On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT Assessment

Detalhes bibliográficos
Autor(a) principal: De-Deus,Gustavo
Data de Publicação: 2016
Outros Autores: Belladonna,Felipe Gonçalves, Marins,Juliana Roter, Silva,Emmanuel João Nogueira Leal, Neves,Aline de Almeida, Souza,Erick Miranda, Machado,Alessandra de Castro, Lopes,Ricardo Tadeu, Versiani,Marco Aurélio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Dental Journal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402016000600664
Resumo: Abstract This study aimed to evaluate the cause-effect relationship between canal preparation with ProTaper Universal (PTU) system and dentinal defects formation using micro-computed tomography (micro-CT) analysis. Forty mesial canals of mandibular molars with a type II Vertucci's canal configuration were scanned at an isotropic resolution of 14.16 µm. The sample was assigned to an experimental (n = 30) and a control (n = 10) groups, and the mesial canals were prepared with PTU system up to F2 instrument. The specimens from the experimental group were scanned and the cross-section images of the mesial roots, before and after preparation, were screened to identify the presence of dentinal defects. In the control group, the specimens were sectioned perpendicularly to the long axis of the root into 1-mm-thick slices (n = 80) and examined under optical microscope. Once a dentinal defect was detected, the slice was scanned through micro-CT. In the experimental group, dentinal micro-cracks were observed in 4,828 slices (24.04%). In all cross-section images, dentinal defects identified in the postoperative images were already present in the corresponding preoperative image. In the control group, 13 out of 80 slices (16.25%) had at least one dentinal defect visualized under stereomicroscopy, which was identified after a further micro-CT scanning. Micro-CT showed reliability as similar as optical microscopy in detecting dentinal defects, adding the possibility of tracking the dentinal tissue, before and after canal preparation, and providing a clear visualization of micro-cracks. Root canal preparation with PTU system did not induce the formation of new dentinal defects.
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spelling On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT AssessmentDentinal micro-cracksmicro-CTroot canal preparationProTaper Universalnickel-titaniumAbstract This study aimed to evaluate the cause-effect relationship between canal preparation with ProTaper Universal (PTU) system and dentinal defects formation using micro-computed tomography (micro-CT) analysis. Forty mesial canals of mandibular molars with a type II Vertucci's canal configuration were scanned at an isotropic resolution of 14.16 µm. The sample was assigned to an experimental (n = 30) and a control (n = 10) groups, and the mesial canals were prepared with PTU system up to F2 instrument. The specimens from the experimental group were scanned and the cross-section images of the mesial roots, before and after preparation, were screened to identify the presence of dentinal defects. In the control group, the specimens were sectioned perpendicularly to the long axis of the root into 1-mm-thick slices (n = 80) and examined under optical microscope. Once a dentinal defect was detected, the slice was scanned through micro-CT. In the experimental group, dentinal micro-cracks were observed in 4,828 slices (24.04%). In all cross-section images, dentinal defects identified in the postoperative images were already present in the corresponding preoperative image. In the control group, 13 out of 80 slices (16.25%) had at least one dentinal defect visualized under stereomicroscopy, which was identified after a further micro-CT scanning. Micro-CT showed reliability as similar as optical microscopy in detecting dentinal defects, adding the possibility of tracking the dentinal tissue, before and after canal preparation, and providing a clear visualization of micro-cracks. Root canal preparation with PTU system did not induce the formation of new dentinal defects.Fundação Odontológica de Ribeirão Preto2016-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402016000600664Brazilian Dental Journal v.27 n.6 2016reponame:Brazilian Dental Journalinstname:Fundação Odontológica de Ribeirão Preto (FUNORP)instacron:FUNORP10.1590/0103-6440201601002info:eu-repo/semantics/openAccessDe-Deus,GustavoBelladonna,Felipe GonçalvesMarins,Juliana RoterSilva,Emmanuel João Nogueira LealNeves,Aline de AlmeidaSouza,Erick MirandaMachado,Alessandra de CastroLopes,Ricardo TadeuVersiani,Marco Aurélioeng2016-12-09T00:00:00Zoai:scielo:S0103-64402016000600664Revistahttps://www.scielo.br/j/bdj/https://old.scielo.br/oai/scielo-oai.phpbdj@forp.usp.br||sergio@fosjc.unesp.br1806-47600103-6440opendoar:2016-12-09T00:00Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)false
