Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Oral Research |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000400016 |
Resumo: | The core finishing of cast posts-and-cores after luting is routine in dental practice. However, the effects of the vibrations produced by the rotary cutting instruments over the luting cements are not well-documented. This study evaluated the influence of the time intervals that elapsed between the cementation and the core-finishing procedures on the tensile strength of cast posts-and-cores luted with zinc phosphate cement. Forty-eight bovine incisor roots were selected, endodontically treated, and divided into four groups (n = 12): GA, control (without finishing); GB, GC, and GD, subjected to finishing at 20 minutes, 60 minutes, and 24 hours after cementation, respectively. Root canals were molded, and the resin patterns were cast in copper-aluminum alloy. Cast posts-and-cores were luted with zinc phosphate cement, and the core-finishing procedures were applied according to the groups. The tensile tests were performed at a crosshead speed of 0.5 mm/min for all groups, 24 hours after the core-finishing procedures. The data were subjected to one-way analysis of variance (ANOVA) and Tukey's test (α = 0.05). No significant differences were observed in the tensile strengths between the control and experimental groups, regardless of the time interval that elapsed between the luting and finishing steps. Within the limitations of the present study, it was demonstrated that the core-finishing procedures and time intervals that elapsed after luting did not appear to affect the retention of cast posts-and-cores when zinc phosphate cement was used. |
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Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cementDental PolishingPost and Core TechniqueTensile StrengthZinc Phosphate CementThe core finishing of cast posts-and-cores after luting is routine in dental practice. However, the effects of the vibrations produced by the rotary cutting instruments over the luting cements are not well-documented. This study evaluated the influence of the time intervals that elapsed between the cementation and the core-finishing procedures on the tensile strength of cast posts-and-cores luted with zinc phosphate cement. Forty-eight bovine incisor roots were selected, endodontically treated, and divided into four groups (n = 12): GA, control (without finishing); GB, GC, and GD, subjected to finishing at 20 minutes, 60 minutes, and 24 hours after cementation, respectively. Root canals were molded, and the resin patterns were cast in copper-aluminum alloy. Cast posts-and-cores were luted with zinc phosphate cement, and the core-finishing procedures were applied according to the groups. The tensile tests were performed at a crosshead speed of 0.5 mm/min for all groups, 24 hours after the core-finishing procedures. The data were subjected to one-way analysis of variance (ANOVA) and Tukey's test (α = 0.05). No significant differences were observed in the tensile strengths between the control and experimental groups, regardless of the time interval that elapsed between the luting and finishing steps. Within the limitations of the present study, it was demonstrated that the core-finishing procedures and time intervals that elapsed after luting did not appear to affect the retention of cast posts-and-cores when zinc phosphate cement was used.Sociedade Brasileira de Pesquisa Odontológica - SBPqO2012-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000400016Brazilian Oral Research v.26 n.4 2012reponame:Brazilian Oral Researchinstname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO)instacron:SBPQO10.1590/S1806-83242012000400016info:eu-repo/semantics/openAccessIglesias,Michele Andrea LopesMesquita,Gabriela CamposPereira,Analice GiovaniDantas,Lucas Costa de MedeirosRaposo,Luís Henrique AraújoSoares,Carlos JoséMota,Adérito Soares daeng2012-07-10T00:00:00Zoai:scielo:S1806-83242012000400016Revistahttps://www.scielo.br/j/bor/https://old.scielo.br/oai/scielo-oai.phppob@edu.usp.br||bor@sbpqo.org.br1807-31071806-8324opendoar:2012-07-10T00:00Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO)false |
dc.title.none.fl_str_mv |
Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement |
title |
Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement |
spellingShingle |
Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement Iglesias,Michele Andrea Lopes Dental Polishing Post and Core Technique Tensile Strength Zinc Phosphate Cement |
title_short |
Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement |
title_full |
Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement |
title_fullStr |
Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement |
title_full_unstemmed |
Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement |
title_sort |
Influence of core-finishing intervals on tensile strength of cast posts-and-cores luted with zinc phosphate cement |
author |
Iglesias,Michele Andrea Lopes |
author_facet |
Iglesias,Michele Andrea Lopes Mesquita,Gabriela Campos Pereira,Analice Giovani Dantas,Lucas Costa de Medeiros Raposo,Luís Henrique Araújo Soares,Carlos José Mota,Adérito Soares da |
author_role |
author |
author2 |
Mesquita,Gabriela Campos Pereira,Analice Giovani Dantas,Lucas Costa de Medeiros Raposo,Luís Henrique Araújo Soares,Carlos José Mota,Adérito Soares da |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Iglesias,Michele Andrea Lopes Mesquita,Gabriela Campos Pereira,Analice Giovani Dantas,Lucas Costa de Medeiros Raposo,Luís Henrique Araújo Soares,Carlos José Mota,Adérito Soares da |
dc.subject.por.fl_str_mv |
Dental Polishing Post and Core Technique Tensile Strength Zinc Phosphate Cement |
topic |
Dental Polishing Post and Core Technique Tensile Strength Zinc Phosphate Cement |
description |
The core finishing of cast posts-and-cores after luting is routine in dental practice. However, the effects of the vibrations produced by the rotary cutting instruments over the luting cements are not well-documented. This study evaluated the influence of the time intervals that elapsed between the cementation and the core-finishing procedures on the tensile strength of cast posts-and-cores luted with zinc phosphate cement. Forty-eight bovine incisor roots were selected, endodontically treated, and divided into four groups (n = 12): GA, control (without finishing); GB, GC, and GD, subjected to finishing at 20 minutes, 60 minutes, and 24 hours after cementation, respectively. Root canals were molded, and the resin patterns were cast in copper-aluminum alloy. Cast posts-and-cores were luted with zinc phosphate cement, and the core-finishing procedures were applied according to the groups. The tensile tests were performed at a crosshead speed of 0.5 mm/min for all groups, 24 hours after the core-finishing procedures. The data were subjected to one-way analysis of variance (ANOVA) and Tukey's test (α = 0.05). No significant differences were observed in the tensile strengths between the control and experimental groups, regardless of the time interval that elapsed between the luting and finishing steps. Within the limitations of the present study, it was demonstrated that the core-finishing procedures and time intervals that elapsed after luting did not appear to affect the retention of cast posts-and-cores when zinc phosphate cement was used. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-08-01 |
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=S1806-83242012000400016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242012000400016 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1806-83242012000400016 |
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 |
Sociedade Brasileira de Pesquisa Odontológica - SBPqO |
publisher.none.fl_str_mv |
Sociedade Brasileira de Pesquisa Odontológica - SBPqO |
dc.source.none.fl_str_mv |
Brazilian Oral Research v.26 n.4 2012 reponame:Brazilian Oral Research instname:Sociedade Brasileira de Pesquisa Odontológica (SBPqO) instacron:SBPQO |
instname_str |
Sociedade Brasileira de Pesquisa Odontológica (SBPqO) |
instacron_str |
SBPQO |
institution |
SBPQO |
reponame_str |
Brazilian Oral Research |
collection |
Brazilian Oral Research |
repository.name.fl_str_mv |
Brazilian Oral Research - Sociedade Brasileira de Pesquisa Odontológica (SBPqO) |
repository.mail.fl_str_mv |
pob@edu.usp.br||bor@sbpqo.org.br |
_version_ |
1750318322908397568 |