Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4103/0970-9290.107379 http://hdl.handle.net/11449/73546 |
Resumo: | Aim: Compare the effect of three post designs on the fracture resistance and failure modes of composite core-fiber post-crownless tooth sets. Materials and Methods: Ninety bovine incisors were selected and divided into nine groups of 10 specimens. The teeth were assigned to three groups based on the post design: Cylindrical, tapered, and double-tapered. Each group was subdivided into three subgroups in accordance with the diameter of the post: Small (No.1), medium (No.2), and large (No.3). The Panavia F system was used for post cementation. The specimens were mounted in acrylic resin blocks with a layer of silicone rubber covering the roots. A universal testing machine compressively loaded the specimens from the palatal side at a crosshead speed of 1 mm/min and at an angle of 135I to the long axis of the teeth, until failure occurred. The failure mode was determined by a stereomicroscope inspection of all the specimens. Data were analyzed by one-way ANOVA and the Tukey test (P < 0.05). Results: The fracture resistance was affected by the type of post (P < 0.0001). A narrower diameter for all of the post systems allowed for higher resistance. The main failure mode in the large cylindrical group was catastrophic fractures, while the main failures in the other eight groups were favorable. Conclusion: Narrower diameter posts showed higher fracture resistance. The dominant failure pattern was repairable fracture, except for those with large cylindrical groups. |
id |
UNSP_73764b1d701883dbc1cb3fa426b50f75 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/73546 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber postfiber postFracture strengthpost diameterAim: Compare the effect of three post designs on the fracture resistance and failure modes of composite core-fiber post-crownless tooth sets. Materials and Methods: Ninety bovine incisors were selected and divided into nine groups of 10 specimens. The teeth were assigned to three groups based on the post design: Cylindrical, tapered, and double-tapered. Each group was subdivided into three subgroups in accordance with the diameter of the post: Small (No.1), medium (No.2), and large (No.3). The Panavia F system was used for post cementation. The specimens were mounted in acrylic resin blocks with a layer of silicone rubber covering the roots. A universal testing machine compressively loaded the specimens from the palatal side at a crosshead speed of 1 mm/min and at an angle of 135I to the long axis of the teeth, until failure occurred. The failure mode was determined by a stereomicroscope inspection of all the specimens. Data were analyzed by one-way ANOVA and the Tukey test (P < 0.05). Results: The fracture resistance was affected by the type of post (P < 0.0001). A narrower diameter for all of the post systems allowed for higher resistance. The main failure mode in the large cylindrical group was catastrophic fractures, while the main failures in the other eight groups were favorable. Conclusion: Narrower diameter posts showed higher fracture resistance. The dominant failure pattern was repairable fracture, except for those with large cylindrical groups.Sao Jose Dos Campos Dental School São Paulo State University, São José dos CamposOral Science (Prosthodontic Unit) Faculty of Odontology Federal University of Santa Maria, Santa MariaSao Jose Dos Campos Dental School São Paulo State University, São José dos CamposUniversidade Estadual Paulista (Unesp)Federal University of Santa MariaZogheib, Lucas Villaça [UNESP]Vasconcellos, Luis Gustavo Oliveira [UNESP]Salvia, Ana Carolina Rodrigues Danzi [UNESP]Balducci, Ivan [UNESP]Pagani, Clovis [UNESP]Bottino, Marco Antonio [UNESP]Valandro, Luiz Felipe [UNESP]2014-05-27T11:26:58Z2014-05-27T11:26:58Z2012-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article623-627http://dx.doi.org/10.4103/0970-9290.107379Indian Journal of Dental Research, v. 23, n. 5, p. 623-627, 2012.0970-92901998-3603http://hdl.handle.net/11449/7354610.4103/0970-9290.1073792-s2.0-84875731388513037714431536592344560035636660000-0002-1074-5319Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIndian Journal of Dental Research0,2660,266info:eu-repo/semantics/openAccess2022-03-05T22:12:03Zoai:repositorio.unesp.br:11449/73546Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:23:50.518440Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post |
