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Navegando Dissertação por Autor "Carneiro, Paula Mendes Acatauassú"

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    Influência erosiva do tucupi na resistência da união ao esmalte e dentina
    (Centro Universitário do Estado do Pará, 2020-12-16) Carneiro, Reginna Vyctoria da Trindade Souza de Melo; Loretto, Sandro Cordeiro; Ribeiro, Mara Eliane Soares; http://lattes.cnpq.br/5959446285132739; http://lattes.cnpq.br/6988325260181483; Carneiro, Paula Mendes Acatauassú; http://lattes.cnpq.br/7375951134055063; Souza Junior, Mário Honorato Silva e; http://lattes.cnpq.br/9220706169410814
    The present study evaluated the erosive influence of tucupi on the resistance of the adhesive bond to enamel and dentin. 168 healthy bovine incisors teeth were used, divided into 12 groups (n = 14). For erosive cycling, distilled water (negative control), cola-based soft drink (positive control) and tucupi were used. The adhesive strategies used were: (1) total acid conditioning (conventional) and (2) self-conditioning. All specimens were subjected to cycling with the drinks described above for 5 days and, after 24h of the 5th day, composite resin cylinders were made for the micro shear resistance test. The data showed normal distribution and were analyzed by two-way ANOVA, followed by the Tukey post-test (p≤0.05). There were no significant differences in enamel (p>0.05). In dentin, only the groups exposed to cola-based soft drink showed significant differences (p<0.01). The erosive challenge with tucupi did not influence the bond strength to enamel and dentin, independent of the adhesive strategy used.
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    Influência erosiva do tucupi na resistência de união de interfaces adesivas preestabelecidas em esmalte e dentina
    (Centro Universitário do Estado do Pará, 2022-06-01) Wanderley, Marina Lima; Loretto, Sandro Cordeiro; Ribeiro, Mara Eliane Soares; http://lattes.cnpq.br/5959446285132739; http://lattes.cnpq.br/6988325260181483; Carneiro, Paula Mendes Acatauassú; http://lattes.cnpq.br/7375951134055063; Gatti, Joyce Figueira de Araújo; http://lattes.cnpq.br/0188270217176622
    This study evaluated the erosive influence of tucupi on the bond strength of pre-established adhesive interfaces to enamel and dentin. A total of 168 healthy bovine incisors were used, divided into 12 groups (n=14) according to the type of substrate (enamel or dentin), type of erosive cycling (distilled water, cola soft drink or tucupi), and type of adhesive strategy used (Etch&rinse and self-etch). The groups were: G1: enamel (ESM)+distilled water (H2O)+ Etch&rinse (ER); G2: dentin (DEN)+H2O+ER; G3:ESM+ cola soft drink (RBC) + ER; G4: DEN+RBC+ER; G5: ESM+tucupi (TUC)+ER; G6: DEN + TUC + ER; G7: ESM + H2O + self-etch (SE); G8: DEN + H2O + SE; G9: ESM + RBC + SE; G10: DEN +RBC+ SE; G11: ESM+TUC+SE; G12: DEN+TUC+SE. Cylinders of resin were made on enamel or dentin surfaces and, after 24 hours, the specimens were submitted to erosive cycling for 5 days. After 24 hours of the last cycle, a microshear test was performed. Analysis of fracture was performed using a stereoscopic magnifying glass. The results were submitted to two-way ANOVA, followed by Tukey's post-test, with results described as mean and standard deviation (α=5%). The groups exposed to tucupi showed significantly lower bond strength (p<0.05) in relation to the negative control groups (distilled water), and were statistically similar to the positive control groups (cola soft drink), both in enamel and dentin, for both adhesive strategies used. Therefore, it was possible to conclude that erosive cycling with tucupi influenced the bond strength of pre-established adhesive interfaces in enamel and dentin, regardless of the adhesive strategy.