Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins?
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.mtcomm.2019.100835 http://hdl.handle.net/11449/199827 |
Resumo: | Acrylic-based resin is the material of choice for the fabrication of definitive and provisional prostheses. In order to achieve clinical success, it is important to know the most suitable polymerization process for this material. The aim of this study was to evaluate the influence of different polymerization methods on several physical and mechanical properties, before and after thermocycling, of a heat-activated acrylic resin (HAAR). In addition, the degree of conversion (DC) was evaluated for all polymerization methods. Ninety HAAR samples were divided into three groups: conventional polymerization (CP), dry-heat polymerization (DHP), and digital pneumatic polymerization (DPP). Color, microhardness (n = 10), and flexural strength tests (n = 20) were performed, before and after 2000 cycles of thermocycling. The analysis of the DC was performed by using Fourier transform infrared spectroscopy (n = 4). Color alteration and DC data were submitted to one-way analysis of variance (ANOVA). Microhardness and flexural strength data were submitted to two-way repeated measures ANOVA. All results were submitted to the Tukey test (α = .05). The color alteration was statistically lower in the DHP group. The DPP group exhibited higher initial microhardness with a statistically significant difference from other the groups. There was no statistical difference between the groups in regards to flexural strength. The CP and DPP groups had higher DC results. The proposed polymerization methods had divergent results for the different properties analyzed. However, these results were similar to those of conventional polymerization, which is a viable and adequate alternative. |
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Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins?Acrylic resinsColorFlexural strengthHardnessInterim dental prosthesesPolymerizationPolymethyl methacrylateAcrylic-based resin is the material of choice for the fabrication of definitive and provisional prostheses. In order to achieve clinical success, it is important to know the most suitable polymerization process for this material. The aim of this study was to evaluate the influence of different polymerization methods on several physical and mechanical properties, before and after thermocycling, of a heat-activated acrylic resin (HAAR). In addition, the degree of conversion (DC) was evaluated for all polymerization methods. Ninety HAAR samples were divided into three groups: conventional polymerization (CP), dry-heat polymerization (DHP), and digital pneumatic polymerization (DPP). Color, microhardness (n = 10), and flexural strength tests (n = 20) were performed, before and after 2000 cycles of thermocycling. The analysis of the DC was performed by using Fourier transform infrared spectroscopy (n = 4). Color alteration and DC data were submitted to one-way analysis of variance (ANOVA). Microhardness and flexural strength data were submitted to two-way repeated measures ANOVA. All results were submitted to the Tukey test (α = .05). The color alteration was statistically lower in the DHP group. The DPP group exhibited higher initial microhardness with a statistically significant difference from other the groups. There was no statistical difference between the groups in regards to flexural strength. The CP and DPP groups had higher DC results. The proposed polymerization methods had divergent results for the different properties analyzed. However, these results were similar to those of conventional polymerization, which is a viable and adequate alternative.Department of Dental Materials and Prosthodontics Aracatuba Dental School Sao Paulo State University (UNESP)Presidente Prudente Dental School University of Western Sao Paulo (UNOESTE) Presidente PrudenteDepartment of Dental Materials and Prosthodontics Aracatuba Dental School Sao Paulo State University (UNESP)Universidade Estadual Paulista (Unesp)Presidente Prudentedos Santos, Daniela Micheline [UNESP]Penitente, Paulo Augusto [UNESP]da Silva, Emily Vivianne Freitas [UNESP]Commar, Betina Chiarelo [UNESP]Bento Laurindo Júnior, Murilo César [UNESP]de Souza Batista, Victor EduardoGoiato, Marcelo Coelho [UNESP]2020-12-12T01:50:20Z2020-12-12T01:50:20Z2020-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.mtcomm.2019.100835Materials Today Communications, v. 22.2352-4928http://hdl.handle.net/11449/19982710.1016/j.mtcomm.2019.1008352-s2.0-85076677133Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Today Communicationsinfo:eu-repo/semantics/openAccess2021-10-23T10:02:20Zoai:repositorio.unesp.br:11449/199827Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T10:02:20Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins? |
