Evaluation of mechanical properties of composite resins with shelf life expired. First test: volumetric shinkrage
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Objective: To evaluate the volumetric shrinkage of different brands of composite resin 6 months after the expiration date, using a video/imaging system (Acuvol, Bisco). Methods: Composite resin increments of approximately 15µL were placed on a teflon pedestal and the initial sample perimeter was checked. After resting for 3 min, the increments were light cured and the perimeter was checked through the video/imaging and a computer software, before and after light-curing. The difference between both measurements was calculated to achieve the volumetric shrinkage percentage. Results: The...
Autores: Rafael Avellar De Carvalho Nunes, Diogo Pedrollo Lise,
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