Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorations
Main Author: | |
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Publication Date: | 2023 |
Other Authors: | , |
Format: | Article |
Language: | eng |
Source: | Brazilian journal of oral sciences (Online) |
Download full: | https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8668439 |
Summary: | Various forms of temporary resins are offered on the market; however, the properties of temporary resins obtained by milling and 3D printing have not been fully examined. This study aimed to compare the flexural strength and Vickers hardness of milled and 3D-printed resins. Methods: Three resins were tested: Evolux PMMA (milled resin), Cosmos Temp (3D-printed resin), and Structur 2 SC (bis-acrylic resin, group control). Specimens were prepared with rectangular shapes (n = 12) for flexural strength measurements and disc shapes (n = 9) for Vickers hardness tests. Flexural strength tests were performed at a crosshead speed of 0.75 mm/min, and the Vickers hardness was measured under a load of 20 N for 10 s. The obtained data were subjected to the Kruskal–Wallis test. Results: A significant difference (p < 0.05) in flexural strength was observed among the three sample groups: Evolux PMMA (111.76 MPa), Structur 2 SC (87.34 MPa), and Cosmos Temp (56.83 MPa). No significant difference (p < 0.05) was observed between the Vickers hardness values of Structur 2 SC (33.37 VHN) and Evolux PMMA (29.11 VHN); however, both materials were statistically superior to Cosmos Temp (10.90 VHN). Conclusion: While the mechanical properties of the milled resin were superior or similar to those of the bisacrylic resin, the 3D-printed resin was statistically inferior to both the milled and bis-acrylic resins. |
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Brazilian journal of oral sciences (Online) |
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Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorationsDental restoration, temporaryFlexural strengthHardness testsComputer-aided designVarious forms of temporary resins are offered on the market; however, the properties of temporary resins obtained by milling and 3D printing have not been fully examined. This study aimed to compare the flexural strength and Vickers hardness of milled and 3D-printed resins. Methods: Three resins were tested: Evolux PMMA (milled resin), Cosmos Temp (3D-printed resin), and Structur 2 SC (bis-acrylic resin, group control). Specimens were prepared with rectangular shapes (n = 12) for flexural strength measurements and disc shapes (n = 9) for Vickers hardness tests. Flexural strength tests were performed at a crosshead speed of 0.75 mm/min, and the Vickers hardness was measured under a load of 20 N for 10 s. The obtained data were subjected to the Kruskal–Wallis test. Results: A significant difference (p < 0.05) in flexural strength was observed among the three sample groups: Evolux PMMA (111.76 MPa), Structur 2 SC (87.34 MPa), and Cosmos Temp (56.83 MPa). No significant difference (p < 0.05) was observed between the Vickers hardness values of Structur 2 SC (33.37 VHN) and Evolux PMMA (29.11 VHN); however, both materials were statistically superior to Cosmos Temp (10.90 VHN). Conclusion: While the mechanical properties of the milled resin were superior or similar to those of the bisacrylic resin, the 3D-printed resin was statistically inferior to both the milled and bis-acrylic resins.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/866843910.20396/bjos.v22i00.8668439Brazilian Journal of Oral Sciences; v. 22 (2023): Continuous Publication; e238439Brazilian Journal of Oral Sciences; Vol. 22 (2023): Continuous Publication; e2384391677-3225reponame:Brazilian journal of oral sciences (Online)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPenghttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8668439/32610Brazil; ContemporanyCopyright (c) 2022 Ana Luiza Caetano Souza, Jorge Luiz de Oliveira Cruvinel Filho, Sicknan Soares da Rochahttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessSouza, Ana Luiza CaetanoCruvinel Filho, Jorge Luiz de OliveiraRocha, Sicknan Soares da2023-10-17T12:13:33Zoai:ojs.periodicos.sbu.unicamp.br:article/8668439Revistahttps://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:2023-10-17T12:13:33Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP)false |
dc.title.none.fl_str_mv |
Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorations |
title |
Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorations |
spellingShingle |
Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorations Souza, Ana Luiza Caetano Dental restoration, temporary Flexural strength Hardness tests Computer-aided design |
title_short |
Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorations |
title_full |
Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorations |
title_fullStr |
Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorations |
title_full_unstemmed |
Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorations |
title_sort |
Flexural strength and Vickers hardness of milled and 3D-printed resins for provisional dental restorations |
author |
Souza, Ana Luiza Caetano |
author_facet |
Souza, Ana Luiza Caetano Cruvinel Filho, Jorge Luiz de Oliveira Rocha, Sicknan Soares da |
author_role |
author |
author2 |
Cruvinel Filho, Jorge Luiz de Oliveira Rocha, Sicknan Soares da |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Souza, Ana Luiza Caetano Cruvinel Filho, Jorge Luiz de Oliveira Rocha, Sicknan Soares da |
dc.subject.por.fl_str_mv |
Dental restoration, temporary Flexural strength Hardness tests Computer-aided design |
topic |
Dental restoration, temporary Flexural strength Hardness tests Computer-aided design |
description |
Various forms of temporary resins are offered on the market; however, the properties of temporary resins obtained by milling and 3D printing have not been fully examined. This study aimed to compare the flexural strength and Vickers hardness of milled and 3D-printed resins. Methods: Three resins were tested: Evolux PMMA (milled resin), Cosmos Temp (3D-printed resin), and Structur 2 SC (bis-acrylic resin, group control). Specimens were prepared with rectangular shapes (n = 12) for flexural strength measurements and disc shapes (n = 9) for Vickers hardness tests. Flexural strength tests were performed at a crosshead speed of 0.75 mm/min, and the Vickers hardness was measured under a load of 20 N for 10 s. The obtained data were subjected to the Kruskal–Wallis test. Results: A significant difference (p < 0.05) in flexural strength was observed among the three sample groups: Evolux PMMA (111.76 MPa), Structur 2 SC (87.34 MPa), and Cosmos Temp (56.83 MPa). No significant difference (p < 0.05) was observed between the Vickers hardness values of Structur 2 SC (33.37 VHN) and Evolux PMMA (29.11 VHN); however, both materials were statistically superior to Cosmos Temp (10.90 VHN). Conclusion: While the mechanical properties of the milled resin were superior or similar to those of the bisacrylic resin, the 3D-printed resin was statistically inferior to both the milled and bis-acrylic resins. |
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/8668439 10.20396/bjos.v22i00.8668439 |
url |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8668439 |
identifier_str_mv |
10.20396/bjos.v22i00.8668439 |
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/8668439/32610 |
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; e238439 Brazilian Journal of Oral Sciences; Vol. 22 (2023): Continuous Publication; e238439 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_ |
1788167625123037184 |