Análise da estabilidade de cor e brilho de materiais restauradores de incremento único expostos à diferentes bebidas corantes e ácidas.
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Data
2020-09-18
Autores
Zago, Taísa Freitas [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A inserção de incrementos únicos é uma característica vantajosa no que se refere à redução do tempo de procedimento clínico. Dessa forma, o objetivo deste estudo foi avaliar a estabilidade de cor e brilho de materiais restauradores de incremento único expostos à diferentes bebidas corantes e ácidas. Foram avaliados dois tipos de resina composta, uma de inserção incremental (FT) e outra de incremento único (BK); assim como, dois cimentos ionoméricos de alta viscosidade, um sem cobertura de proteção (KT) e outro com cobertura de proteção com carga nanoparticulada (EQ). Para cada material restaurador foram confeccionados 39 discos (5 mm de diâmetro e 4 mm de espessura), totalizando 156 corpos de prova. Os espécimes foram aleatoriamente divididos em subgrupos para as seguintes imersões: saliva artificial, suco de uva e Coca-Cola. Foi avaliada a alteração de cor e brilho entre os diferentes tipos de materiais, antes e após os desafios propostos. Os dados obtidos para alteração de cor e brilho foram submetidos ao teste de análise de variância dois critérios e o brilho foi avaliado pela análise de variância dois critérios medidas repetidas. Para todas as análises foi realizado o pós-teste de Tukey, com nível de significância de 5%. Com relação aos resultados de cor, a resina FT apresentou maior alteração do que BK, sendo que para saliva o oposto ocorreu. Já para os cimentos ionoméricos, o KT obteve a maior alteração em Coca-cola e o EQ em suco, sendo semelhantes em saliva. Não houve diferença estatística entre as resinas para alteração de brilho, no entanto, KT apresentou maior alteração quando imerso em saliva e Coca-cola. Desse modo conclui-se que a resina composta de inserção única sofreu menos a ação das bebidas corantes e ácidas na alteração de cor; no entanto, para os CIVs o tipo da bebida promoveu alterações de cor distintas para cada CIV. Apesar da cobertura nanoparticulada fornecer proteção adicional ao material restaurador híbrido, o suco avaliado promoveu alta alteração de brilho para ambos os CIVs.
Insertion of single increments is an advantageous feature in reducing the time spent in clinical procedures. The aim of this study was to evaluate the color and gloss stability of single increment restorative materials exposed to different acid beverages. Two types of composite resins were evaluated, one of incremental insertion (FT) and another of single increment (BK); and two high viscosity glass ionomer cements (GIC), one without coat (KT) and another with nanoparticulate coat called hybrid restorative material (EQ). For each restorative material, 39 discs (5 mm/diameter x 4 mm/thickness) were obtained, totaling 156 specimens. The specimens were randomly divided into subgroups for immersions: artificial saliva, grape juice and Coke. The color and gloss changes between the different types of materials was evaluated before and after challenges. Data of color change and gloss difference were subjected to the Two-Way ANOVA and the gloss was evaluated by Two-Way ANOVA Repeated Measures. Tukey's post-test was performed for all analyses with a level of significance at 5%. Regarding the color results, FT resin showed greater change than BK in the staining solutions and KT obtained the highest change in Coke and EQ in juice. There was no statistical difference between resins for gloss change, however, KT showed greater change when immersed in saliva and Coke than EQ. It was concluded that the single increment composite resin suffered less from the action of staining and acidic drinks in the color change; however, the type of beverage promoted distinct color changes for each ionomer. Although the nanoparticulated coat provides additional protection to the hybrid restorative material, the juice evaluated promoted high change in gloss for both ionomers.
Insertion of single increments is an advantageous feature in reducing the time spent in clinical procedures. The aim of this study was to evaluate the color and gloss stability of single increment restorative materials exposed to different acid beverages. Two types of composite resins were evaluated, one of incremental insertion (FT) and another of single increment (BK); and two high viscosity glass ionomer cements (GIC), one without coat (KT) and another with nanoparticulate coat called hybrid restorative material (EQ). For each restorative material, 39 discs (5 mm/diameter x 4 mm/thickness) were obtained, totaling 156 specimens. The specimens were randomly divided into subgroups for immersions: artificial saliva, grape juice and Coke. The color and gloss changes between the different types of materials was evaluated before and after challenges. Data of color change and gloss difference were subjected to the Two-Way ANOVA and the gloss was evaluated by Two-Way ANOVA Repeated Measures. Tukey's post-test was performed for all analyses with a level of significance at 5%. Regarding the color results, FT resin showed greater change than BK in the staining solutions and KT obtained the highest change in Coke and EQ in juice. There was no statistical difference between resins for gloss change, however, KT showed greater change when immersed in saliva and Coke than EQ. It was concluded that the single increment composite resin suffered less from the action of staining and acidic drinks in the color change; however, the type of beverage promoted distinct color changes for each ionomer. Although the nanoparticulated coat provides additional protection to the hybrid restorative material, the juice evaluated promoted high change in gloss for both ionomers.
Descrição
Palavras-chave
Cimentos de ionômeros de vidro, Concentração de íons de hidrogênio, Resinas compostas, Ácidos, Glass ionomer cements