazionale delle Ricerche, Parco Area delle Scienze 37/A, Parma 43124, Italy
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