Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of applied oral science (Online) |
Texto Completo: | https://www.revistas.usp.br/jaos/article/view/88463 |
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. |
id |
USP-17_7f5187ce1376f8346fc8ae0882603205 |
---|---|
oai_identifier_str |
oai:revistas.usp.br:article/88463 |
network_acronym_str |
USP-17 |
network_name_str |
Journal of applied oral science (Online) |
repository_id_str |
|
spelling |
Influence of periodontal ligament simulation on bond strength and fracture resistance of roots restored with fiber posts 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. Universidade de São Paulo. Faculdade de Odontologia de Bauru2014-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/jaos/article/view/8846310.1590/1678-775720140067Journal of Applied Oral Science; Vol. 22 No. 5 (2014); 450-458Journal of Applied Oral Science; Vol. 22 Núm. 5 (2014); 450-458Journal of Applied Oral Science; v. 22 n. 5 (2014); 450-4581678-77651678-7757reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/jaos/article/view/88463/91351Copyright (c) 2014 Journal of Applied Oral Scienceinfo:eu-repo/semantics/openAccessMARCHIONATTI, Ana Maria Estivalete WANDSCHER, Vinícius Felipe BROCH, Juliana BERGOLI, César Dalmolin MAIER, Juliana VALANDRO, Luiz Felipe KAIZER, Osvaldo Bazzan 2014-12-05T16:12:39Zoai:revistas.usp.br:article/88463Revistahttp://www.scielo.br/jaosPUBhttps://www.revistas.usp.br/jaos/oai||jaos@usp.br1678-77651678-7757opendoar:2014-12-05T16:12:39Journal 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 |
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 |
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 info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/88463 10.1590/1678-775720140067 |
url |
https://www.revistas.usp.br/jaos/article/view/88463 |
identifier_str_mv |
10.1590/1678-775720140067 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/jaos/article/view/88463/91351 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2014 Journal of Applied Oral Science info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2014 Journal of Applied Oral Science |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
publisher.none.fl_str_mv |
Universidade de São Paulo. Faculdade de Odontologia de Bauru |
dc.source.none.fl_str_mv |
Journal of Applied Oral Science; Vol. 22 No. 5 (2014); 450-458 Journal of Applied Oral Science; Vol. 22 Núm. 5 (2014); 450-458 Journal of Applied Oral Science; v. 22 n. 5 (2014); 450-458 1678-7765 1678-7757 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 |
_version_ |
1800221678674903040 |