Abstract

SCHMITT, Vera Lúcia et al. Sorption and solubility assessment of a resin composite in different liquids. Odontol. Clín.-Cient. (Online) [online]. 2011, vol.10, n.3, pp. 265-269. ISSN 1677-3888.

This study evaluated the sorption and solubility of resin composite nanoparticle in three different liquid : distilled water, Coca-Cola ® and ethanol / water at 75%, according two periods of stores: 7 and 15 days. We prepared 30 specimens, packed in plastic container containing silica gel blue dehydrated and taken to an incubator at 37 ° C for 24 hours. Following, we weighed in analytical balance, and repeated until achieving constant mass (m1) on every 24 hour period. By getting the m1, the specimens were been divided into six groups and stored separately in 5 mL of each solution. Three groups were been maintained for 7 days and the other three for 15 days. After the storage period, the specimens were removed, washed, dried, weighed to obtain a second measure of mass, called m2. The specimens was reconditioned at 37 ° C. Mass measurements were performed during dehydration, every 24 hours, getting the dough reconditioned, with constant value of mass, called m3. The Data from sorption and solubility, we calculated and subjected to statistical analysis. The composite resin Filtek Z350 was found to be resistant to chemical degradation in acid and aqueous, but was susceptible to degradation when immersed in a solution of ethanol / water at 75%, with solubility, no statistical difference between the periods of storage.

Keywords : Composite resin; Solubility; Physicol Properties..