Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista odonto ciência (Online) |
DOI: | 10.15448/1980-6523.2017.4.30157 |
Texto Completo: | https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/30157 |
Resumo: | OBJECTIVE: To characterize the nucleus, cutting edge and to detect defects in surfaces of nickeltitanium (NiTi) instruments for endodontic retreatment.METHODS: The selected endodontic instruments (D-RaCe, ProTaper retreatment and Mtwo retreatment) were evaluated prior to their use in 30- and 50-fold magnification in scanning electron microscopy (SEM), for linear measurements of lateral cut edge areas and of the nucleus and the ratio between these measures. After use in simulated canals, faults in the active surface were analyzed by SEM with 30 and 50 times magnification, and 200 times magnification when faults were found. The images were examined by three evaluators, whose measurements were previously calibrated. The defects analyzed were crack, blunt and barb, and data were tabulated for analysis.RESULTS: The instruments studied differed in results. The D-RaCe system instruments had the highest nucleus:edge ratio, while ProTaper retreatment instruments yielded the lowest ratio. All instruments presented some defect, with the instruments Mtwo retreatment presenting two instruments with defects.CONCLUSION: All analyzed instruments presented some type of failure after using them for removal of the filling material of simulated root canals. The D-RaCe system presented the highest edge measurements and the smallest nucleus measurements, contrary to the ProTaper retreatment system, which presented the smallest edge measurements and the largest core measurements. |
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Revista odonto ciência (Online) |
spelling |
Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatmentCaracterização do núcleo, aresta de corte e detecção de falhas em instrumentos de NiTi para retratamento endodônticoelectron scanning microscopyendodonticsretreatment.microscopia eletrônica de varreduraendodontiaretratamento.OBJECTIVE: To characterize the nucleus, cutting edge and to detect defects in surfaces of nickeltitanium (NiTi) instruments for endodontic retreatment.METHODS: The selected endodontic instruments (D-RaCe, ProTaper retreatment and Mtwo retreatment) were evaluated prior to their use in 30- and 50-fold magnification in scanning electron microscopy (SEM), for linear measurements of lateral cut edge areas and of the nucleus and the ratio between these measures. After use in simulated canals, faults in the active surface were analyzed by SEM with 30 and 50 times magnification, and 200 times magnification when faults were found. The images were examined by three evaluators, whose measurements were previously calibrated. The defects analyzed were crack, blunt and barb, and data were tabulated for analysis.RESULTS: The instruments studied differed in results. The D-RaCe system instruments had the highest nucleus:edge ratio, while ProTaper retreatment instruments yielded the lowest ratio. All instruments presented some defect, with the instruments Mtwo retreatment presenting two instruments with defects.CONCLUSION: All analyzed instruments presented some type of failure after using them for removal of the filling material of simulated root canals. The D-RaCe system presented the highest edge measurements and the smallest nucleus measurements, contrary to the ProTaper retreatment system, which presented the smallest edge measurements and the largest core measurements.OBJETIVO: Caracterizar o núcleo, aresta de corte e detectar falhas em superfícies de instrumentos de níqueltitânio (NiTi) para retratamento endodôntico.MÉTODOS: Instrumentos endodônticos (D-RaCe; ProTaper retratamento e Mtwo retratamento) foram mensurados linearmente nas áreas da aresta lateral de corte e do núcleo, além da razão entre estas medidas. Imagens em microscopia eletrônica de varredura (MEV) foram obtidas em aumento de 30 e 50 vezes. Posterior ao uso em canais simulados, estes instrumentos foram novamente analisadas frente as falhas nas superfícies ativas por MEV, em aumentos de 30 e 50 vezes, e 200 vezes. As imagens foram examinadas por três avaliadores, previamente calibrados. Os defeitos analisados incluíram: trinca, embotamento e farpa. Os dados foram tabulados para análise descritiva.RESULTADOS: Os instrumentos estudados apresentaram resultados diferentes entre si. Os instrumentos do sistema D-RaCe apresentaram maior proporção de núcleo/aresta, enquanto os instrumentos ProTaper Retratamento mostraram a menor proporção. Todos os instrumentos apresentaram algum tipo de defeito, sendo que os instrumentos Mtwo Retratamento apresentaram dois instrumentos com defeitos.CONCLUSÃO: Todos os instrumentos apresentaram algum tipo de falha após uso em desobturação de canais radiculares simulados. Os instrumentos do sistema D-RaCe apresentaram as maiores medidas de arestas e as menores medidas de núcleo, ao contrário do sistema ProTaper Retratamento que apresentou as menores medidas de arestas e as maiores medidas de núcleo.EDIPUCRS - Editora Universitária da PUCRS2018-07-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Articleapplication/pdfhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/3015710.15448/1980-6523.2017.4.30157Revista Odonto Ciência; Vol. 32 No. 4 (2017); 193-198Revista Odonto Ciência; v. 32 n. 4 (2017); 193-1981980-65230102-946010.15448/1980-6523.2017.4reponame:Revista odonto ciência (Online)instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSenghttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/30157/17011Copyright (c) 2018 Revista Odonto Ciênciainfo:eu-repo/semantics/openAccessDecurcio, Daniel de AlmeidaSilvaa, Julio AlmeidaBarbosa, Mateus GehrkeChaves, Lucas SilvaLoureiro, Marco Antônio ZaidenEstrela, Carlos2018-07-25T17:43:28Zoai:ojs.revistaseletronicas.pucrs.br:article/30157Revistahttps://revistaseletronicas.pucrs.br/ojs/index.php/foPRIhttps://revistaseletronicas.pucrs.br/ojs/index.php/fo/oai||odontociencia@pucrs.br1980-65230102-9460opendoar:2018-07-25T17:43:28Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false |
