Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian journal of oral sciences (Online) |
Texto Completo: | https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8668637 |
Resumo: | The objective of this study was to evaluate the effect of abrasion wear on surface roughness and microhardness of different commercially available resin composites simulating pH-challenges of the oral cavity. Methods: Three resin composites (RC) were used in this study: one conventional: Z250; and two bulk fill resin composites (BRC): Tetric N-Ceram (TNC) and Sonic Fill (SF). The RC was inserted in a prefabricated mold (15mm wide x 4mm thickness) in two layers, or in a single layer for BRC. Thirty samples were prepared and surface roughness (Ra) and Knoop microhardness (KHN) test were performed at three different time-points of evaluation: baseline (24h after sample preparation); partial (after pH cycling); and final (after simulated toothbrushing procedure). Two samples of each group were selected after different treatments and analyzed descriptively on a scanning electron microscopy (SEM). Data from Ra and KHN were analyzed by two-way repeated-measures ANOVA and Bonferroni’s post-hoc test with a significance level set at 5%. Results: Ra increased for all groups (p<0.001), at the final time-point, Z250 and TNC groups present the highest values. Oppositely, KHN decreased for all groups (p<0.001), Z250 group showed the highest KHN values for all time-points (p<0.001). The SEM imagens showed a regular surface for samples cycled and irregular with inorganic particles exposed for samples toothbrushed. Conclusion: pH-cycling and simulated toothbrushing affected the superficial properties (roughness and Knoop microhardness), as observed at SEM imagens, with irregular surface with inorganic particles exposure. |
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oai:ojs.periodicos.sbu.unicamp.br:article/8668637 |
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UNICAMP-8 |
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Brazilian journal of oral sciences (Online) |
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|
spelling |
Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin compositesComposite resinsSurface propertiesToothbrushingThe objective of this study was to evaluate the effect of abrasion wear on surface roughness and microhardness of different commercially available resin composites simulating pH-challenges of the oral cavity. Methods: Three resin composites (RC) were used in this study: one conventional: Z250; and two bulk fill resin composites (BRC): Tetric N-Ceram (TNC) and Sonic Fill (SF). The RC was inserted in a prefabricated mold (15mm wide x 4mm thickness) in two layers, or in a single layer for BRC. Thirty samples were prepared and surface roughness (Ra) and Knoop microhardness (KHN) test were performed at three different time-points of evaluation: baseline (24h after sample preparation); partial (after pH cycling); and final (after simulated toothbrushing procedure). Two samples of each group were selected after different treatments and analyzed descriptively on a scanning electron microscopy (SEM). Data from Ra and KHN were analyzed by two-way repeated-measures ANOVA and Bonferroni’s post-hoc test with a significance level set at 5%. Results: Ra increased for all groups (p<0.001), at the final time-point, Z250 and TNC groups present the highest values. Oppositely, KHN decreased for all groups (p<0.001), Z250 group showed the highest KHN values for all time-points (p<0.001). The SEM imagens showed a regular surface for samples cycled and irregular with inorganic particles exposed for samples toothbrushed. Conclusion: pH-cycling and simulated toothbrushing affected the superficial properties (roughness and Knoop microhardness), as observed at SEM imagens, with irregular surface with inorganic particles exposure.Universidade Estadual de Campinas2023-10-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/otherapplication/pdfhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/866863710.20396/bjos.v22i00.8668637Brazilian Journal of Oral Sciences; v. 22 (2023): Continuous Publication; e238637Brazilian Journal of Oral Sciences; Vol. 22 (2023): Continuous Publication; e2386371677-3225reponame:Brazilian journal of oral sciences (Online)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPenghttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8668637/32606Brazil; ContemporanyCopyright (c) 2022 Larissa Daniela Orlando, Rodrigo Barros Esteves Lins, Marina Rodrigues Santi, Luís Roberto Marcondes Martinshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessOrlando, Larissa DanielaLins, Rodrigo Barros EstevesSanti, Marina RodriguesMartins, Luís Roberto Marcondes2023-10-17T12:13:26Zoai:ojs.periodicos.sbu.unicamp.br:article/8668637Revistahttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/PUBhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/oaibrjorals@fop.unicamp.br||brjorals@fop.unicamp.br1677-32251677-3217opendoar:2023-10-17T12:13:26Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP)false |
