Fracture resistance of extensive bulk-fill composite restorations after selective caries removal

Detalhes bibliográficos
Autor(a) principal: SANTANA,Márcia Luciana Carregosa
Data de Publicação: 2020
Outros Autores: PAIVA,Lilian Fernanda Santos, CARNEIRO,Vanda Sanderana Macedo, GOMES,Anderson Stevens Leônidas, CENCI,Maximiliano Sérgio, FARIA-E-SILVA,Andre Luis
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Oral Research
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242020000100280
Resumo: Abstract This study evaluated the effect of selective carious tissue removal on the fracture strength and failure mode of composite restorations in molars presenting only the buccal cusps. Deep cavities were prepared on the occlusal surface, and the lingual cusps were removed. Carious lesions in the middle of the pulpal wall were artificially induced with acetic acid (pH = 4.5) for 35 days. The demineralized dentin was left intact or was completely removed prior to restoration with a bulk-fill composite (n = 10). Images of the specimens were obtained by optical coherence tomography (OCT) before and after the caries induction/removal. The mechanical resistance to fracture by axial compressive loading and the failure type and extension were determined. The pulpal wall/composite interface of the fractured specimens was analyzed by OCT. The data were analyzed for significance with t-tests (α = 0.05). The deepest cavities and a more frequent occurrence of pulpal exposure were observed more often for non-selective carious tissue removal. The protocol of carious tissue removal did not affect the fracture strength (p = 0.554). An increased occurrence of catastrophic failures involving the roots was observed for non-selective carious tissue removal. Some occurrences of restoration displacement or cracks throughout the resin-dentin were observed only for the selective carious tissue approach. Selective carious tissue removal is a feasible approach to extensively damaged teeth since it reduced the occurrence of pulpal exposure and root fractures, without compromising the fracture strength.
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spelling Fracture resistance of extensive bulk-fill composite restorations after selective caries removalDental CariesComposite ResinsDental Restoration FailureTomography, Optical CoherenceAbstract This study evaluated the effect of selective carious tissue removal on the fracture strength and failure mode of composite restorations in molars presenting only the buccal cusps. Deep cavities were prepared on the occlusal surface, and the lingual cusps were removed. Carious lesions in the middle of the pulpal wall were artificially induced with acetic acid (pH = 4.5) for 35 days. The demineralized dentin was left intact or was completely removed prior to restoration with a bulk-fill composite (n = 10). Images of the specimens were obtained by optical coherence tomography (OCT) before and after the caries induction/removal. The mechanical resistance to fracture by axial compressive loading and the failure type and extension were determined. The pulpal wall/composite interface of the fractured specimens was analyzed by OCT. The data were analyzed for significance with t-tests (α = 0.05). The deepest cavities and a more frequent occurrence of pulpal exposure were observed more often for non-selective carious tissue removal. The protocol of carious tissue removal did not affect the fracture strength (p = 0.554). An increased occurrence of catastrophic failures involving the roots was observed for non-selective carious tissue removal. Some occurrences of restoration displacement or cracks throughout the resin-dentin were observed only for the selective carious tissue approach. Selective carious tissue removal is a feasible approach to extensively damaged teeth since it reduced the occurrence of pulpal exposure and root fractures, without compromising the fracture strength.Sociedade Brasileira de Pesquisa Odontológica - SBPqO2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242020000100280Brazilian Oral Research v.34 2020reponame:Brazilian Oral Researchinstname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)instacron:SBPQO10.1590/1807-3107bor-2020.vol34.0111info:eu-repo/semantics/openAccessSANTANA,Márcia Luciana CarregosaPAIVA,Lilian Fernanda SantosCARNEIRO,Vanda Sanderana MacedoGOMES,Anderson Stevens LeônidasCENCI,Maximiliano SérgioFARIA-E-SILVA,Andre Luiseng2020-08-26T00:00:00Zoai:scielo:S1806-83242020000100280Revistahttps://www.scielo.br/j/bor/https://old.scielo.br/oai/scielo-oai.phppob@edu.usp.br||bor@sbpqo.org.br1807-31071806-8324opendoar:2020-08-26T00:00Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)false
