Effect of different torques in cyclic fatigue resistance of K3 rotary instruments
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Brazilian journal of oral sciences (Online) |
Texto Completo: | https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640825 |
Resumo: | Aim: To assess the effect of different torque values on cyclic fatigue resistance of K3 rotary nickeltitanium (NiTi) files. Methods: Eighty K3 files, size 25 mm, taper 0.04 were divided in 4 groups according to different torques (0.5, 1, 2 and 6 Ncm) and were submitted to a cyclic fatigue test. This test was performed with a device that allowed the file to rotate inside a stainless steel artificial curved canal, simulating the pecking motion. Files rotated until fracture occurred and time to failure was recorded in seconds with a stopwatch. Data were analyzed by ANOVA and Tukey tests (p<0.05). Results: All groups were compared and only the group of 6 N.cm showed statistically significant difference (p=0.0002). Conclusions: For #25.04 K3 files, the evaluated torques up to 2 N.cm had no influence on cyclic fatigue resistance. Using 6 N.cm torque value resulted in lower resistance to cyclic fatigue. |
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Brazilian journal of oral sciences (Online) |
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Effect of different torques in cyclic fatigue resistance of K3 rotary instrumentsDental instrumentsEndodonticsFatigueRoot canal preparationTorqueOdontologiaAim: To assess the effect of different torque values on cyclic fatigue resistance of K3 rotary nickeltitanium (NiTi) files. Methods: Eighty K3 files, size 25 mm, taper 0.04 were divided in 4 groups according to different torques (0.5, 1, 2 and 6 Ncm) and were submitted to a cyclic fatigue test. This test was performed with a device that allowed the file to rotate inside a stainless steel artificial curved canal, simulating the pecking motion. Files rotated until fracture occurred and time to failure was recorded in seconds with a stopwatch. Data were analyzed by ANOVA and Tukey tests (p<0.05). Results: All groups were compared and only the group of 6 N.cm showed statistically significant difference (p=0.0002). Conclusions: For #25.04 K3 files, the evaluated torques up to 2 N.cm had no influence on cyclic fatigue resistance. Using 6 N.cm torque value resulted in lower resistance to cyclic fatigue.Universidade Estadual de Campinas2015-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640825Brazilian Journal of Oral Sciences; v. 14 n. 2 (2015): Apr./Jun.; 122-125Brazilian Journal of Oral Sciences; Vol. 14 No. 2 (2015): Apr./Jun.; 122-1251677-3225reponame:Brazilian journal of oral sciences (Online)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPporhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640825/8357Copyright (c) 2015 Dirce Akemi Sacaguti Kawakami, George Táccio de Miranda Candeiro, Eduardo Akisue, Celso Luiz Caldeira, Giulio Gavinihttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessKawakami, Dirce Akemi SacagutiCandeiro, George Táccio de MirandaAkisue, EduardoCaldeira, Celso LuizGavini, Giulio2023-10-02T13:32:43Zoai:ojs.periodicos.sbu.unicamp.br:article/8640825Revistahttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/PUBhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/oaibrjorals@fop.unicamp.br||brjorals@fop.unicamp.br1677-32251677-3217opendoar:2023-10-02T13:32:43Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP)false |
dc.title.none.fl_str_mv |
Effect of different torques in cyclic fatigue resistance of K3 rotary instruments |
title |
Effect of different torques in cyclic fatigue resistance of K3 rotary instruments |
spellingShingle |
Effect of different torques in cyclic fatigue resistance of K3 rotary instruments Kawakami, Dirce Akemi Sacaguti Dental instruments Endodontics Fatigue Root canal preparation Torque Odontologia |
title_short |
Effect of different torques in cyclic fatigue resistance of K3 rotary instruments |
title_full |
Effect of different torques in cyclic fatigue resistance of K3 rotary instruments |
title_fullStr |
Effect of different torques in cyclic fatigue resistance of K3 rotary instruments |
title_full_unstemmed |
Effect of different torques in cyclic fatigue resistance of K3 rotary instruments |
title_sort |
Effect of different torques in cyclic fatigue resistance of K3 rotary instruments |
author |
Kawakami, Dirce Akemi Sacaguti |
author_facet |
Kawakami, Dirce Akemi Sacaguti Candeiro, George Táccio de Miranda Akisue, Eduardo Caldeira, Celso Luiz Gavini, Giulio |
author_role |
author |
author2 |
Candeiro, George Táccio de Miranda Akisue, Eduardo Caldeira, Celso Luiz Gavini, Giulio |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Kawakami, Dirce Akemi Sacaguti Candeiro, George Táccio de Miranda Akisue, Eduardo Caldeira, Celso Luiz Gavini, Giulio |
dc.subject.por.fl_str_mv |
Dental instruments Endodontics Fatigue Root canal preparation Torque Odontologia |
topic |
Dental instruments Endodontics Fatigue Root canal preparation Torque Odontologia |
description |
Aim: To assess the effect of different torque values on cyclic fatigue resistance of K3 rotary nickeltitanium (NiTi) files. Methods: Eighty K3 files, size 25 mm, taper 0.04 were divided in 4 groups according to different torques (0.5, 1, 2 and 6 Ncm) and were submitted to a cyclic fatigue test. This test was performed with a device that allowed the file to rotate inside a stainless steel artificial curved canal, simulating the pecking motion. Files rotated until fracture occurred and time to failure was recorded in seconds with a stopwatch. Data were analyzed by ANOVA and Tukey tests (p<0.05). Results: All groups were compared and only the group of 6 N.cm showed statistically significant difference (p=0.0002). Conclusions: For #25.04 K3 files, the evaluated torques up to 2 N.cm had no influence on cyclic fatigue resistance. Using 6 N.cm torque value resulted in lower resistance to cyclic fatigue. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640825 |
url |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640825 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8640825/8357 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
publisher.none.fl_str_mv |
Universidade Estadual de Campinas |
dc.source.none.fl_str_mv |
Brazilian Journal of Oral Sciences; v. 14 n. 2 (2015): Apr./Jun.; 122-125 Brazilian Journal of Oral Sciences; Vol. 14 No. 2 (2015): Apr./Jun.; 122-125 1677-3225 reponame:Brazilian journal of oral sciences (Online) instname:Universidade Estadual de Campinas (UNICAMP) instacron:UNICAMP |
instname_str |
Universidade Estadual de Campinas (UNICAMP) |
instacron_str |
UNICAMP |
institution |
UNICAMP |
reponame_str |
Brazilian journal of oral sciences (Online) |
collection |
Brazilian journal of oral sciences (Online) |
repository.name.fl_str_mv |
Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP) |
repository.mail.fl_str_mv |
brjorals@fop.unicamp.br||brjorals@fop.unicamp.br |
_version_ |
1800216397680214016 |