Mensuração do potencial erosivo de balas dissolvidas em água e saliva artificial
Measurement of erosive potential of candies dissolved in water and artificial saliva
Bonvini, Brenda; Soares, Ana Keila; Farias, Maria Mercês Aquino Gouveia; Araújo, Silvana Marchiori de; Schmitt, Beatriz Helena Eger
Resumo
Introdução: O consumo excessivo e frequente de balas ácidas pode estar associado à etiologia da erosão dental. Objetivo: Mensurar e comparar o pH e a acidez titulável de balas dissolvidas em água e saliva artificial. Material e método: Foram utilizadas as balas Tic Tac sabores laranja, cereja/maracujá e morango, agrupadas em dois grupos: G-1: balas dissolvidas em água; G-2: balas dissolvidas em saliva artificial. As balas foram trituradas e, do pó resultante de cada sabor, foram pesadas duas amostras de 20 g, sendo então dissolvidas em 120 mL de água destilada ou 120 mL de saliva artificial. Destas soluções, obtiveram-se três amostras de 30 mL para cada um dos sabores, permitindo a leitura em triplicata do pH e da acidez titulável. O pH foi mensurado utilizando-se um potenciômetro e eletrodo combinado de vidro, previamente calibrado com soluções padrão pH 7,0 e pH 4,0. Para a verificação da acidez titulável, adicionaram-se alíquotas de 100 μL NaOH 1M, até o pH alcançar 5,5. Submeteram-se os resultados à Análise de Variância (ANOVA). As comparações das médias foram realizadas pelo Teste Tukey, em um nível de 5% de significância (p<0,05). Resultado: Todas as balas apresentaram pH abaixo do crítico para dissolução do esmalte, quando dissolvidas em água e saliva artificial. Na comparação entre os grupos, o G-2, mostrou um pH mais elevado e menor acidez titulável, diferindo significantemente do G-1. Conclusão: Todas as balas dissolvidas em água e saliva artificial mostraram-se potencialmente erosivas, podendo contribuir para a etiologia da erosão dental.
Palavras-chave
Abstract
Introduction: Excessive and frequent consumption of acid candy is associated with the etiology of dental erosion. Objective: This study aimed to measure and compare the pH and titratable acidity of candies dissolved in water and artificial saliva. Material and method: Tic Tac candies were used with the flavors: orange, cherry / passion fruit and strawberry, grouped into 2 groups. G-1: candies dissolved in water; G-2: candies dissolved in artificial saliva. The candies were crushed and, from the resulting powder of each flavor, two samples were weighed 20 g and dissolved in 120 ml of distilled water or 120 ml of artificial saliva. For these solutions were obtained 3 samples of 30 mL each flavor, allowing the determination of pH and titratable acidity in triplicate.. The pH was measured using a potentiometer and glass electrode calibrated with standard solutions pH 7.0 and pH 4.0. To check the titratable acidity, aliquots of 100 uL NaOH 1M were added until the pH reached 5.5. The results were submitted to the Analysis of Variance (ANOVA). Mean comparisons were performed by Tukey test at a 5% level of significance (p<0.05). Result: All candies had pH below the critical values for dissolution of enamel when dissolved in water and artificial saliva. Comparing the groups, the G-2, showed a pH higher and lower titratable acidity, significantly differing from the G-1. Conclusion: All acid candies dissolved in water and artificial saliva proved to be potentially erosive could contribute to the etiology of dental erosion.
Keywords
References
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