Efeito das varia??es de pH e do ?cido g?strico na superf?cie de resinas compostas de incremento ?nico

Autor: Somacal, Deise Caren
Jazyk: portugalština
Rok vydání: 2018
Předmět:
Zdroj: Biblioteca Digital de Teses e Dissertações da PUC_RSPontifícia Universidade Católica do Rio Grande do SulPUC_RS.
Druh dokumentu: masterThesis
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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
(Artigo 1 Efeito das varia??es do pH na superf?cie de resinas compostas de incremento ?nico) Aim: To evaluate, in vitro, quantitatively and qualitatively, the effect of pH variations on surface roughness (Ra) and bacterial adhesion (Cn) of Bulk-Fill composite resins followed by simulated toothbrushing. Materials and Methods: Thirty samples of each composite resin were obtained: G1 (control): Z250; G2: Filtek Bulk-Fill (FTK); G3: Tetric N Ceram Bulk-Fill (TTC); G4: Aura Bulk-Fill (AUR). After 24 h, the samples were polished and then alternated by DES/RE solutions for 15 cycles of 24 h each at 37?C. Then, the samples were submitted to simulated toothbrushing. The Ra and Cn measurements were quantitatively analyzed in three stages: after polishing (Ra0 and Cn0), after pH cycles (Ra1 and Cn1) and after simulated toothbrushing (Ra2 and Cn2). Measurements on new samples submitted only to simulated toothbrushing were also performed (Ra* and Cn*). The Ra values were submitted to two-way ANOVA, followed by the Tukey?s test (?=0.05). The Kruskal-Wallis test followed by multiple comparisons was applied for Cn analysis. Surface topography and bacterial adhesion were observed by Scanning Electron Microscopy (SEM). Results: Z250, FTK and TTC showed no significant change in Ra regardless of the treatment performed, except for AUR which obtained superior Ra at Ra2 (p
(Artigo 1 Efeito das varia??es do pH na superf?cie de resinas compostas de incremento ?nico) Objetivo: Avaliar, in vitro, de forma quantitativa e qualitativa, o efeito das varia??es de pH na rugosidade superficial (Ra) e na ades?o bacteriana (Cn) de resinas compostas de incremento ?nico seguido de escova??o simulada. Materiais e M?todos: Trinta amostras de cada resina composta (5mm de largura e 4mm de altura) foram obtidas -G1(controle): Z250; G2: Filtek Bulk-Fill (FTK); G3: Tetric N Ceram Bulk-Fill (TTC); G4: Aura Bulk-Fill (AUR). Ap?s 24 h, as amostras foram polidas e ent?o alternaram por solu??es DES/RE por 15 ciclos de 24 h cada a 37?C. Na sequ?ncia foram submetidas ? escova??o simulada. As medidas Ra e Cn foram analisadas quantitativamente em tr?s etapas: ap?s polimento (Ra0 e Cn0), ap?s ciclos de pH (Ra1 e Cn1) e ap?s escova??o simulada (Ra2 e Cn2). Medi??es em novas amostras submetidas apenas ? escova??o simulada foram realizadas (Ra* e Cn*). Para an?lise dos dados de Ra foi utilizada a ANOVA de dois fatores, seguida do teste de Tukey (?=0,05). O teste de Kruskal-Wallis seguido de compara??es m?ltiplas foi utilizado para an?lise de Cn. A topografia superficial e a ades?o bacteriana foram observadas em Microscopia Eletr?nica de Varredura (MEV). Resultados: Z250, FTK e TTC n?o tiveram altera??o significativa de Ra independente do tratamento realizado, com exce??o da AUR que obteve Ra superior em Ra2 (p
Databáze: Networked Digital Library of Theses & Dissertations
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