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Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements

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Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements

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Título Push-out bond strength of fiber posts to root dentin using glass ionomer and resin modified glass ionomer cements
Autor Pereira, Jefferson Ricardo
Rosa, Ricardo Abreu da
Só, Marcus Vinicius Reis
Afonso, Daniele
Kuga, Milton Carlos
Honório, Heitor Marques
Valle, Accácio Lins do
Vidotti, Hugo Alberto
Abstract 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 15mm 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 divide into five groups according to the cement used for post cementation: Luting & Lining Cement; Fuji II LC Improved; RelyX Lutin: Katec Cem; and Ioneseal. 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/min 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 improve, 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.
Contido em Journal of applied oral science. Bauru. Vol. 22, no. 5 (Sept./Oct. 2014), p. 390-396
Assunto Cimentos dentários
Endodontia
Materiais odontologicos
[en] Dental cements
[en] Endodontics
[en] Glass ionomer cements
[en] Post and core technique
[en] Shear strength
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/129459
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