dc.title.none.fl_str_mv On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT Assessment
title On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT Assessment
spellingShingle On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT Assessment
De-Deus,Gustavo
Dentinal micro-cracks
micro-CT
root canal preparation
ProTaper Universal
nickel-titanium
title_short On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT Assessment
title_full On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT Assessment
title_fullStr On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT Assessment
title_full_unstemmed On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT Assessment
title_sort On the Causality Between Dentinal Defects and Root Canal Preparation: A Micro-CT Assessment
author De-Deus,Gustavo
author_facet De-Deus,Gustavo
Belladonna,Felipe Gonçalves
Marins,Juliana Roter
Silva,Emmanuel João Nogueira Leal
Neves,Aline de Almeida
Souza,Erick Miranda
Machado,Alessandra de Castro
Lopes,Ricardo Tadeu
Versiani,Marco Aurélio
author_role author
author2 Belladonna,Felipe Gonçalves
Marins,Juliana Roter
Silva,Emmanuel João Nogueira Leal
Neves,Aline de Almeida
Souza,Erick Miranda
Machado,Alessandra de Castro
Lopes,Ricardo Tadeu
Versiani,Marco Aurélio
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv De-Deus,Gustavo
Belladonna,Felipe Gonçalves
Marins,Juliana Roter
Silva,Emmanuel João Nogueira Leal
Neves,Aline de Almeida
Souza,Erick Miranda
Machado,Alessandra de Castro
Lopes,Ricardo Tadeu
Versiani,Marco Aurélio
dc.subject.por.fl_str_mv Dentinal micro-cracks
micro-CT
root canal preparation
ProTaper Universal
nickel-titanium
topic Dentinal micro-cracks
micro-CT
root canal preparation
ProTaper Universal
nickel-titanium
description Abstract This study aimed to evaluate the cause-effect relationship between canal preparation with ProTaper Universal (PTU) system and dentinal defects formation using micro-computed tomography (micro-CT) analysis. Forty mesial canals of mandibular molars with a type II Vertucci's canal configuration were scanned at an isotropic resolution of 14.16 µm. The sample was assigned to an experimental (n = 30) and a control (n = 10) groups, and the mesial canals were prepared with PTU system up to F2 instrument. The specimens from the experimental group were scanned and the cross-section images of the mesial roots, before and after preparation, were screened to identify the presence of dentinal defects. In the control group, the specimens were sectioned perpendicularly to the long axis of the root into 1-mm-thick slices (n = 80) and examined under optical microscope. Once a dentinal defect was detected, the slice was scanned through micro-CT. In the experimental group, dentinal micro-cracks were observed in 4,828 slices (24.04%). In all cross-section images, dentinal defects identified in the postoperative images were already present in the corresponding preoperative image. In the control group, 13 out of 80 slices (16.25%) had at least one dentinal defect visualized under stereomicroscopy, which was identified after a further micro-CT scanning. Micro-CT showed reliability as similar as optical microscopy in detecting dentinal defects, adding the possibility of tracking the dentinal tissue, before and after canal preparation, and providing a clear visualization of micro-cracks. Root canal preparation with PTU system did not induce the formation of new dentinal defects.
publishDate 2016
dc.date.none.fl_str_mv 2016-12-01
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=S0103-64402016000600664
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402016000600664
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0103-6440201601002
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 Fundação Odontológica de Ribeirão Preto
publisher.none.fl_str_mv Fundação Odontológica de Ribeirão Preto
dc.source.none.fl_str_mv Brazilian Dental Journal v.27 n.6 2016
reponame:Brazilian Dental Journal
instname:Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron:FUNORP
instname_str Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron_str FUNORP
institution FUNORP
reponame_str Brazilian Dental Journal
collection Brazilian Dental Journal
repository.name.fl_str_mv Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)
repository.mail.fl_str_mv bdj@forp.usp.br||sergio@fosjc.unesp.br
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