Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1807-3107BOR-2021.VOL35.0074 http://hdl.handle.net/11449/222737 |
Resumo: | The aim of this study was to assess the influence of micro-computed tomography (micro-CT) voxel size on dentinal microcrack detection after root canal preparation using rotary heat-treated nickeltitanium files. Curved mesial root canals (n = 24) of mandibular molars were prepared using ProDesign Logic 30/.05 (PDL) or HyFlex EDM 25/.08 (HEDM). The specimens were scanned by micro-CT at 5 µm voxel size before and after root canal preparation. The percentage of microcracks was evaluated in images at 5, 10 and 20 µm voxel size, by two examiners at two moments. The Kappa and McNemar tests (α = 0.05) were used. The percentage of dentinal microcracks was similar before and after PDL and HEDM preparations, at 10 and 20 µm (p> 0.05). HEDM showed a higher percentage of dentinal microcracks in the middle third at 5 µm after preparation (p < 0.05). The detection of dentinal microcracks before and after instrumentation using PDL was more accurate at 5 µm than at 20 µm, in all thirds (p < 0.05). Within the limitations of this ex vivo study, as expected, the results showed that different resolutions influence the micro-CT analysis of microcracks. The highest accuracy in detecting microcracks was observed for analyses performed at 5 µm voxel size. HyFlex EDM caused even more microcracks to develop in the middle third, detectable only by visualization of images made at 5 µm voxel size. |
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Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparationDental Pulp CavityDentinEndodonticsRoot Canal PreparationThe aim of this study was to assess the influence of micro-computed tomography (micro-CT) voxel size on dentinal microcrack detection after root canal preparation using rotary heat-treated nickeltitanium files. Curved mesial root canals (n = 24) of mandibular molars were prepared using ProDesign Logic 30/.05 (PDL) or HyFlex EDM 25/.08 (HEDM). The specimens were scanned by micro-CT at 5 µm voxel size before and after root canal preparation. The percentage of microcracks was evaluated in images at 5, 10 and 20 µm voxel size, by two examiners at two moments. The Kappa and McNemar tests (α = 0.05) were used. The percentage of dentinal microcracks was similar before and after PDL and HEDM preparations, at 10 and 20 µm (p> 0.05). HEDM showed a higher percentage of dentinal microcracks in the middle third at 5 µm after preparation (p < 0.05). The detection of dentinal microcracks before and after instrumentation using PDL was more accurate at 5 µm than at 20 µm, in all thirds (p < 0.05). Within the limitations of this ex vivo study, as expected, the results showed that different resolutions influence the micro-CT analysis of microcracks. The highest accuracy in detecting microcracks was observed for analyses performed at 5 µm voxel size. HyFlex EDM caused even more microcracks to develop in the middle third, detectable only by visualization of images made at 5 µm voxel size.Universidade Estadual Paulista - Unesp School of Dentistry Department of Restorative DentistryUniversidade de São Paulo - USP São Carlos Institute of Physics Department of Physics and Interdisciplinary ScienceUniversidade Estadual Paulista - Unesp School of Dentistry Department of Restorative DentistryUniversidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Pinto, Jáder Camilo [UNESP]Coaguila-Llerena, Hernán [UNESP]Torres, Fernanda Ferrari Esteves [UNESP]Lucas-Oliveira, ÉvertonBA, Tito José BonagamGuerreiro-Tanomaru, Juliane Maria [UNESP]Tanomaru-Filho, Mário [UNESP]2022-04-28T19:46:28Z2022-04-28T19:46:28Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-8http://dx.doi.org/10.1590/1807-3107BOR-2021.VOL35.0074Brazilian Oral Research, v. 35, p. 1-8.1807-31071806-8324http://hdl.handle.net/11449/22273710.1590/1807-3107BOR-2021.VOL35.00742-s2.0-85117945840Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Oral Researchinfo:eu-repo/semantics/openAccess2022-04-28T19:46:28Zoai:repositorio.unesp.br:11449/222737Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:46:28Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation |
