Effect of post length on endodontically treated teeth: analyses of tensile strength

Detalhes bibliográficos
Autor(a) principal: Pereira, Jefferson Ricardo
Data de Publicação: 2015
Outros Autores: Valle, Accácio Lins do, Shiratori, Fábio Kenji, Ghizoni, Janaina Salomon
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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spelling 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
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