title |
Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post |
spellingShingle |
Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post Zogheib, Lucas Villaça [UNESP] fiber post Fracture strength post diameter |
title_short |
Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post |
title_full |
Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post |
title_fullStr |
Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post |
title_full_unstemmed |
Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post |
title_sort |
Fracture resistance of bovine incisors restored with different glass fiber posts: Effect of the diameter of fiber post |
author |
Zogheib, Lucas Villaça [UNESP] |
author_facet |
Zogheib, Lucas Villaça [UNESP] Vasconcellos, Luis Gustavo Oliveira [UNESP] Salvia, Ana Carolina Rodrigues Danzi [UNESP] Balducci, Ivan [UNESP] Pagani, Clovis [UNESP] Bottino, Marco Antonio [UNESP] Valandro, Luiz Felipe [UNESP] |
author_role |
author |
author2 |
Vasconcellos, Luis Gustavo Oliveira [UNESP] Salvia, Ana Carolina Rodrigues Danzi [UNESP] Balducci, Ivan [UNESP] Pagani, Clovis [UNESP] Bottino, Marco Antonio [UNESP] Valandro, Luiz Felipe [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Federal University of Santa Maria |
dc.contributor.author.fl_str_mv |
Zogheib, Lucas Villaça [UNESP] Vasconcellos, Luis Gustavo Oliveira [UNESP] Salvia, Ana Carolina Rodrigues Danzi [UNESP] Balducci, Ivan [UNESP] Pagani, Clovis [UNESP] Bottino, Marco Antonio [UNESP] Valandro, Luiz Felipe [UNESP] |
dc.subject.por.fl_str_mv |
fiber post Fracture strength post diameter |
topic |
fiber post Fracture strength post diameter |
description |
Aim: Compare the effect of three post designs on the fracture resistance and failure modes of composite core-fiber post-crownless tooth sets. Materials and Methods: Ninety bovine incisors were selected and divided into nine groups of 10 specimens. The teeth were assigned to three groups based on the post design: Cylindrical, tapered, and double-tapered. Each group was subdivided into three subgroups in accordance with the diameter of the post: Small (No.1), medium (No.2), and large (No.3). The Panavia F system was used for post cementation. The specimens were mounted in acrylic resin blocks with a layer of silicone rubber covering the roots. A universal testing machine compressively loaded the specimens from the palatal side at a crosshead speed of 1 mm/min and at an angle of 135I to the long axis of the teeth, until failure occurred. The failure mode was determined by a stereomicroscope inspection of all the specimens. Data were analyzed by one-way ANOVA and the Tukey test (P < 0.05). Results: The fracture resistance was affected by the type of post (P < 0.0001). A narrower diameter for all of the post systems allowed for higher resistance. The main failure mode in the large cylindrical group was catastrophic fractures, while the main failures in the other eight groups were favorable. Conclusion: Narrower diameter posts showed higher fracture resistance. The dominant failure pattern was repairable fracture, except for those with large cylindrical groups. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09-01 2014-05-27T11:26:58Z 2014-05-27T11:26:58Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4103/0970-9290.107379 Indian Journal of Dental Research, v. 23, n. 5, p. 623-627, 2012. 0970-9290 1998-3603 http://hdl.handle.net/11449/73546 10.4103/0970-9290.107379 2-s2.0-84875731388 5130377144315365 9234456003563666 0000-0002-1074-5319 |
url |
http://dx.doi.org/10.4103/0970-9290.107379 http://hdl.handle.net/11449/73546 |
identifier_str_mv |
Indian Journal of Dental Research, v. 23, n. 5, p. 623-627, 2012. 0970-9290 1998-3603 10.4103/0970-9290.107379 2-s2.0-84875731388 5130377144315365 9234456003563666 0000-0002-1074-5319 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Indian Journal of Dental Research 0,266 0,266 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
623-627 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128927933136896 |