ObjectivesThe aim of this study was to evaluate the fluoride release of conventional glass ionomer cements (GICs) and resin-modified GICs.Materials and MethodsThe cements were grouped as follows: G1 (Vidrion R, SS White), G2 (Vitro Fil, DFL), G3 (Vitro Molar, DFL), G4 (Bioglass R, Biodinâmica), and G5 (Ketac Fil, 3M ESPE), as conventional GICs, and G6 (Vitremer, 3M ESPE), G7 (Vitro Fil LC, DFL), and G8 (Resiglass, Biodinâmica) as resin-modified GICs. Six specimens (8.60 mm in diameter; 1.65 mm in thickness) of each material were prepared using a stainless steel mold. The specimens were immersed in a demineralizing solution (pH 4.3) for 6 hr and a remineralizing solution (pH 7.0) for 18 hr a day. The fluoride ions were measured for 15 days. Analysis of variance (ANOVA) and Tukey's test with 5% significance were applied.ResultsThe highest amounts of fluoride release were found during the first 24 hr for all cements, decreasing abruptly on day 2, and reaching gradually decreasing levels on day 7. Based on these results, the decreasing scale of fluoride release was as follows: G2 > G3 > G8 = G4 = G7 > G6 = G1 > G5 (p < 0.05).ConclusionsThere were wide variations among the materials in terms of the cumulative amount of fluoride ion released, and the amount of fluoride release could not be attributed to the category of cement, that is, conventional GICs or resin-modified GICs.

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Uterine curettage is a medical-gynecological procedure whose function is to remove remnants of an abortion, whether spontaneous or induced. In Manaus, as well as data from other public maternities in all of Brazil, most of the abortions occur in young patients and are presumably induced. For this reason, our objective was to present a descriptive analysis of the data on the curettage procedure as well as to highlith the most prevalent age group at the Instituto da mulher Dona Lindu, Manaus-Am in 2014. Despite the continuing need for more research, in order to suggest more effective measures about sexual health education, the findings of the present study that at least half of abortions are induced and occurred in girls aged 14 to 18 years corroborate with most of the research on the subject.