title |
Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins? |
spellingShingle |
Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins? dos Santos, Daniela Micheline [UNESP] Acrylic resins Color Flexural strength Hardness Interim dental prostheses Polymerization Polymethyl methacrylate |
title_short |
Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins? |
title_full |
Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins? |
title_fullStr |
Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins? |
title_full_unstemmed |
Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins? |
title_sort |
Can innovative methods of polymerization improve the physical-mechanical behavior of acrylic resins? |
author |
dos Santos, Daniela Micheline [UNESP] |
author_facet |
dos Santos, Daniela Micheline [UNESP] Penitente, Paulo Augusto [UNESP] da Silva, Emily Vivianne Freitas [UNESP] Commar, Betina Chiarelo [UNESP] Bento Laurindo Júnior, Murilo César [UNESP] de Souza Batista, Victor Eduardo Goiato, Marcelo Coelho [UNESP] |
author_role |
author |
author2 |
Penitente, Paulo Augusto [UNESP] da Silva, Emily Vivianne Freitas [UNESP] Commar, Betina Chiarelo [UNESP] Bento Laurindo Júnior, Murilo César [UNESP] de Souza Batista, Victor Eduardo Goiato, Marcelo Coelho [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Presidente Prudente |
dc.contributor.author.fl_str_mv |
dos Santos, Daniela Micheline [UNESP] Penitente, Paulo Augusto [UNESP] da Silva, Emily Vivianne Freitas [UNESP] Commar, Betina Chiarelo [UNESP] Bento Laurindo Júnior, Murilo César [UNESP] de Souza Batista, Victor Eduardo Goiato, Marcelo Coelho [UNESP] |
dc.subject.por.fl_str_mv |
Acrylic resins Color Flexural strength Hardness Interim dental prostheses Polymerization Polymethyl methacrylate |
topic |
Acrylic resins Color Flexural strength Hardness Interim dental prostheses Polymerization Polymethyl methacrylate |
description |
Acrylic-based resin is the material of choice for the fabrication of definitive and provisional prostheses. In order to achieve clinical success, it is important to know the most suitable polymerization process for this material. The aim of this study was to evaluate the influence of different polymerization methods on several physical and mechanical properties, before and after thermocycling, of a heat-activated acrylic resin (HAAR). In addition, the degree of conversion (DC) was evaluated for all polymerization methods. Ninety HAAR samples were divided into three groups: conventional polymerization (CP), dry-heat polymerization (DHP), and digital pneumatic polymerization (DPP). Color, microhardness (n = 10), and flexural strength tests (n = 20) were performed, before and after 2000 cycles of thermocycling. The analysis of the DC was performed by using Fourier transform infrared spectroscopy (n = 4). Color alteration and DC data were submitted to one-way analysis of variance (ANOVA). Microhardness and flexural strength data were submitted to two-way repeated measures ANOVA. All results were submitted to the Tukey test (α = .05). The color alteration was statistically lower in the DHP group. The DPP group exhibited higher initial microhardness with a statistically significant difference from other the groups. There was no statistical difference between the groups in regards to flexural strength. The CP and DPP groups had higher DC results. The proposed polymerization methods had divergent results for the different properties analyzed. However, these results were similar to those of conventional polymerization, which is a viable and adequate alternative. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:50:20Z 2020-12-12T01:50:20Z 2020-03-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.mtcomm.2019.100835 Materials Today Communications, v. 22. 2352-4928 http://hdl.handle.net/11449/199827 10.1016/j.mtcomm.2019.100835 2-s2.0-85076677133 |
url |
http://dx.doi.org/10.1016/j.mtcomm.2019.100835 http://hdl.handle.net/11449/199827 |
identifier_str_mv |
Materials Today Communications, v. 22. 2352-4928 10.1016/j.mtcomm.2019.100835 2-s2.0-85076677133 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Today Communications |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1792961597190176768 |