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Purpose: To evaluate dentin sealing (DS), micropermeability (MP), and dentin bond strength (BS) of HEMA-free adhesives after 24 h and one year of artificial saliva storage. Materials and Methods: Two HEMA-free (G-ænial Bond and BeautiBond) and All-Bond 3 (the bottle of resin is HEMAfree) adhesives were tested. Adper Single Bond 2, a HEMA-containing adhesive, served as the control. All adhesives were applied according to the manufacturers’ instructions and teeth were prepared for DS (n = 5), MP (n = 5), and BS testing (n = 10). DS under a pulpal pressure of 10 psi was performed at 4 time points (when smear layer was present, after EDTA treatment, after adhesive application, and after 1 year). MP was assessed using pulpal pressure of a 20-cm aqueous dye-solution column and confocal laser scanning microscopy. DS, MP, and BS were performed after 24 h or one-year storage. BS and DS data were statistically analyzed using two-way ANOVA, the Tukey-Kramer test (for BS) and Tukey’s post-hoc test (for DS) (α = 0.05). A qualitative MP assessment was performed by comparing the accumulation of yellow dye within the resin-dentin interface. Results: Adper Single Bond 2 and All-Bond 3 completely sealed the dentin at 24 h and one year. G-ænial Bond showed statistically significant DS reduction of approximately 15% after one year. BeautiBond showed no DS reduction after one year. The resin-dentin interface created using Adper Single Bond 2 and GA showed dye accumulation primarily after one year. The mean BS of All-Bond 3 was statistically significantly higher than that of other adhesives, while G-ænial Bond and BeautiBond showed statistically significantly lower mean bond strengths than did Adper Single Bond 2 and All-Bond 3. After one-year storage, the mean BS was statistically significantly lower only for G-ænial Bond. Conclusion: DS, MP, and BS were not influenced by the absence of HEMA in the tested adhesives. [ABSTRACT FROM AUTHOR]

Purpose: To examine the impact of oral disorders, socioenvironmental factors and subjective perceptions on children's school performance. Materials and Methods: The sample of 515 12-year-old children was randomly selected by conglomerate analysis. The children were clinically evaluated (DMFT index, bleeding on probing and DAI index) and asked to complete the questionnaire about family environment, self-perception of health status, oral health-related quality of life (OHRQoL) and school (questions in Child Perceptions Questionnaire - CPQ11-14). A questionnaire about socioeconomic status and perceptions about their children's health was sent to the parents. School performance was measured. Results: In a multivariate logistic model, the following variables remained statistically significant when associated with adolescents' poor school performance in the fi nal model: number of people living in household, household overcrowding, parental perceptions about their children's oral health, presence of carious lesions and a question from CPQ11-14 about difficulty in paying attention in class because of their teeth, lips, jaws or mouth. Conclusion: The results of this study showed that socioenvironmental factors, subjective perceptions and oral health status of children - particularly carious lesions, have an important impact on school performance, demonstrating the need for planning public health dentistry based on intersectoral public policies. [ABSTRACT FROM AUTHOR]

The aim of this in vitro study was to evaluate the Sorption (Sp) and solubility (SI) of a nanofilled composite (Filtek™ Z350) light-activated from the top in three curing light distances (0 mm, 3 mm and 6 mm) and immersed in three different mouthwashes (Plax Fresh Mint, Plax Alcohol Free, and Plax Whitening). Specimens (6 mm Ø and 1 mm height) were prepared (n = 5) and initially the degree of conversion (DC%) of discs was obtained by using a fourier transform infrared spectrometer. Then, the specimens were placed in a desiccator at 37°C and were weighed until a constant mass (m1) was obtained. The discs were immersed in the mouthwashes for 3O days. Twice a day, the samples were immersed in 2 ml of the mouthwashes (12 hr intervals). After the 30-day period, the discs were reweighed (m2). The reconditioning in the desiccator was done until a constant mass (rri3) was obtained. The data of DC% were analyzed by analysis of variance (ANOVA) in split plots and the results showed statistical difference when photoactivated to 6 mm from the tip of the curing unit. The sorption data were submitted to two-way ANOVA and Tukey's Test at a 5% level of significance and it was observed that a statistical difference (P< 0.05) was only cured when the distance was 6 mm, but there was no difference in sorption between mouthwashes. The solubility data were analyzed by Kruskal-Wallis's Test (P = O.O5) and Dunn's Test, since a non-normal data distribution was observed. The values were negative, which means that there was a mass gain, masking the real solubility. [ABSTRACT FROM AUTHOR]