Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate

Detalhes bibliográficos
Autor(a) principal: de Lima , Leonardo Custódio
Data de Publicação: 2023
Outros Autores: Miranda, Jean Soares, de Carvalho, Ronaldo Luís Almeida, Barcellos, Aline Serrado de Pinho, Amaral, Marina, Kimpara, Estevão Tomomitsu
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Dental Science
Texto Completo: https://ojs.ict.unesp.br/index.php/cob/article/view/3923
Resumo: Objective: To evaluate the biaxial flexural strength (BFS) of lithium disilicate (L), cemented on different substrates (epoxy resin - E and metal - M) with dual-cure resin cement (Rc) and zinc phosphate cement (Zc), not aged, thermally aged (TC) or thermo-mechanical aged (TC/MC). Material and Methods: Disks of L, E, and M were fabricated, and the cementation was performed according to the following groups: ERc (L+E+Rc); MRc (L+M+Rc); MZc (L+M+Zc); EZc (L+E+Zc). Ten samples from each described group were tested in BFS, ten more samples were subjected to TC (1×104 cycles between 5 ºC and 55 ºC water), and the last 10 samples were subjected to TC/MC (MC: 1.2×106 cycles, 50 N, 3.8 Hz). The BFS test was performed and scanning electron microscopy (SEM) was performed to evaluate the failure mode. The effect of the cementation strategy (cement/substrate) was compared in each aging method and the effect of the aging method was evaluated for each cementation strategy by one-way ANOVA and Tukey post-hoc test (a=0.05). Results: The strength values were highest to M (237.8 ~ 463.9 MPa), in comparison to the E (41.03 ~ 66.76 MPa), despite aging and luting agent. Flexural strength data decreased after TC and TC/MC in groups cemented with Zc, but was stable when cemented with Rc. SEM analysis indicated that failure origins were located at the tensile surface of the L. Conclusion: Lithium disilicate discs cemented to the metallic substrate presented the highest biaxial flexural strength. The cementation with dual-cure resin cement did not decrease BFS after aging. KEYWORDS Aging; Cementation; Ceramics; Flexural strength; Lithium disilicate.
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spelling Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicateObjective: To evaluate the biaxial flexural strength (BFS) of lithium disilicate (L), cemented on different substrates (epoxy resin - E and metal - M) with dual-cure resin cement (Rc) and zinc phosphate cement (Zc), not aged, thermally aged (TC) or thermo-mechanical aged (TC/MC). Material and Methods: Disks of L, E, and M were fabricated, and the cementation was performed according to the following groups: ERc (L+E+Rc); MRc (L+M+Rc); MZc (L+M+Zc); EZc (L+E+Zc). Ten samples from each described group were tested in BFS, ten more samples were subjected to TC (1×104 cycles between 5 ºC and 55 ºC water), and the last 10 samples were subjected to TC/MC (MC: 1.2×106 cycles, 50 N, 3.8 Hz). The BFS test was performed and scanning electron microscopy (SEM) was performed to evaluate the failure mode. The effect of the cementation strategy (cement/substrate) was compared in each aging method and the effect of the aging method was evaluated for each cementation strategy by one-way ANOVA and Tukey post-hoc test (a=0.05). Results: The strength values were highest to M (237.8 ~ 463.9 MPa), in comparison to the E (41.03 ~ 66.76 MPa), despite aging and luting agent. Flexural strength data decreased after TC and TC/MC in groups cemented with Zc, but was stable when cemented with Rc. SEM analysis indicated that failure origins were located at the tensile surface of the L. Conclusion: Lithium disilicate discs cemented to the metallic substrate presented the highest biaxial flexural strength. The cementation with dual-cure resin cement did not decrease BFS after aging. KEYWORDS Aging; Cementation; Ceramics; Flexural strength; Lithium disilicate.Institute of Science and Technology of São José dos Campos2023-10-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.ict.unesp.br/index.php/cob/article/view/3923Brazilian Dental Science; Vol. 26 No. 4 (2023): Oct - Dec / 2023 - Published Oct 2023Brazilian Dental Science; v. 26 n. 4 (2023): Oct - Dec / 2023 - Published Oct 20232178-6011reponame:Brazilian Dental Scienceinstname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)instacron:UNESPenghttps://ojs.ict.unesp.br/index.php/cob/article/view/3923/4671Copyright (c) 2023 Brazilian Dental Scienceinfo:eu-repo/semantics/openAccess de Lima , Leonardo CustódioMiranda, Jean Soaresde Carvalho, Ronaldo Luís AlmeidaBarcellos, Aline Serrado de PinhoAmaral, MarinaKimpara, Estevão Tomomitsu2023-12-18T18:42:48Zoai:ojs.pkp.sfu.ca:article/3923Revistahttp://bds.ict.unesp.br/PUBhttp://ojs.fosjc.unesp.br/index.php/index/oaisergio@fosjc.unesp.br||sergio@fosjc.unesp.br2178-60112178-6011opendoar:2023-12-18T18:42:48Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)false