title |
Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation |
spellingShingle |
Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation Pinto, Jáder Camilo [UNESP] Dental Pulp Cavity Dentin Endodontics Root Canal Preparation |
title_short |
Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation |
title_full |
Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation |
title_fullStr |
Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation |
title_full_unstemmed |
Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation |
title_sort |
Influence of voxel size on dentinal microcrack detection by micro-CT after root canal preparation |
author |
Pinto, Jáder Camilo [UNESP] |
author_facet |
Pinto, Jáder Camilo [UNESP] Coaguila-Llerena, Hernán [UNESP] Torres, Fernanda Ferrari Esteves [UNESP] Lucas-Oliveira, Éverton BA, Tito José Bonagam Guerreiro-Tanomaru, Juliane Maria [UNESP] Tanomaru-Filho, Mário [UNESP] |
author_role |
author |
author2 |
Coaguila-Llerena, Hernán [UNESP] Torres, Fernanda Ferrari Esteves [UNESP] Lucas-Oliveira, Éverton BA, Tito José Bonagam Guerreiro-Tanomaru, Juliane Maria [UNESP] Tanomaru-Filho, Mário [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Pinto, Jáder Camilo [UNESP] Coaguila-Llerena, Hernán [UNESP] Torres, Fernanda Ferrari Esteves [UNESP] Lucas-Oliveira, Éverton BA, Tito José Bonagam Guerreiro-Tanomaru, Juliane Maria [UNESP] Tanomaru-Filho, Mário [UNESP] |
dc.subject.por.fl_str_mv |
Dental Pulp Cavity Dentin Endodontics Root Canal Preparation |
topic |
Dental Pulp Cavity Dentin Endodontics Root Canal Preparation |
description |
The aim of this study was to assess the influence of micro-computed tomography (micro-CT) voxel size on dentinal microcrack detection after root canal preparation using rotary heat-treated nickeltitanium files. Curved mesial root canals (n = 24) of mandibular molars were prepared using ProDesign Logic 30/.05 (PDL) or HyFlex EDM 25/.08 (HEDM). The specimens were scanned by micro-CT at 5 µm voxel size before and after root canal preparation. The percentage of microcracks was evaluated in images at 5, 10 and 20 µm voxel size, by two examiners at two moments. The Kappa and McNemar tests (α = 0.05) were used. The percentage of dentinal microcracks was similar before and after PDL and HEDM preparations, at 10 and 20 µm (p> 0.05). HEDM showed a higher percentage of dentinal microcracks in the middle third at 5 µm after preparation (p < 0.05). The detection of dentinal microcracks before and after instrumentation using PDL was more accurate at 5 µm than at 20 µm, in all thirds (p < 0.05). Within the limitations of this ex vivo study, as expected, the results showed that different resolutions influence the micro-CT analysis of microcracks. The highest accuracy in detecting microcracks was observed for analyses performed at 5 µm voxel size. HyFlex EDM caused even more microcracks to develop in the middle third, detectable only by visualization of images made at 5 µm voxel size. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-04-28T19:46:28Z 2022-04-28T19:46:28Z |
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://dx.doi.org/10.1590/1807-3107BOR-2021.VOL35.0074 Brazilian Oral Research, v. 35, p. 1-8. 1807-3107 1806-8324 http://hdl.handle.net/11449/222737 10.1590/1807-3107BOR-2021.VOL35.0074 2-s2.0-85117945840 |
url |
http://dx.doi.org/10.1590/1807-3107BOR-2021.VOL35.0074 http://hdl.handle.net/11449/222737 |
identifier_str_mv |
Brazilian Oral Research, v. 35, p. 1-8. 1807-3107 1806-8324 10.1590/1807-3107BOR-2021.VOL35.0074 2-s2.0-85117945840 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Brazilian Oral Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1-8 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
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) |
repository.mail.fl_str_mv |
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1797790364561571840 |