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Graphene-Doped Polymethyl Methacrylate (PMMA) as a New Restorative Material in Implant-Prosthetics: In Vitro Analysis of Resistance to Mechanical Fatigue

Background and Purpose: Provisional prostheses in restorations over several implants with immediate loading in completely edentulous patients increase the risk of frequent structural fractures. An analysis was performed of the resistance to fracture of prosthetic structures with cantilevers using gr...

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Autores principales: Selva-Otaolaurruchi, Eduardo J., Fernández-Estevan, Lucía, Solá-Ruiz, María Fernanda, García-Sala-Bonmati, Fernando, Selva-Ribera, Inmaculada, Agustín-Panadero, Rubén
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9960587/
https://www.ncbi.nlm.nih.gov/pubmed/36835805
http://dx.doi.org/10.3390/jcm12041269
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author Selva-Otaolaurruchi, Eduardo J.
Fernández-Estevan, Lucía
Solá-Ruiz, María Fernanda
García-Sala-Bonmati, Fernando
Selva-Ribera, Inmaculada
Agustín-Panadero, Rubén
author_facet Selva-Otaolaurruchi, Eduardo J.
Fernández-Estevan, Lucía
Solá-Ruiz, María Fernanda
García-Sala-Bonmati, Fernando
Selva-Ribera, Inmaculada
Agustín-Panadero, Rubén
author_sort Selva-Otaolaurruchi, Eduardo J.
collection PubMed
description Background and Purpose: Provisional prostheses in restorations over several implants with immediate loading in completely edentulous patients increase the risk of frequent structural fractures. An analysis was performed of the resistance to fracture of prosthetic structures with cantilevers using graphene-doped polymethyl methacrylate (PMMA) resins and CAD-CAM technology. Methods: A master model was produced with four implants measuring 4 mm in diameter and spaced 3 mm apart, over which 44 specimens representing three-unit fixed partial prostheses with a cantilever measuring 11 mm were placed. These structures were cemented over titanium abutments using dual cure resin cement. Twenty-two of the 44 units were manufactured from machined PMMA discs, and 22 were manufactured from PMMA doped with graphene oxide nanoparticles (PMMA-G). All of the samples were tested in a chewing simulator with a load of 80 N until fracture or 240,000 load applications. Results: The mean number of load applications required for temporary restoration until the fracture was 155,455 in the PMMA-G group versus 51,136 in the PMMA group. Conclusions: Resistance to fracture under cyclic loading was three times greater in the PMMA-G group than in the PMMA group.
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spelling pubmed-99605872023-02-26 Graphene-Doped Polymethyl Methacrylate (PMMA) as a New Restorative Material in Implant-Prosthetics: In Vitro Analysis of Resistance to Mechanical Fatigue Selva-Otaolaurruchi, Eduardo J. Fernández-Estevan, Lucía Solá-Ruiz, María Fernanda García-Sala-Bonmati, Fernando Selva-Ribera, Inmaculada Agustín-Panadero, Rubén J Clin Med Article Background and Purpose: Provisional prostheses in restorations over several implants with immediate loading in completely edentulous patients increase the risk of frequent structural fractures. An analysis was performed of the resistance to fracture of prosthetic structures with cantilevers using graphene-doped polymethyl methacrylate (PMMA) resins and CAD-CAM technology. Methods: A master model was produced with four implants measuring 4 mm in diameter and spaced 3 mm apart, over which 44 specimens representing three-unit fixed partial prostheses with a cantilever measuring 11 mm were placed. These structures were cemented over titanium abutments using dual cure resin cement. Twenty-two of the 44 units were manufactured from machined PMMA discs, and 22 were manufactured from PMMA doped with graphene oxide nanoparticles (PMMA-G). All of the samples were tested in a chewing simulator with a load of 80 N until fracture or 240,000 load applications. Results: The mean number of load applications required for temporary restoration until the fracture was 155,455 in the PMMA-G group versus 51,136 in the PMMA group. Conclusions: Resistance to fracture under cyclic loading was three times greater in the PMMA-G group than in the PMMA group. MDPI 2023-02-06 /pmc/articles/PMC9960587/ /pubmed/36835805 http://dx.doi.org/10.3390/jcm12041269 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Selva-Otaolaurruchi, Eduardo J.
Fernández-Estevan, Lucía
Solá-Ruiz, María Fernanda
García-Sala-Bonmati, Fernando
Selva-Ribera, Inmaculada
Agustín-Panadero, Rubén
Graphene-Doped Polymethyl Methacrylate (PMMA) as a New Restorative Material in Implant-Prosthetics: In Vitro Analysis of Resistance to Mechanical Fatigue
title Graphene-Doped Polymethyl Methacrylate (PMMA) as a New Restorative Material in Implant-Prosthetics: In Vitro Analysis of Resistance to Mechanical Fatigue
title_full Graphene-Doped Polymethyl Methacrylate (PMMA) as a New Restorative Material in Implant-Prosthetics: In Vitro Analysis of Resistance to Mechanical Fatigue
title_fullStr Graphene-Doped Polymethyl Methacrylate (PMMA) as a New Restorative Material in Implant-Prosthetics: In Vitro Analysis of Resistance to Mechanical Fatigue
title_full_unstemmed Graphene-Doped Polymethyl Methacrylate (PMMA) as a New Restorative Material in Implant-Prosthetics: In Vitro Analysis of Resistance to Mechanical Fatigue
title_short Graphene-Doped Polymethyl Methacrylate (PMMA) as a New Restorative Material in Implant-Prosthetics: In Vitro Analysis of Resistance to Mechanical Fatigue
title_sort graphene-doped polymethyl methacrylate (pmma) as a new restorative material in implant-prosthetics: in vitro analysis of resistance to mechanical fatigue
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9960587/
https://www.ncbi.nlm.nih.gov/pubmed/36835805
http://dx.doi.org/10.3390/jcm12041269
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