Influence of thermal stress on marginal integrity of restorative materials
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , , |
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=S1678-77572008000200005 |
Resumo: | The aim of this study was to evaluate the influence of thermal stress on the marginal integrity of restorative materials with different adhesive and thermal properties. Three hundred and sixty Class V cavities were prepared in buccal and lingual surfaces of 180 bovine incisors. Cervical and incisal walls were located in dentin and enamel, respectively. Specimens were restored with resin composite (RC); glass ionomer (GI) or amalgam (AM), and randomly assigned to 18 groups (n=20) according to the material, number of cycles (500 or 1,000 cycles) and dwell time (30 s or 60 s). Dry and wet specimens served as controls Specimens were immersed in 1% basic fuchsine solution (24 h), sectioned, and microleakage was evaluated under x40 magnification. Data were analyzed by Kruskal-Wallis and Mann-Whitney tests: Thermal cycling regimens increased leakage in all AM restorations (p<0.05) and its effect on RC and GI restorations was only significant when a 60-s dwell time was used (p<0.05). Marginal integrity was more affected in AM restorations under thermal cycling stress, whereas RC and GI ionomer restoration margins were only significantly affected only under longer dwell times. |
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Influence of thermal stress on marginal integrity of restorative materialsThermal cyclingMicroleakageComposite resinsGlass ionomer cementsAmalgamDental materials, propertiesThe aim of this study was to evaluate the influence of thermal stress on the marginal integrity of restorative materials with different adhesive and thermal properties. Three hundred and sixty Class V cavities were prepared in buccal and lingual surfaces of 180 bovine incisors. Cervical and incisal walls were located in dentin and enamel, respectively. Specimens were restored with resin composite (RC); glass ionomer (GI) or amalgam (AM), and randomly assigned to 18 groups (n=20) according to the material, number of cycles (500 or 1,000 cycles) and dwell time (30 s or 60 s). Dry and wet specimens served as controls Specimens were immersed in 1% basic fuchsine solution (24 h), sectioned, and microleakage was evaluated under x40 magnification. Data were analyzed by Kruskal-Wallis and Mann-Whitney tests: Thermal cycling regimens increased leakage in all AM restorations (p<0.05) and its effect on RC and GI restorations was only significant when a 60-s dwell time was used (p<0.05). Marginal integrity was more affected in AM restorations under thermal cycling stress, whereas RC and GI ionomer restoration margins were only significantly affected only under longer dwell times.Faculdade De Odontologia De Bauru - USP2008-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572008000200005Journal of Applied Oral Science v.16 n.2 2008reponame:Journal of applied oral science (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S1678-77572008000200005info:eu-repo/semantics/openAccessCenci,Maximiliano SérgioPereira-Cenci,TatianaDonassollo,Tiago AurélioSommer,LeandroStrapasson,AndréDemarco,Flávio Fernandoeng2008-04-28T00:00:00Zoai:scielo:S1678-77572008000200005Revistahttp://www.scielo.br/jaosPUBhttps://old.scielo.br/oai/scielo-oai.php||jaos@usp.br1678-77651678-7757opendoar:2008-04-28T00:00Journal of applied oral science (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Influence of thermal stress on marginal integrity of restorative materials |
title |
Influence of thermal stress on marginal integrity of restorative materials |
spellingShingle |
Influence of thermal stress on marginal integrity of restorative materials Cenci,Maximiliano Sérgio Thermal cycling Microleakage Composite resins Glass ionomer cements Amalgam Dental materials, properties |
title_short |
Influence of thermal stress on marginal integrity of restorative materials |
title_full |
Influence of thermal stress on marginal integrity of restorative materials |
title_fullStr |
Influence of thermal stress on marginal integrity of restorative materials |
title_full_unstemmed |
Influence of thermal stress on marginal integrity of restorative materials |
title_sort |
Influence of thermal stress on marginal integrity of restorative materials |
author |
Cenci,Maximiliano Sérgio |
author_facet |
Cenci,Maximiliano Sérgio Pereira-Cenci,Tatiana Donassollo,Tiago Aurélio Sommer,Leandro Strapasson,André Demarco,Flávio Fernando |
author_role |
author |
author2 |
Pereira-Cenci,Tatiana Donassollo,Tiago Aurélio Sommer,Leandro Strapasson,André Demarco,Flávio Fernando |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cenci,Maximiliano Sérgio Pereira-Cenci,Tatiana Donassollo,Tiago Aurélio Sommer,Leandro Strapasson,André Demarco,Flávio Fernando |
dc.subject.por.fl_str_mv |
Thermal cycling Microleakage Composite resins Glass ionomer cements Amalgam Dental materials, properties |
topic |
Thermal cycling Microleakage Composite resins Glass ionomer cements Amalgam Dental materials, properties |
description |
The aim of this study was to evaluate the influence of thermal stress on the marginal integrity of restorative materials with different adhesive and thermal properties. Three hundred and sixty Class V cavities were prepared in buccal and lingual surfaces of 180 bovine incisors. Cervical and incisal walls were located in dentin and enamel, respectively. Specimens were restored with resin composite (RC); glass ionomer (GI) or amalgam (AM), and randomly assigned to 18 groups (n=20) according to the material, number of cycles (500 or 1,000 cycles) and dwell time (30 s or 60 s). Dry and wet specimens served as controls Specimens were immersed in 1% basic fuchsine solution (24 h), sectioned, and microleakage was evaluated under x40 magnification. Data were analyzed by Kruskal-Wallis and Mann-Whitney tests: Thermal cycling regimens increased leakage in all AM restorations (p<0.05) and its effect on RC and GI restorations was only significant when a 60-s dwell time was used (p<0.05). Marginal integrity was more affected in AM restorations under thermal cycling stress, whereas RC and GI ionomer restoration margins were only significantly affected only under longer dwell times. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-04-01 |
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=S1678-77572008000200005 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572008000200005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1678-77572008000200005 |
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.16 n.2 2008 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_ |
1748936434836832256 |