Effect of post length on endodontically treated teeth: analyses of tensile strength
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/8641615 |
Resumo: | Aim: This study compared the tensile strength of endodontically treated teeth restored with different posts and cores with different post lengths. Methods: Sixty extracted intact canines were randomly divided into 6 groups. Groups CP1, CP2 and CP3 were restored with custom cast postand-core and groups PF1, PF2 and PF3 were restored with prefabricated post and composite resin core, with different combinations of post length of 5,0 mm, 7.5 mm and 10 mm, respectively (n = 10). All teeth were restored with a total metal crown. A tensile loading was applied at a 180- degree angle to the long axis until failure. Results: The 2-way analysis of variance (á=0.05) showed statistically significant difference (p<0.001) among the groups. However, when the mean fracture forces for the groups were compared (Groups 1, 2, 3, 4, 5 and 6: 134.5 N (34.2), 178.9N (40.1), 271,5 N (55.9), 161.7 N (22.0), 216.1 N (42.0) and 257.9 N (41.0), respectively), no significant differences could be detected among the groups restored with prefabricated post and cast post-and-core. It was found significant differences when it was compared the different lengths for each type of post (p<.05). Conclusions: This study showed that increasing post length significantly increased the tensile strength of prefabricated posts and cast post-and-core used in endodontically treated teeth. On the other hand, significant differences were not found when comparing endodontically treated teeth restored with custom cast post-and-cores or pre-fabricated posts and composite resin cores with the same post length. |
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oai:ojs.periodicos.sbu.unicamp.br:article/8641615 |
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UNICAMP-8 |
network_name_str |
Brazilian journal of oral sciences (Online) |
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Effect of post length on endodontically treated teeth: analyses of tensile strengthPost and core techniqueComposite resinTensile strengthOdontologiaAim: This study compared the tensile strength of endodontically treated teeth restored with different posts and cores with different post lengths. Methods: Sixty extracted intact canines were randomly divided into 6 groups. Groups CP1, CP2 and CP3 were restored with custom cast postand-core and groups PF1, PF2 and PF3 were restored with prefabricated post and composite resin core, with different combinations of post length of 5,0 mm, 7.5 mm and 10 mm, respectively (n = 10). All teeth were restored with a total metal crown. A tensile loading was applied at a 180- degree angle to the long axis until failure. Results: The 2-way analysis of variance (á=0.05) showed statistically significant difference (p<0.001) among the groups. However, when the mean fracture forces for the groups were compared (Groups 1, 2, 3, 4, 5 and 6: 134.5 N (34.2), 178.9N (40.1), 271,5 N (55.9), 161.7 N (22.0), 216.1 N (42.0) and 257.9 N (41.0), respectively), no significant differences could be detected among the groups restored with prefabricated post and cast post-and-core. It was found significant differences when it was compared the different lengths for each type of post (p<.05). Conclusions: This study showed that increasing post length significantly increased the tensile strength of prefabricated posts and cast post-and-core used in endodontically treated teeth. On the other hand, significant differences were not found when comparing endodontically treated teeth restored with custom cast post-and-cores or pre-fabricated posts and composite resin cores with the same post length.Universidade Estadual de Campinas2015-11-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/864161510.20396/bjos.v10i4.8641615Brazilian Journal of Oral Sciences; v. 10 n. 4 (2011): Oct./Dec.; 277-281Brazilian Journal of Oral Sciences; Vol. 10 No. 4 (2011): Oct./Dec.; 277-2811677-3225reponame:Brazilian journal of oral sciences (Online)instname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPporhttps://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641615/9114Pereira, Jefferson RicardoValle, Accácio Lins doShiratori, Fábio KenjiGhizoni, Janaina Salomoninfo:eu-repo/semantics/openAccess2016-02-25T09:11:21Zoai:ojs.periodicos.sbu.unicamp.br:article/8641615Revistahttps://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:2016-02-25T09:11:21Brazilian journal of oral sciences (Online) - Universidade Estadual de Campinas (UNICAMP)false |
dc.title.none.fl_str_mv |
Effect of post length on endodontically treated teeth: analyses of tensile strength |
title |
Effect of post length on endodontically treated teeth: analyses of tensile strength |
spellingShingle |
Effect of post length on endodontically treated teeth: analyses of tensile strength Pereira, Jefferson Ricardo Post and core technique Composite resin Tensile strength Odontologia |
title_short |
Effect of post length on endodontically treated teeth: analyses of tensile strength |
title_full |
Effect of post length on endodontically treated teeth: analyses of tensile strength |
title_fullStr |
Effect of post length on endodontically treated teeth: analyses of tensile strength |
title_full_unstemmed |
Effect of post length on endodontically treated teeth: analyses of tensile strength |
title_sort |
Effect of post length on endodontically treated teeth: analyses of tensile strength |
author |
Pereira, Jefferson Ricardo |
author_facet |
Pereira, Jefferson Ricardo Valle, Accácio Lins do Shiratori, Fábio Kenji Ghizoni, Janaina Salomon |
author_role |
author |
author2 |
Valle, Accácio Lins do Shiratori, Fábio Kenji Ghizoni, Janaina Salomon |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Pereira, Jefferson Ricardo Valle, Accácio Lins do Shiratori, Fábio Kenji Ghizoni, Janaina Salomon |
dc.subject.por.fl_str_mv |
Post and core technique Composite resin Tensile strength Odontologia |
topic |
Post and core technique Composite resin Tensile strength Odontologia |
description |
Aim: This study compared the tensile strength of endodontically treated teeth restored with different posts and cores with different post lengths. Methods: Sixty extracted intact canines were randomly divided into 6 groups. Groups CP1, CP2 and CP3 were restored with custom cast postand-core and groups PF1, PF2 and PF3 were restored with prefabricated post and composite resin core, with different combinations of post length of 5,0 mm, 7.5 mm and 10 mm, respectively (n = 10). All teeth were restored with a total metal crown. A tensile loading was applied at a 180- degree angle to the long axis until failure. Results: The 2-way analysis of variance (á=0.05) showed statistically significant difference (p<0.001) among the groups. However, when the mean fracture forces for the groups were compared (Groups 1, 2, 3, 4, 5 and 6: 134.5 N (34.2), 178.9N (40.1), 271,5 N (55.9), 161.7 N (22.0), 216.1 N (42.0) and 257.9 N (41.0), respectively), no significant differences could be detected among the groups restored with prefabricated post and cast post-and-core. It was found significant differences when it was compared the different lengths for each type of post (p<.05). Conclusions: This study showed that increasing post length significantly increased the tensile strength of prefabricated posts and cast post-and-core used in endodontically treated teeth. On the other hand, significant differences were not found when comparing endodontically treated teeth restored with custom cast post-and-cores or pre-fabricated posts and composite resin cores with the same post length. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-11-05 |
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/8641615 10.20396/bjos.v10i4.8641615 |
url |
https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641615 |
identifier_str_mv |
10.20396/bjos.v10i4.8641615 |
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/8641615/9114 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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. 10 n. 4 (2011): Oct./Dec.; 277-281 Brazilian Journal of Oral Sciences; Vol. 10 No. 4 (2011): Oct./Dec.; 277-281 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_ |
1800216399381004288 |