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: Repositório Institucional da UNESP
Texto Completo: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402015000300211&lng=en&nrm=iso&tlng=en
http://hdl.handle.net/11449/127341
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 postRacture 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.O objetivo deste estudo foi avaliar a resistência à fratura de dentes com rizogênese incompleta simulada após diferentes tratamentos intra-radiculares. A rizogênese incompleta foi simulada pelo seccionamento das coroas e raízes de incisivos bovinos. O preparo e alargamento do canal radicular foram realizados utilizando uma broca no sentido coroa-ápice e ápice-coroa. As amostras foram distribuídas (n=10) em cinco grupos: controle positivo (PoC) - sem preparo do canal radicular e sem obturação; controle negativo (NeC) - os dentes foram seccionados e os canais radiculares foram preparados; pino anatômico direto Reforpost #2 (RaP) - pino de fibra de vidro principal + resina composta; pino de fibra de vidro com dupla conicidade (ExP) - pino de fibra de vidro Exacto #3; e pino de fibra de vidro Reforpost #2 + pinos de fibra de vidro acessórios Reforpin (RrP). Nos grupos RaP, ExP e RrP foram realizados plugs apicais de MTA Angelus com 4,0 mm. As amostras foram incluídas em cilindros com resina de poliestireno e o ligamento periodontal foi simulado com material de moldagem à base de poliéter. As amostras foram submetidas ao teste de resistência à fratura, por meio de força compressiva (0,5 mm/min a 135º em relação ao longo eixo do dente) em uma máquina de ensaios mecânicos MTS 810. Os dados foram submetidos à ANOVA a um critério e aos testes para comparações múltiplas Dunnett C ou Tukey HSD (α=0,05). Os grupos controle (PoC e NeC) apresentaram resistência à fratura inferior aos grupos experimentais, sendo o menor valor médio produzido por NeC. ExP produziu os maiores valores de resistência à fratura entre os grupos experimentais. Os procedimentos de preparo e alargamento produziram efeitos prejudiciais na resistência à fratura de dentes bovinos. A utilização de pinos de fibra de vidro intra-radiculares aumentou significativamente a resistência à fratura de dentes com rizogênese incompleta simulada.Universidade Estadual Paulista Department of Dentistry, Araçatuba Dental SchoolUniversidade Estadual Paulista Araraquara Dental School Department of Restorative DentistryUniversidade Federal de Santa Catarina Department of Restorative DentistryUniversidade Estadual Paulista Araraquara Dental School Department of Dental Materials and ProsthodonticsUniversidade Estadual Paulista Department of Dentistry, Araçatuba Dental SchoolUniversidade Estadual Paulista Araraquara Dental School Department of Restorative DentistryUniversidade Estadual Paulista Araraquara Dental School Department of Dental Materials and ProsthodonticsFundação Odontológica de Ribeirão PretoUniversidade Estadual Paulista (Unesp)Universidade Federal de Santa Catarina Department of Restorative DentistrySivieri-araujo, GustavoTanomaru-filho, MarioGuerreiro-tanomaru, Juliane MariaBortoluzzi, Eduardo AntunesJorge, Érica GouveiaReis, José Maurício Dos Santos Nunes2015-08-26T19:19:15Z2015-08-26T19:19:15Z2015-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article211-215application/pdfhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402015000300211&lng=en&nrm=iso&tlng=enBrazilian Dental Journal, v. 26, n. 3, p. 211-215, 2015.0103-6440http://hdl.handle.net/11449/12734110.1590/0103-6440201300186S0103-64402015000300211S0103-64402015000300211.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Dental Journal0,476info:eu-repo/semantics/openAccess2024-09-27T18:03:20Zoai:repositorio.unesp.br:11449/127341Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-27T18:03:20Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)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
Racture 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.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Federal de Santa Catarina Department of Restorative Dentistry
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
Racture resistance
topic Endodontically treated teeth
Immature teeth
Glass fiber post
Racture 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 2015-08-26T19:19:15Z
2015-08-26T19:19:15Z
2015-06-01
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://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402015000300211&lng=en&nrm=iso&tlng=en
Brazilian Dental Journal, v. 26, n. 3, p. 211-215, 2015.
0103-6440
http://hdl.handle.net/11449/127341
10.1590/0103-6440201300186
S0103-64402015000300211
S0103-64402015000300211.pdf
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402015000300211&lng=en&nrm=iso&tlng=en
http://hdl.handle.net/11449/127341
identifier_str_mv Brazilian Dental Journal, v. 26, n. 3, p. 211-215, 2015.
0103-6440
10.1590/0103-6440201300186
S0103-64402015000300211
S0103-64402015000300211.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Dental Journal
0,476
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 211-215
application/pdf
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 SciELO
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 repositoriounesp@unesp.br
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