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Push-out bond strength of fiber posts luted with unfilled resin cement. (Articolo in rivista)

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Push-out bond strength of fiber posts luted with unfilled resin cement. (Articolo in rivista) (literal)

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Carvalho CA, Monticelli F, Cantoro A, Breschi L, Ferrari M. (2009)
Push-out bond strength of fiber posts luted with unfilled resin cement.
in Journal of adhesive dentistry
(literal)

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Push-out bond strength of fiber posts luted with unfilled resin cement. (literal)

Abstract

PURPOSE: The study evaluates the behavior of different adhesive systems and resin cements in fiber post placement, with the intent to clarify the possible role of unfilled resin as a luting material for fiber posts. MATERIALS AND METHODS: Two luting agents (Dual-Link and Unfilled Resin) for cementing fiber posts into root canals were applied either with All-Bond 2 or One-Step Plus, or without an adhesive system, and challenged with the push-out test. Slices of roots restored with posts were loaded until post segment extrusion in the apical-coronal direction. Failure modes were analyzed under SEM. RESULTS: Push-out strength was significantly influenced by the luting agent (p < 0.05), but not by the bonding strategy (p > 0.05). The best results were obtained in combination with Unfilled Resin with One-Step Plus. Dual-Link groups failed mainly cohesively within the cement, while Unfilled Resin demonstrated more adhesive fracture at the post interface. CONCLUSION: The results of this study support the hypothesis that adhesive unfilled resin application is essential for achieving high bond strength to radicular dentin. (literal)

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