Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent

Detalhes bibliográficos
Autor(a) principal: Cotes, Caroline [UNESP]
Data de Publicação: 2015
Outros Autores: Cardoso, Mayra, Melo, Renata Marques de [UNESP], Valandro, Luiz Felipe [UNESP], Bottino, Marco Antonio [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572015000100071&lng=en&nrm=iso&tlng=en
http://hdl.handle.net/11449/128896
Resumo: Objective: The purpose of this study was to assess the influence of conditioning methods and thermocycling on the bond strength between composite core and resin cement. Material and Methods: Eighty blocks (8x8x4 mm) were prepared with core build-up composite. The cementation surface was roughened with 120-grit carbide paper and the blocks were thermocycled (5,000 cycles, between 5 degrees C and 55 degrees C, with a 30 s dwell time in each bath). A layer of temporary luting agent was applied. After 24 h, the layer was removed, and the blocks were divided into five groups, according to surface treatment: (NT) No treatment (control); (SP) Grinding with 120-grit carbide paper; (AC) Etching with 37% phosphoric acid; (SC) Sandblasting with 30 mm SiO2 particles, silane application; (AO) Sandblasting with 50 mu m Al2O3 particles, silane application. Two composite blocks were cemented to each other (n=8) and sectioned into sticks. Half of the specimens from each block were immediately tested for microtensile bond strength (mu TBS), while the other half was subjected to storage for 6 months, thermocycling (12,000 cycles, between 5 degrees C and 55 degrees C, with a dwell time of 30 s in each bath) and mu TBS test in a mechanical testing machine. Bond strength data were analyzed by repeated measures two-way ANOVA and Tukey test (alpha=0.05). Results: The mu TBS was significantly affected by surface treatment (p=0.007) and thermocycling (p=0.000). Before aging, the SP group presented higher bond strength when compared to NT and AC groups, whereas all the other groups were statistically similar. After aging, all the groups were statistically similar. SP submitted to thermocycling showed lower bond strength than SP without thermocycling. Conclusion: Core composites should be roughened with a diamond bur before the luting process. Thermocycling tends to reduce the bond strength between composite and resin cement.
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spelling Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agentComposite resinsAgingCementationObjective: The purpose of this study was to assess the influence of conditioning methods and thermocycling on the bond strength between composite core and resin cement. Material and Methods: Eighty blocks (8x8x4 mm) were prepared with core build-up composite. The cementation surface was roughened with 120-grit carbide paper and the blocks were thermocycled (5,000 cycles, between 5 degrees C and 55 degrees C, with a 30 s dwell time in each bath). A layer of temporary luting agent was applied. After 24 h, the layer was removed, and the blocks were divided into five groups, according to surface treatment: (NT) No treatment (control); (SP) Grinding with 120-grit carbide paper; (AC) Etching with 37% phosphoric acid; (SC) Sandblasting with 30 mm SiO2 particles, silane application; (AO) Sandblasting with 50 mu m Al2O3 particles, silane application. Two composite blocks were cemented to each other (n=8) and sectioned into sticks. Half of the specimens from each block were immediately tested for microtensile bond strength (mu TBS), while the other half was subjected to storage for 6 months, thermocycling (12,000 cycles, between 5 degrees C and 55 degrees C, with a dwell time of 30 s in each bath) and mu TBS test in a mechanical testing machine. Bond strength data were analyzed by repeated measures two-way ANOVA and Tukey test (alpha=0.05). Results: The mu TBS was significantly affected by surface treatment (p=0.007) and thermocycling (p=0.000). Before aging, the SP group presented higher bond strength when compared to NT and AC groups, whereas all the other groups were statistically similar. After aging, all the groups were statistically similar. SP submitted to thermocycling showed lower bond strength than SP without thermocycling. Conclusion: Core composites should be roughened with a diamond bur before the luting process. Thermocycling tends to reduce the bond strength between composite and resin cement.Univ Estadual Paulista, Inst Sci &Technol, Dept Dent Mat &Prosthodont, BR-12245000 Sao Jose Dos Campos, SP, BrazilUniv Veiga Almeida, Rio De Janeiro, RJ, BrazilUniv Estadual Paulista, Inst Sci &Technol, Dept Dent Mat &Prosthodont, BR-12245000 Sao Jose Dos Campos, SP, BrazilUniv Sao Paulo Fac Odontologia BauruUniversidade Estadual Paulista (Unesp)Univ Veiga AlmeidaCotes, Caroline [UNESP]Cardoso, MayraMelo, Renata Marques de [UNESP]Valandro, Luiz Felipe [UNESP]Bottino, Marco Antonio [UNESP]2015-10-21T13:15:14Z2015-10-21T13:15:14Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article71-78application/pdfhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572015000100071&lng=en&nrm=iso&tlng=enJournal Of Applied Oral Science. Bauru-sp: Univ Sao Paulo Fac Odontologia Bauru, v. 23, n. 1, p. 71-78, 2015.1678-7757http://hdl.handle.net/11449/12889610.1590/1678-775720140113S1678-77572015000100071WOS:000351541300012WOS000351541300012.pdf9234456003563666Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Applied Oral Science1.7090,645info:eu-repo/semantics/openAccess2023-12-29T06:18:01Zoai:repositorio.unesp.br:11449/128896Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-29T06:18:01Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent
title Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent
spellingShingle Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent
Cotes, Caroline [UNESP]
Composite resins
Aging
Cementation
title_short Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent
title_full Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent
title_fullStr Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent
title_full_unstemmed Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent
title_sort Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent
author Cotes, Caroline [UNESP]
author_facet Cotes, Caroline [UNESP]
Cardoso, Mayra
Melo, Renata Marques de [UNESP]
Valandro, Luiz Felipe [UNESP]
Bottino, Marco Antonio [UNESP]
author_role author
author2 Cardoso, Mayra
Melo, Renata Marques de [UNESP]
Valandro, Luiz Felipe [UNESP]
Bottino, Marco Antonio [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Univ Veiga Almeida
dc.contributor.author.fl_str_mv Cotes, Caroline [UNESP]
Cardoso, Mayra
Melo, Renata Marques de [UNESP]
Valandro, Luiz Felipe [UNESP]
Bottino, Marco Antonio [UNESP]
dc.subject.por.fl_str_mv Composite resins
Aging
Cementation
topic Composite resins
Aging
Cementation
description Objective: The purpose of this study was to assess the influence of conditioning methods and thermocycling on the bond strength between composite core and resin cement. Material and Methods: Eighty blocks (8x8x4 mm) were prepared with core build-up composite. The cementation surface was roughened with 120-grit carbide paper and the blocks were thermocycled (5,000 cycles, between 5 degrees C and 55 degrees C, with a 30 s dwell time in each bath). A layer of temporary luting agent was applied. After 24 h, the layer was removed, and the blocks were divided into five groups, according to surface treatment: (NT) No treatment (control); (SP) Grinding with 120-grit carbide paper; (AC) Etching with 37% phosphoric acid; (SC) Sandblasting with 30 mm SiO2 particles, silane application; (AO) Sandblasting with 50 mu m Al2O3 particles, silane application. Two composite blocks were cemented to each other (n=8) and sectioned into sticks. Half of the specimens from each block were immediately tested for microtensile bond strength (mu TBS), while the other half was subjected to storage for 6 months, thermocycling (12,000 cycles, between 5 degrees C and 55 degrees C, with a dwell time of 30 s in each bath) and mu TBS test in a mechanical testing machine. Bond strength data were analyzed by repeated measures two-way ANOVA and Tukey test (alpha=0.05). Results: The mu TBS was significantly affected by surface treatment (p=0.007) and thermocycling (p=0.000). Before aging, the SP group presented higher bond strength when compared to NT and AC groups, whereas all the other groups were statistically similar. After aging, all the groups were statistically similar. SP submitted to thermocycling showed lower bond strength than SP without thermocycling. Conclusion: Core composites should be roughened with a diamond bur before the luting process. Thermocycling tends to reduce the bond strength between composite and resin cement.
publishDate 2015
dc.date.none.fl_str_mv 2015-10-21T13:15:14Z
2015-10-21T13:15:14Z
2015-01-01
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://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572015000100071&lng=en&nrm=iso&tlng=en
Journal Of Applied Oral Science. Bauru-sp: Univ Sao Paulo Fac Odontologia Bauru, v. 23, n. 1, p. 71-78, 2015.
1678-7757
http://hdl.handle.net/11449/128896
10.1590/1678-775720140113
S1678-77572015000100071
WOS:000351541300012
WOS000351541300012.pdf
9234456003563666
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572015000100071&lng=en&nrm=iso&tlng=en
http://hdl.handle.net/11449/128896
identifier_str_mv Journal Of Applied Oral Science. Bauru-sp: Univ Sao Paulo Fac Odontologia Bauru, v. 23, n. 1, p. 71-78, 2015.
1678-7757
10.1590/1678-775720140113
S1678-77572015000100071
WOS:000351541300012
WOS000351541300012.pdf
9234456003563666
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal Of Applied Oral Science
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0,645
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dc.format.none.fl_str_mv 71-78
application/pdf
dc.publisher.none.fl_str_mv Univ Sao Paulo Fac Odontologia Bauru
publisher.none.fl_str_mv Univ Sao Paulo Fac Odontologia Bauru
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
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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)
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