Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements
OBJECTIVE: The purpose of this study was to assess the push-out bond strength of glass fiber posts to root dentin after cementation with glass ionomer (GICs) and resinmodified glass ionomer cements (RMGICs). MATERIAL AND METHODS: Fifty human maxillary canines were transversally sectioned at 15 mm...
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University of São Paulo
2014-10-01
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doaj-03212e30116a46c8819cee8c979812862020-11-24T23:48:44ZengUniversity of São PauloJournal of Applied Oral Science1678-77652014-10-0122539039610.1590/1678-775720130466S1678-77572014000500390Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cementsJefferson Ricardo PEREIRARicardo Abreu da ROSAMarcus Vinícius Reis SÓDaniele AFONSOMilton Carlos KUGAHeitor Marques HONÓRIOAccácio Lins do VALLEHugo Alberto VIDOTTIOBJECTIVE: The purpose of this study was to assess the push-out bond strength of glass fiber posts to root dentin after cementation with glass ionomer (GICs) and resinmodified glass ionomer cements (RMGICs). MATERIAL AND METHODS: Fifty human maxillary canines were transversally sectioned at 15 mm from the apex. Canals were prepared with a step back technique until the application of a #55 K-file and filled. Post spaces were prepared and specimens were divided into five groups according to the cement used for post cementation: Luting & Lining Cement; Fuji II LC Improved; RelyX Luting; Ketac Cem; and Ionoseal. After cementation of the glass fiber posts, all roots were stored at 100% humidity until testing. For push-out test, 1-mm thick slices were produced. The push-out test was performed in a universal testing machine at a crosshead speed of 0.5 mm/minute and the values (MPa) were analyzed by Kolmogorov-Smirnov and Levene's tests and by two-way ANOVA and Tukey's post hoc test at a significance level of 5%. RESULTS: Fiber posts cemented using Luting & Lining Cement, Fuji II LC Improved, and Ketac Cem presented the highest bond strength to root dentin, followed by RelyX Luting. Ionoseal presented the lowest bond strength values (P>0.05). The post level did not influence the bond strength of fiber posts to root dentin (P=0.148). The major cause of failure was cohesive at the cement for all GICs and RMGICs. CONCLUSIONS: Except for Ionoseal, all cements provided satisfactory bond strength values.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572014000500390&lng=en&tlng=enEndodonticsPost and core techniqueDental cementsGlass ionomer cementsShear strength |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jefferson Ricardo PEREIRA Ricardo Abreu da ROSA Marcus Vinícius Reis SÓ Daniele AFONSO Milton Carlos KUGA Heitor Marques HONÓRIO Accácio Lins do VALLE Hugo Alberto VIDOTTI |
spellingShingle |
Jefferson Ricardo PEREIRA Ricardo Abreu da ROSA Marcus Vinícius Reis SÓ Daniele AFONSO Milton Carlos KUGA Heitor Marques HONÓRIO Accácio Lins do VALLE Hugo Alberto VIDOTTI Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements Journal of Applied Oral Science Endodontics Post and core technique Dental cements Glass ionomer cements Shear strength |
author_facet |
Jefferson Ricardo PEREIRA Ricardo Abreu da ROSA Marcus Vinícius Reis SÓ Daniele AFONSO Milton Carlos KUGA Heitor Marques HONÓRIO Accácio Lins do VALLE Hugo Alberto VIDOTTI |
author_sort |
Jefferson Ricardo PEREIRA |
title |
Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements |
title_short |
Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements |
title_full |
Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements |
title_fullStr |
Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements |
title_full_unstemmed |
Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements |
title_sort |
push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements |
publisher |
University of São Paulo |
series |
Journal of Applied Oral Science |
issn |
1678-7765 |
publishDate |
2014-10-01 |
description |
OBJECTIVE: The purpose of this study was to assess the push-out bond strength of glass fiber posts to root dentin after cementation with glass ionomer (GICs) and resinmodified glass ionomer cements (RMGICs). MATERIAL AND METHODS: Fifty human maxillary canines were transversally sectioned at 15 mm from the apex. Canals were prepared with a step back technique until the application of a #55 K-file and filled. Post spaces were prepared and specimens were divided into five groups according to the cement used for post cementation: Luting & Lining Cement; Fuji II LC Improved; RelyX Luting; Ketac Cem; and Ionoseal. After cementation of the glass fiber posts, all roots were stored at 100% humidity until testing. For push-out test, 1-mm thick slices were produced. The push-out test was performed in a universal testing machine at a crosshead speed of 0.5 mm/minute and the values (MPa) were analyzed by Kolmogorov-Smirnov and Levene's tests and by two-way ANOVA and Tukey's post hoc test at a significance level of 5%. RESULTS: Fiber posts cemented using Luting & Lining Cement, Fuji II LC Improved, and Ketac Cem presented the highest bond strength to root dentin, followed by RelyX Luting. Ionoseal presented the lowest bond strength values (P>0.05). The post level did not influence the bond strength of fiber posts to root dentin (P=0.148). The major cause of failure was cohesive at the cement for all GICs and RMGICs. CONCLUSIONS: Except for Ionoseal, all cements provided satisfactory bond strength values. |
topic |
Endodontics Post and core technique Dental cements Glass ionomer cements Shear strength |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572014000500390&lng=en&tlng=en |
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