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Effect of post-cure heating on the flexural strength of two indirect resin composites
Maurizio Sedda1, Federica Papacchini, Paolo Salonna
1Dipartimento di Scienze Odontostomatologiche, Policlinico Le Scotte, Viale Bracci, Siena, Italy. maurizio.sedda@gmail.com
Abstract:
The aim of this study was to evaluate whether a post-cure heat-treatment may improve the flexural strength of two indirect resin-based composites. Tested factors were: material (Gradia Indirect, Gradia Forte), mass (opaqus dentin, dentin, enamel) and curing mode (light, light and heat). A three-point bending test appliance was developed according to ISO 4049/2000. Three-Way ANOVA and 2-Pameter Weibull cumulative distribution function were performed. Factors material and curing mode were significant (p < 0.001), while the mass type was not (p = 0.181). A post-cure heat treatment may be useful for enhancing the flexural strength of both materials.
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