dc.title.none.fl_str_mv Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate
title Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate
spellingShingle Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate
de Lima , Leonardo Custódio
title_short Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate
title_full Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate
title_fullStr Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate
title_full_unstemmed Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate
title_sort Influence of substrate, cement and aging on the biaxial flexural strength of lithium disilicate
author de Lima , Leonardo Custódio
author_facet de Lima , Leonardo Custódio
Miranda, Jean Soares
de Carvalho, Ronaldo Luís Almeida
Barcellos, Aline Serrado de Pinho
Amaral, Marina
Kimpara, Estevão Tomomitsu
author_role author
author2 Miranda, Jean Soares
de Carvalho, Ronaldo Luís Almeida
Barcellos, Aline Serrado de Pinho
Amaral, Marina
Kimpara, Estevão Tomomitsu
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv de Lima , Leonardo Custódio
Miranda, Jean Soares
de Carvalho, Ronaldo Luís Almeida
Barcellos, Aline Serrado de Pinho
Amaral, Marina
Kimpara, Estevão Tomomitsu
description Objective: To evaluate the biaxial flexural strength (BFS) of lithium disilicate (L), cemented on different substrates (epoxy resin - E and metal - M) with dual-cure resin cement (Rc) and zinc phosphate cement (Zc), not aged, thermally aged (TC) or thermo-mechanical aged (TC/MC). Material and Methods: Disks of L, E, and M were fabricated, and the cementation was performed according to the following groups: ERc (L+E+Rc); MRc (L+M+Rc); MZc (L+M+Zc); EZc (L+E+Zc). Ten samples from each described group were tested in BFS, ten more samples were subjected to TC (1×104 cycles between 5 ºC and 55 ºC water), and the last 10 samples were subjected to TC/MC (MC: 1.2×106 cycles, 50 N, 3.8 Hz). The BFS test was performed and scanning electron microscopy (SEM) was performed to evaluate the failure mode. The effect of the cementation strategy (cement/substrate) was compared in each aging method and the effect of the aging method was evaluated for each cementation strategy by one-way ANOVA and Tukey post-hoc test (a=0.05). Results: The strength values were highest to M (237.8 ~ 463.9 MPa), in comparison to the E (41.03 ~ 66.76 MPa), despite aging and luting agent. Flexural strength data decreased after TC and TC/MC in groups cemented with Zc, but was stable when cemented with Rc. SEM analysis indicated that failure origins were located at the tensile surface of the L. Conclusion: Lithium disilicate discs cemented to the metallic substrate presented the highest biaxial flexural strength. The cementation with dual-cure resin cement did not decrease BFS after aging. KEYWORDS Aging; Cementation; Ceramics; Flexural strength; Lithium disilicate.
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
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.ict.unesp.br/index.php/cob/article/view/3923
url https://ojs.ict.unesp.br/index.php/cob/article/view/3923
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://ojs.ict.unesp.br/index.php/cob/article/view/3923/4671
dc.rights.driver.fl_str_mv Copyright (c) 2023 Brazilian Dental Science
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2023 Brazilian Dental Science
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institute of Science and Technology of São José dos Campos
publisher.none.fl_str_mv Institute of Science and Technology of São José dos Campos
dc.source.none.fl_str_mv Brazilian Dental Science; Vol. 26 No. 4 (2023): Oct - Dec / 2023 - Published Oct 2023
Brazilian Dental Science; v. 26 n. 4 (2023): Oct - Dec / 2023 - Published Oct 2023
2178-6011
reponame:Brazilian Dental Science
instname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Brazilian Dental Science
collection Brazilian Dental Science
repository.name.fl_str_mv Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
repository.mail.fl_str_mv sergio@fosjc.unesp.br||sergio@fosjc.unesp.br
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