Characterization of low-cost Brazilian resin composites submitted to tooth brushing

This in vitro study aimed to evaluate surface microhardness, roughness, color, gloss and topography of low-cost Brazilian resin composites, compared with an international one. All 120 samples (8mm ø x 2mm height) were prepared divided into 5 groups: Ultrafill (Biodinâmica), Llis (FGM), Fill Magic (Coltene), Applic (Makira), Filtek Z250XT (3M Oral Care). Surface microhardness (KHN) (n=10) was analyzed at two time periods: before after simulated tooth brushing (STB). Other standardized each group for roughness (Ra), color (?L, ?a, ?b, ?E, ?E00) unit (GU) the same periods. The non-brushed brushed (n=4) evaluated by scanning electron microscopy. Data statistically two-way repeated measures ANOVA Bonferroni post-hoc test (KHN, Ra, GU), one-way Tukey (?=0.05). Topographic images submitted descriptive analysis. composites investigated one revealed: lower KHN, regardless or STB; similar Ra STB, except Ultrafill, which presented higher values; change ?L, ?b parameters; ?E00 parameters, Magic, values. In a situation scarce resources, might be acceptable cost-effective restorative alternative.