Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments

Detalhes bibliográficos
Autor(a) principal: Sivieri-Araujo,Gustavo
Data de Publicação: 2015
Outros Autores: Tanomaru-Filho,Mario, Guerreiro-Tanomaru,Juliane Maria, Bortoluzzi,Eduardo Antunes, Jorge,Érica Gouveia, Reis,José Maurício dos Santos Nunes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Dental Journal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402015000300211
Resumo: The aim of this study was to evaluate the fracture resistance of simulated immature teeth after different intra-radicular treatments. Crowns and roots of bovine incisors were cut transversally and removed to simulate immature teeth. Root canal preparation and flaring were performed using a bur in crown-apex and apex-crown direction. The samples were distributed into 5 groups (n=10): Positive control (PoC) - no root canal flaring or filling; Negative control (NeC) - teeth were sectioned and their root canals were flared; Direct anatomical glass fiber post (RaP) - #2 Reforpost main glass fiber post relined with composite resin; Double tapered conical glass fiber posts (ExP) - #3 Exacto glass fiber post; and #2 Reforpost main glass fiber + Reforpin accessory glass fiber posts (RrP). In RaP, ExP and RrP, 4.0-mm apical plugs were done with MTA Angelus. The specimens were embedded in polystyrene resin inside cylinders and the periodontal ligament was simulated with a polyether-based impression material. The specimens were submitted to compressive fracture strength test (0.5 mm/min at 135° relative to the long axis of the tooth) in a servo-hydraulic mechanical testing machine MTS 810. Data were subjected to one-way ANOVA and Dunnett's C or Tukey's tests (α=0.05). The control groups (PoC and NeC) showed lower fracture strength than the experimental groups. NeC presented the lowest resistance and ExP presented the highest resistance among the experimental groups. The flaring procedures produced a detrimental effect on the fracture resistance of the bovine teeth. Glass fiber intra-radicular posts increased significantly the fracture resistance of simulated immature teeth.
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spelling Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatmentsendodontically treated teethimmature teethglass fiber postfracture resistanceThe aim of this study was to evaluate the fracture resistance of simulated immature teeth after different intra-radicular treatments. Crowns and roots of bovine incisors were cut transversally and removed to simulate immature teeth. Root canal preparation and flaring were performed using a bur in crown-apex and apex-crown direction. The samples were distributed into 5 groups (n=10): Positive control (PoC) - no root canal flaring or filling; Negative control (NeC) - teeth were sectioned and their root canals were flared; Direct anatomical glass fiber post (RaP) - #2 Reforpost main glass fiber post relined with composite resin; Double tapered conical glass fiber posts (ExP) - #3 Exacto glass fiber post; and #2 Reforpost main glass fiber + Reforpin accessory glass fiber posts (RrP). In RaP, ExP and RrP, 4.0-mm apical plugs were done with MTA Angelus. The specimens were embedded in polystyrene resin inside cylinders and the periodontal ligament was simulated with a polyether-based impression material. The specimens were submitted to compressive fracture strength test (0.5 mm/min at 135° relative to the long axis of the tooth) in a servo-hydraulic mechanical testing machine MTS 810. Data were subjected to one-way ANOVA and Dunnett's C or Tukey's tests (α=0.05). The control groups (PoC and NeC) showed lower fracture strength than the experimental groups. NeC presented the lowest resistance and ExP presented the highest resistance among the experimental groups. The flaring procedures produced a detrimental effect on the fracture resistance of the bovine teeth. Glass fiber intra-radicular posts increased significantly the fracture resistance of simulated immature teeth.Fundação Odontológica de Ribeirão Preto2015-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402015000300211Brazilian Dental Journal v.26 n.3 2015reponame:Brazilian Dental Journalinstname:Fundação Odontológica de Ribeirão Preto (FUNORP)instacron:FUNORP10.1590/0103-6440201300186info:eu-repo/semantics/openAccessSivieri-Araujo,GustavoTanomaru-Filho,MarioGuerreiro-Tanomaru,Juliane MariaBortoluzzi,Eduardo AntunesJorge,Érica GouveiaReis,José Maurício dos Santos Nuneseng2015-07-14T00:00:00Zoai:scielo:S0103-64402015000300211Revistahttps://www.scielo.br/j/bdj/https://old.scielo.br/oai/scielo-oai.phpbdj@forp.usp.br||sergio@fosjc.unesp.br1806-47600103-6440opendoar:2015-07-14T00:00Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)false
