Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts

Detalhes bibliográficos
Autor(a) principal: MARCHIONATTI,Ana Maria Estivalete
Data de Publicação: 2014
Outros Autores: WANDSCHER,Vinícius Felipe, BROCH,Juliana, BERGOLI,César Dalmolin, MAIER,Juliana, VALANDRO,Luiz Felipe, KAIZER,Osvaldo Bazzan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of applied oral science (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572014000500450
Resumo: Objective: Considering that periodontal ligament simulation may influence the stress distribution over teeth restored with intraradicular retainers, this study aimed to assess the combined effect of mechanical cycling and periodontal ligament simulation on both the bond strength between fiber posts and root dentin and the fracture resistance of teeth restored using glass fiber posts. Material and Methods: Ninety roots were randomly distributed into 3 groups (n=10) (C-MC: control; P-MC: polyether; AS-MC: addition silicone) to test bond strength and 6 groups (n=10) (C: control; P: polyether; AS: addition silicone, without mechanical cycling, and C-MC, P-MC and AS-MC with mechanical cycling) to test fracture strength, according to the material used to simulate the periodontal ligament. For the bond strength test, fiber posts were cemented, cores were built, mechanical cycling was applied (2×106 cycles, 88 N, 2.2 Hz, and 45º incline), and the teeth cut into 3 slices (2 mm), which were then subjected to the push-out test at 1 mm/min. For the fracture strength test, fiber posts were cemented, cores were built, and half of the groups received mechanical cycling, followed by the compressive strength (45° to the long axis and 1 mm/min) performed on all groups. Results: Periodontal ligament simulation did not affect the bond strength (p=0.244) between post and dentin. Simulation of periodontal ligament (p=0.153) and application of mechanical cycling (p=0.97) did not affect fracture resistance. Conclusions: The materials used to simulate the periodontal ligament did not affect fracture or bond strength, therefore periodontal ligament simulation using the tested materials could be considered optional in the conditions of the study.
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spelling Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber postsDental pinsFatigueCompressive strengthDental bonding Objective: Considering that periodontal ligament simulation may influence the stress distribution over teeth restored with intraradicular retainers, this study aimed to assess the combined effect of mechanical cycling and periodontal ligament simulation on both the bond strength between fiber posts and root dentin and the fracture resistance of teeth restored using glass fiber posts. Material and Methods: Ninety roots were randomly distributed into 3 groups (n=10) (C-MC: control; P-MC: polyether; AS-MC: addition silicone) to test bond strength and 6 groups (n=10) (C: control; P: polyether; AS: addition silicone, without mechanical cycling, and C-MC, P-MC and AS-MC with mechanical cycling) to test fracture strength, according to the material used to simulate the periodontal ligament. For the bond strength test, fiber posts were cemented, cores were built, mechanical cycling was applied (2×106 cycles, 88 N, 2.2 Hz, and 45º incline), and the teeth cut into 3 slices (2 mm), which were then subjected to the push-out test at 1 mm/min. For the fracture strength test, fiber posts were cemented, cores were built, and half of the groups received mechanical cycling, followed by the compressive strength (45° to the long axis and 1 mm/min) performed on all groups. Results: Periodontal ligament simulation did not affect the bond strength (p=0.244) between post and dentin. Simulation of periodontal ligament (p=0.153) and application of mechanical cycling (p=0.97) did not affect fracture resistance. Conclusions: The materials used to simulate the periodontal ligament did not affect fracture or bond strength, therefore periodontal ligament simulation using the tested materials could be considered optional in the conditions of the study. Faculdade De Odontologia De Bauru - USP2014-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572014000500450Journal of Applied Oral Science v.22 n.5 2014reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/1678-775720140067info:eu-repo/semantics/openAccessMARCHIONATTI,Ana Maria EstivaleteWANDSCHER,Vinícius FelipeBROCH,JulianaBERGOLI,César DalmolinMAIER,JulianaVALANDRO,Luiz FelipeKAIZER,Osvaldo Bazzaneng2015-01-07T00:00:00Zoai:scielo:S1678-77572014000500450Revistahttp://www.scielo.br/jaosPUBhttps://old.scielo.br/oai/scielo-oai.php||jaos@usp.br1678-77651678-7757opendoar:2015-01-07T00:00Journal of applied oral science (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts
title Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts
spellingShingle Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts
MARCHIONATTI,Ana Maria Estivalete
Dental pins
Fatigue
Compressive strength
Dental bonding
title_short Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts
title_full Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts
title_fullStr Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts
title_full_unstemmed Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts
title_sort Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts
author MARCHIONATTI,Ana Maria Estivalete
author_facet MARCHIONATTI,Ana Maria Estivalete
WANDSCHER,Vinícius Felipe
BROCH,Juliana
BERGOLI,César Dalmolin
MAIER,Juliana
VALANDRO,Luiz Felipe
KAIZER,Osvaldo Bazzan
author_role author
author2 WANDSCHER,Vinícius Felipe
BROCH,Juliana
BERGOLI,César Dalmolin
MAIER,Juliana
VALANDRO,Luiz Felipe
KAIZER,Osvaldo Bazzan
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv MARCHIONATTI,Ana Maria Estivalete
WANDSCHER,Vinícius Felipe
BROCH,Juliana
BERGOLI,César Dalmolin
MAIER,Juliana
VALANDRO,Luiz Felipe
KAIZER,Osvaldo Bazzan
dc.subject.por.fl_str_mv Dental pins
Fatigue
Compressive strength
Dental bonding
topic Dental pins
Fatigue
Compressive strength
Dental bonding
description Objective: Considering that periodontal ligament simulation may influence the stress distribution over teeth restored with intraradicular retainers, this study aimed to assess the combined effect of mechanical cycling and periodontal ligament simulation on both the bond strength between fiber posts and root dentin and the fracture resistance of teeth restored using glass fiber posts. Material and Methods: Ninety roots were randomly distributed into 3 groups (n=10) (C-MC: control; P-MC: polyether; AS-MC: addition silicone) to test bond strength and 6 groups (n=10) (C: control; P: polyether; AS: addition silicone, without mechanical cycling, and C-MC, P-MC and AS-MC with mechanical cycling) to test fracture strength, according to the material used to simulate the periodontal ligament. For the bond strength test, fiber posts were cemented, cores were built, mechanical cycling was applied (2×106 cycles, 88 N, 2.2 Hz, and 45º incline), and the teeth cut into 3 slices (2 mm), which were then subjected to the push-out test at 1 mm/min. For the fracture strength test, fiber posts were cemented, cores were built, and half of the groups received mechanical cycling, followed by the compressive strength (45° to the long axis and 1 mm/min) performed on all groups. Results: Periodontal ligament simulation did not affect the bond strength (p=0.244) between post and dentin. Simulation of periodontal ligament (p=0.153) and application of mechanical cycling (p=0.97) did not affect fracture resistance. Conclusions: The materials used to simulate the periodontal ligament did not affect fracture or bond strength, therefore periodontal ligament simulation using the tested materials could be considered optional in the conditions of the study.
publishDate 2014
dc.date.none.fl_str_mv 2014-10-01
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=S1678-77572014000500450
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572014000500450
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1678-775720140067
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 Faculdade De Odontologia De Bauru - USP
publisher.none.fl_str_mv Faculdade De Odontologia De Bauru - USP
dc.source.none.fl_str_mv Journal of Applied Oral Science v.22 n.5 2014
reponame:Journal of applied oral science (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Journal of applied oral science (Online)
collection Journal of applied oral science (Online)
repository.name.fl_str_mv Journal of applied oral science (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ||jaos@usp.br
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