Abstract
This study aimed to evaluate the effect of beers on the bovine enamel microhardness. Fifty rectangular (1 x 3 x 1 mm–height x width x thickness) enamel specimens were obtained from permanent bovine incisors, and divided into five groups (n = 10) according to the treatment employed: Saliva, Coke, Brahma, Heineken, and Budweiser. Microhardness (Knoop) were obtained before; after 5, 30 and 60 min of immersion in each solution. The data were analyzed using repeated two-way ANOVA and Tukey´s test (p<0.05). Coke decreased the microhardness in all immersion times, and Heineken, showed low values after 60 minutes. Beers tested have low potential to cause enamel erosion when compared to Coke.
Highlights
Tooth erosion is a multifactorial process [1], mainly caused by patient’s diet, which involves the chemical removal of minerals from dental surface, initially from enamel followed by dentin [2]
Among the intrinsic causes of erosion there are the frequent regurgitation of stomach fluids, alimentary disorders, like bulimia and xerostomia or decrease in saliva buffering ability [5]
Alcoholism is a factor that deserves consideration, as a previous study showed that 92% of alcoholics had erosive lesions [6]
Summary
Tooth erosion is a multifactorial process [1], mainly caused by patient’s diet, which involves the chemical removal of minerals from dental surface, initially from enamel followed by dentin [2]. It is defined as an irreversible loss of oral hard tissues due to a chemical dissolution promoted by intrinsic or extrinsic acids, and chelating agents, without involvement of bacteria [3,4]. Tooth erosion usually occurs slowly and without pain, when restricted to enamel, and dental professionals should be aware of lesions first signs, inform the patients of the possible causes and stops the process as soon as possible [7]
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