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2012, Number 6

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Rev ADM 2012; 69 (6)

Adhesion of composite resins to glass ionomers using nano-fillers

Carvajal M, Ferreto I, Lafuente D

Language: Spanish
References: 36
Page: 277-281
PDF size: 154.64 Kb.


ABSTRACT

Glass ionomer cements are materials used in deep cavities that subsequently have to be restored using composite resin in a technique which requires the use of an acid etchant. This study assessed whether acidetching the glass ionomer affects the shear bond strength of composite resin. Composite resin was bonded to a prefabricated glass ionomer disk made fromVitremer and Ketac N-100. Each group of sample disks was divided in two (n=5): one was etched prior to the placement of the bonding agent and composite, the other was not. Specimens were stored at 37°C for one week prior to their being tested in shear. Bond strength was calculated in megapascals and analyzed with a two-way ANOVA. Means were compared using Scheffe's interval calculated at a 0.05 significance level.
A rough surface produces a more positive effect on the bond strength of composite resin to glass ionomer than does acid-etching the surface. The addition of nano-fill particles tothe glass ionomer composition affects the bond strength of the composite resin to it.


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