Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
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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Brazilian Dental Journal |
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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 |
_version_ |
1754204093527621632 |