dc.title.none.fl_str_mv Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments
title Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments
spellingShingle Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments
Sivieri-Araujo,Gustavo
endodontically treated teeth
immature teeth
glass fiber post
fracture resistance
title_short Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments
title_full Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments
title_fullStr Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments
title_full_unstemmed Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments
title_sort Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments
author Sivieri-Araujo,Gustavo
author_facet Sivieri-Araujo,Gustavo
Tanomaru-Filho,Mario
Guerreiro-Tanomaru,Juliane Maria
Bortoluzzi,Eduardo Antunes
Jorge,Érica Gouveia
Reis,José Maurício dos Santos Nunes
author_role author
author2 Tanomaru-Filho,Mario
Guerreiro-Tanomaru,Juliane Maria
Bortoluzzi,Eduardo Antunes
Jorge,Érica Gouveia
Reis,José Maurício dos Santos Nunes
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Sivieri-Araujo,Gustavo
Tanomaru-Filho,Mario
Guerreiro-Tanomaru,Juliane Maria
Bortoluzzi,Eduardo Antunes
Jorge,Érica Gouveia
Reis,José Maurício dos Santos Nunes
dc.subject.por.fl_str_mv endodontically treated teeth
immature teeth
glass fiber post
fracture resistance
topic endodontically treated teeth
immature teeth
glass fiber post
fracture resistance
description The aim of this study was to evaluate the fracture resistance of simulated immature teeth after different intra-radicular treatments. Crowns and roots of bovine incisors were cut transversally and removed to simulate immature teeth. Root canal preparation and flaring were performed using a bur in crown-apex and apex-crown direction. The samples were distributed into 5 groups (n=10): Positive control (PoC) - no root canal flaring or filling; Negative control (NeC) - teeth were sectioned and their root canals were flared; Direct anatomical glass fiber post (RaP) - #2 Reforpost main glass fiber post relined with composite resin; Double tapered conical glass fiber posts (ExP) - #3 Exacto glass fiber post; and #2 Reforpost main glass fiber + Reforpin accessory glass fiber posts (RrP). In RaP, ExP and RrP, 4.0-mm apical plugs were done with MTA Angelus. The specimens were embedded in polystyrene resin inside cylinders and the periodontal ligament was simulated with a polyether-based impression material. The specimens were submitted to compressive fracture strength test (0.5 mm/min at 135° relative to the long axis of the tooth) in a servo-hydraulic mechanical testing machine MTS 810. Data were subjected to one-way ANOVA and Dunnett's C or Tukey's tests (α=0.05). The control groups (PoC and NeC) showed lower fracture strength than the experimental groups. NeC presented the lowest resistance and ExP presented the highest resistance among the experimental groups. The flaring procedures produced a detrimental effect on the fracture resistance of the bovine teeth. Glass fiber intra-radicular posts increased significantly the fracture resistance of simulated immature teeth.
publishDate 2015
dc.date.none.fl_str_mv 2015-06-01
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=S0103-64402015000300211
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402015000300211
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0103-6440201300186
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 Fundação Odontológica de Ribeirão Preto
publisher.none.fl_str_mv Fundação Odontológica de Ribeirão Preto
dc.source.none.fl_str_mv Brazilian Dental Journal v.26 n.3 2015
reponame:Brazilian Dental Journal
instname:Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron:FUNORP
instname_str Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron_str FUNORP
institution FUNORP
reponame_str Brazilian Dental Journal
collection Brazilian Dental Journal
repository.name.fl_str_mv Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)
repository.mail.fl_str_mv bdj@forp.usp.br||sergio@fosjc.unesp.br
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