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Microshear bond strength between restorative composites and resin cements

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Author(s): Rubens Nazareno GARCIA | Mário Fernando de GÓES | Marcelo GIANNINI

Journal: Revista Sul-brasiliera de Odontologia
ISSN 1806-7727

Volume: 5;
Issue: 2;
Start page: 28;
Date: 2008;
Original page

Keywords: restorative composites | resin cements | shear bond strength.

ABSTRACT
Introduction and objective: The techniques of adhesive cementationhave been widely used in dental restoration. The purpose of this studywas to evaluate the microshear bond strength between restorativecomposites and resin cements. Material and methods: Twenty composites blocks were prepared in order to obtain a flat surface, using 600-grid sandpaper. The samples were randomly divided in four groups(n=15) according to the experimental groups: [1] Z250 block + Single Bond + cylinder of RelyX ARC; [2] Z250 block + Single Bond + cylinder of Panavia F; [3] Clearfil AP-X block + Clearfil SE Bond adhesive + cylinder of RelyX ARC; [4] Clearfil AP-X block + Clearfil SE Bond adhesive + cylinder of Panavia F. The adhesive systems and the resin cements were applied according to the experimental groups, using a Tygon matrix.The samples were stored in distilled water at 37±2ºC for 24 hours.Microshear bond strengths were determined using an apparatus attached to an Instron universal testing machine at a crosshead speed of 0.5 mm/minute. Results: The results obtained in MPa (SD) were statistically analyzed (ANOVA and Tukey test, p
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