dc.title.none.fl_str_mv |
Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment Caracterização do núcleo, aresta de corte e detecção de falhas em instrumentos de NiTi para retratamento endodôntico |
title |
Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment |
spellingShingle |
Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment Decurcio, Daniel de Almeida electron scanning microscopy endodontics retreatment. microscopia eletrônica de varredura endodontia retratamento. Decurcio, Daniel de Almeida electron scanning microscopy endodontics retreatment. microscopia eletrônica de varredura endodontia retratamento. |
title_short |
Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment |
title_full |
Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment |
title_fullStr |
Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment |
title_full_unstemmed |
Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment |
title_sort |
Characterization of the nucleus, cutting edge and failure detection in NiTi instruments for endodontic retreatment |
author |
Decurcio, Daniel de Almeida |
author_facet |
Decurcio, Daniel de Almeida Decurcio, Daniel de Almeida Silvaa, Julio Almeida Barbosa, Mateus Gehrke Chaves, Lucas Silva Loureiro, Marco Antônio Zaiden Estrela, Carlos Silvaa, Julio Almeida Barbosa, Mateus Gehrke Chaves, Lucas Silva Loureiro, Marco Antônio Zaiden Estrela, Carlos |
author_role |
author |
author2 |
Silvaa, Julio Almeida Barbosa, Mateus Gehrke Chaves, Lucas Silva Loureiro, Marco Antônio Zaiden Estrela, Carlos |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Decurcio, Daniel de Almeida Silvaa, Julio Almeida Barbosa, Mateus Gehrke Chaves, Lucas Silva Loureiro, Marco Antônio Zaiden Estrela, Carlos |
dc.subject.por.fl_str_mv |
electron scanning microscopy endodontics retreatment. microscopia eletrônica de varredura endodontia retratamento. |
topic |
electron scanning microscopy endodontics retreatment. microscopia eletrônica de varredura endodontia retratamento. |
description |
OBJECTIVE: To characterize the nucleus, cutting edge and to detect defects in surfaces of nickeltitanium (NiTi) instruments for endodontic retreatment.METHODS: The selected endodontic instruments (D-RaCe, ProTaper retreatment and Mtwo retreatment) were evaluated prior to their use in 30- and 50-fold magnification in scanning electron microscopy (SEM), for linear measurements of lateral cut edge areas and of the nucleus and the ratio between these measures. After use in simulated canals, faults in the active surface were analyzed by SEM with 30 and 50 times magnification, and 200 times magnification when faults were found. The images were examined by three evaluators, whose measurements were previously calibrated. The defects analyzed were crack, blunt and barb, and data were tabulated for analysis.RESULTS: The instruments studied differed in results. The D-RaCe system instruments had the highest nucleus:edge ratio, while ProTaper retreatment instruments yielded the lowest ratio. All instruments presented some defect, with the instruments Mtwo retreatment presenting two instruments with defects.CONCLUSION: All analyzed instruments presented some type of failure after using them for removal of the filling material of simulated root canals. The D-RaCe system presented the highest edge measurements and the smallest nucleus measurements, contrary to the ProTaper retreatment system, which presented the smallest edge measurements and the largest core measurements. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-07-25 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/30157 10.15448/1980-6523.2017.4.30157 |
url |
https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/30157 |
identifier_str_mv |
10.15448/1980-6523.2017.4.30157 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/30157/17011 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Revista Odonto Ciência info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Revista Odonto Ciência |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
EDIPUCRS - Editora Universitária da PUCRS |
publisher.none.fl_str_mv |
EDIPUCRS - Editora Universitária da PUCRS |
dc.source.none.fl_str_mv |
Revista Odonto Ciência; Vol. 32 No. 4 (2017); 193-198 Revista Odonto Ciência; v. 32 n. 4 (2017); 193-198 1980-6523 0102-9460 10.15448/1980-6523.2017.4 reponame:Revista odonto ciência (Online) instname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) instacron:PUC_RS |
instname_str |
Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) |
instacron_str |
PUC_RS |
institution |
PUC_RS |
reponame_str |
Revista odonto ciência (Online) |
collection |
Revista odonto ciência (Online) |
repository.name.fl_str_mv |
Revista odonto ciência (Online) - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) |
repository.mail.fl_str_mv |
||odontociencia@pucrs.br |
_version_ |
1822176235651858432 |
dc.identifier.doi.none.fl_str_mv |
10.15448/1980-6523.2017.4.30157 |