dc.title.none.fl_str_mv Fracture resistance of extensive bulk-fill composite restorations after selective caries removal
title Fracture resistance of extensive bulk-fill composite restorations after selective caries removal
spellingShingle Fracture resistance of extensive bulk-fill composite restorations after selective caries removal
SANTANA,Márcia Luciana Carregosa
Dental Caries
Composite Resins
Dental Restoration Failure
Tomography, Optical Coherence
title_short Fracture resistance of extensive bulk-fill composite restorations after selective caries removal
title_full Fracture resistance of extensive bulk-fill composite restorations after selective caries removal
title_fullStr Fracture resistance of extensive bulk-fill composite restorations after selective caries removal
title_full_unstemmed Fracture resistance of extensive bulk-fill composite restorations after selective caries removal
title_sort Fracture resistance of extensive bulk-fill composite restorations after selective caries removal
author SANTANA,Márcia Luciana Carregosa
author_facet SANTANA,Márcia Luciana Carregosa
PAIVA,Lilian Fernanda Santos
CARNEIRO,Vanda Sanderana Macedo
GOMES,Anderson Stevens Leônidas
CENCI,Maximiliano Sérgio
FARIA-E-SILVA,Andre Luis
author_role author
author2 PAIVA,Lilian Fernanda Santos
CARNEIRO,Vanda Sanderana Macedo
GOMES,Anderson Stevens Leônidas
CENCI,Maximiliano Sérgio
FARIA-E-SILVA,Andre Luis
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv SANTANA,Márcia Luciana Carregosa
PAIVA,Lilian Fernanda Santos
CARNEIRO,Vanda Sanderana Macedo
GOMES,Anderson Stevens Leônidas
CENCI,Maximiliano Sérgio
FARIA-E-SILVA,Andre Luis
dc.subject.por.fl_str_mv Dental Caries
Composite Resins
Dental Restoration Failure
Tomography, Optical Coherence
topic Dental Caries
Composite Resins
Dental Restoration Failure
Tomography, Optical Coherence
description Abstract This study evaluated the effect of selective carious tissue removal on the fracture strength and failure mode of composite restorations in molars presenting only the buccal cusps. Deep cavities were prepared on the occlusal surface, and the lingual cusps were removed. Carious lesions in the middle of the pulpal wall were artificially induced with acetic acid (pH = 4.5) for 35 days. The demineralized dentin was left intact or was completely removed prior to restoration with a bulk-fill composite (n = 10). Images of the specimens were obtained by optical coherence tomography (OCT) before and after the caries induction/removal. The mechanical resistance to fracture by axial compressive loading and the failure type and extension were determined. The pulpal wall/composite interface of the fractured specimens was analyzed by OCT. The data were analyzed for significance with t-tests (α = 0.05). The deepest cavities and a more frequent occurrence of pulpal exposure were observed more often for non-selective carious tissue removal. The protocol of carious tissue removal did not affect the fracture strength (p = 0.554). An increased occurrence of catastrophic failures involving the roots was observed for non-selective carious tissue removal. Some occurrences of restoration displacement or cracks throughout the resin-dentin were observed only for the selective carious tissue approach. Selective carious tissue removal is a feasible approach to extensively damaged teeth since it reduced the occurrence of pulpal exposure and root fractures, without compromising the fracture strength.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242020000100280
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242020000100280
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1807-3107bor-2020.vol34.0111
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Pesquisa Odontológica - SBPqO
publisher.none.fl_str_mv Sociedade Brasileira de Pesquisa Odontológica - SBPqO
dc.source.none.fl_str_mv Brazilian Oral Research v.34 2020
reponame:Brazilian Oral Research
instname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
instacron:SBPQO
instname_str Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
instacron_str SBPQO
institution SBPQO
reponame_str Brazilian Oral Research
collection Brazilian Oral Research
repository.name.fl_str_mv Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)
repository.mail.fl_str_mv pob@edu.usp.br||bor@sbpqo.org.br
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