Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | RGO - Revista Gaúcha de Odontologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1981-86372020000100325 |
Resumo: | ABSTRACT Objective The aim of this study was to evaluate and compare the effect of heat treatment at different temperatures on the color and flexibility of nickel-titanium endodontic instruments. Methods Thirty-six nickel-titanium K-file endodontic instruments were divided into six groups and submitted to heat treatment at several temperatures between 450ºC and 750ºC. The color was visually observed. Cantilever-bending tests were performed to measure the flexibility of the instruments. The data were statistically evaluated by one-way analysis of variance and Tukey post hoc comparisons. Results It was observed that the color becomes darker as the heating temperature increases. The flexibility is significantly higher after the heat treatment (P < 0.05). Instruments treated at 650ºC and 750ºC had higher flexibility than those treated at lower temperatures (450ºC, 500ºC and 550ºC) (P < 0.05). Conclusion Heat treatment has a significant effect on the surface color and flexibility of nickel-titanium endodontic instruments. The highest flexibility was observed in instruments heated at 650ºC and 750ºC. |
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RGO - Revista Gaúcha de Odontologia (Online) |
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|
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Influence of heat treatment on color and flexibility of nickel-titanium endodontic instrumentsDental instrumentsHeat treatmentPliabilityABSTRACT Objective The aim of this study was to evaluate and compare the effect of heat treatment at different temperatures on the color and flexibility of nickel-titanium endodontic instruments. Methods Thirty-six nickel-titanium K-file endodontic instruments were divided into six groups and submitted to heat treatment at several temperatures between 450ºC and 750ºC. The color was visually observed. Cantilever-bending tests were performed to measure the flexibility of the instruments. The data were statistically evaluated by one-way analysis of variance and Tukey post hoc comparisons. Results It was observed that the color becomes darker as the heating temperature increases. The flexibility is significantly higher after the heat treatment (P < 0.05). Instruments treated at 650ºC and 750ºC had higher flexibility than those treated at lower temperatures (450ºC, 500ºC and 550ºC) (P < 0.05). Conclusion Heat treatment has a significant effect on the surface color and flexibility of nickel-titanium endodontic instruments. The highest flexibility was observed in instruments heated at 650ºC and 750ºC.Faculdade São Leopoldo Mandic2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1981-86372020000100325RGO - Revista Gaúcha de Odontologia v.68 2020reponame:RGO - Revista Gaúcha de Odontologia (Online)instname:Faculdade São Leopoldo Mandic (FSLM)instacron:FSLM10.1590/1981-86372020000443683info:eu-repo/semantics/openAccessALMEIDA,Bernardo Corrêa deELIAS,Carlos Nelsoneng2020-10-02T00:00:00Zoai:scielo:S1981-86372020000100325Revistahttp://revodonto.bvsalud.org/scielo.php?script=sci_serial&pid=1981-8637&lng=pt&nrm=isohttps://old.scielo.br/oai/scielo-oai.php||contato@revistargo.com.br1981-86370103-6971opendoar:2020-10-02T00:00RGO - Revista Gaúcha de Odontologia (Online) - Faculdade São Leopoldo Mandic (FSLM)false |
dc.title.none.fl_str_mv |
Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments |
title |
Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments |
spellingShingle |
Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments ALMEIDA,Bernardo Corrêa de Dental instruments Heat treatment Pliability |
title_short |
Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments |
title_full |
Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments |
title_fullStr |
Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments |
title_full_unstemmed |
Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments |
title_sort |
Influence of heat treatment on color and flexibility of nickel-titanium endodontic instruments |
author |
ALMEIDA,Bernardo Corrêa de |
author_facet |
ALMEIDA,Bernardo Corrêa de ELIAS,Carlos Nelson |
author_role |
author |
author2 |
ELIAS,Carlos Nelson |
author2_role |
author |
dc.contributor.author.fl_str_mv |
ALMEIDA,Bernardo Corrêa de ELIAS,Carlos Nelson |
dc.subject.por.fl_str_mv |
Dental instruments Heat treatment Pliability |
topic |
Dental instruments Heat treatment Pliability |
description |
ABSTRACT Objective The aim of this study was to evaluate and compare the effect of heat treatment at different temperatures on the color and flexibility of nickel-titanium endodontic instruments. Methods Thirty-six nickel-titanium K-file endodontic instruments were divided into six groups and submitted to heat treatment at several temperatures between 450ºC and 750ºC. The color was visually observed. Cantilever-bending tests were performed to measure the flexibility of the instruments. The data were statistically evaluated by one-way analysis of variance and Tukey post hoc comparisons. Results It was observed that the color becomes darker as the heating temperature increases. The flexibility is significantly higher after the heat treatment (P < 0.05). Instruments treated at 650ºC and 750ºC had higher flexibility than those treated at lower temperatures (450ºC, 500ºC and 550ºC) (P < 0.05). Conclusion Heat treatment has a significant effect on the surface color and flexibility of nickel-titanium endodontic instruments. The highest flexibility was observed in instruments heated at 650ºC and 750ºC. |
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=S1981-86372020000100325 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1981-86372020000100325 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1981-86372020000443683 |
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 |
Faculdade São Leopoldo Mandic |
publisher.none.fl_str_mv |
Faculdade São Leopoldo Mandic |
dc.source.none.fl_str_mv |
RGO - Revista Gaúcha de Odontologia v.68 2020 reponame:RGO - Revista Gaúcha de Odontologia (Online) instname:Faculdade São Leopoldo Mandic (FSLM) instacron:FSLM |
instname_str |
Faculdade São Leopoldo Mandic (FSLM) |
instacron_str |
FSLM |
institution |
FSLM |
reponame_str |
RGO - Revista Gaúcha de Odontologia (Online) |
collection |
RGO - Revista Gaúcha de Odontologia (Online) |
repository.name.fl_str_mv |
RGO - Revista Gaúcha de Odontologia (Online) - Faculdade São Leopoldo Mandic (FSLM) |
repository.mail.fl_str_mv |
||contato@revistargo.com.br |
_version_ |
1754204122471464960 |