dc.title.none.fl_str_mv |
Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites |
title |
Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites |
spellingShingle |
Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites Orlando, Larissa Daniela Composite resins Surface properties Toothbrushing |
title_short |
Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites |
title_full |
Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites |
title_fullStr |
Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites |
title_full_unstemmed |
Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites |
title_sort |
Influence of pH-cycling and abrasion wear on the mechanical properties of conventional and bulk fill resin composites |
author |
Orlando, Larissa Daniela |
author_facet |
Orlando, Larissa Daniela Lins, Rodrigo Barros Esteves Santi, Marina Rodrigues Martins, Luís Roberto Marcondes |
author_role |
author |
author2 |
Lins, Rodrigo Barros Esteves Santi, Marina Rodrigues Martins, Luís Roberto Marcondes |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Orlando, Larissa Daniela Lins, Rodrigo Barros Esteves Santi, Marina Rodrigues Martins, Luís Roberto Marcondes |
dc.subject.por.fl_str_mv |
Composite resins Surface properties Toothbrushing |
topic |
Composite resins Surface properties Toothbrushing |
description |
The objective of this study was to evaluate the effect of abrasion wear on surface roughness and microhardness of different commercially available resin composites simulating pH-challenges of the oral cavity. Methods: Three resin composites (RC) were used in this study: one conventional: Z250; and two bulk fill resin composites (BRC): Tetric N-Ceram (TNC) and Sonic Fill (SF). The RC was inserted in a prefabricated mold (15mm wide x 4mm thickness) in two layers, or in a single layer for BRC. Thirty samples were prepared and surface roughness (Ra) and Knoop microhardness (KHN) test were performed at three different time-points of evaluation: baseline (24h after sample preparation); partial (after pH cycling); and final (after simulated toothbrushing procedure). Two samples of each group were selected after different treatments and analyzed descriptively on a scanning electron microscopy (SEM). Data from Ra and KHN were analyzed by two-way repeated-measures ANOVA and Bonferroni’s post-hoc test with a significance level set at 5%. Results: Ra increased for all groups (p<0.001), at the final time-point, Z250 and TNC groups present the highest values. Oppositely, KHN decreased for all groups (p<0.001), Z250 group showed the highest KHN values for all time-points (p<0.001). The SEM imagens showed a regular surface for samples cycled and irregular with inorganic particles exposed for samples toothbrushed. Conclusion: pH-cycling and simulated toothbrushing affected the superficial properties (roughness and Knoop microhardness), as observed at SEM imagens, with irregular surface with inorganic particles exposure. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-10-16 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/other |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8668637 10.20396/bjos.v22i00.8668637 |
url |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8668637 |
identifier_str_mv |
10.20396/bjos.v22i00.8668637 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8668637/32606 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
Brazil; Contemporany |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
dc.source.none.fl_str_mv |
Brazilian Journal of Oral Sciences; v. 22 (2023): Continuous Publication; e238637 Brazilian Journal of Oral Sciences; Vol. 22 (2023): Continuous Publication; e238637 1677-3225 reponame:Brazilian journal of oral sciences (Online) instname:Universidade Estadual de Campinas (UNICAMP) instacron:UNICAMP |
instname_str |
Universidade Estadual de Campinas (UNICAMP) |
instacron_str |
UNICAMP |
institution |
UNICAMP |
reponame_str |
Brazilian journal of oral sciences (Online) |
collection |
Brazilian journal of oral sciences (Online) |
repository.name.fl_str_mv |
Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP) |
repository.mail.fl_str_mv |
brjorals@fop.unicamp.br||brjorals@fop.unicamp.br |
_version_ |
1800216404117422080 |