Examinando por Materia "Dental whitening"

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    Whitening effect with 35% hydrogen peroxide and 35% carbamide peroxide on tooth enamel microhardness, in vitro, 2019
    (Universidad Privada Norbert Wiener, 2022-02-11) Valle Buendia, Cris Karen; Girano Castaños, Jorge Alberto
    Objective: The objective of this experimental research work is to determine and compare the whitening effect of hydrogen peroxide at 35% and carbamide peroxide at 35% on enamel microhardness when subjected to the action of these whitening agents. A total of 51 dental samples were used, divided into 3 groups: 1 control group immersed in isotonic saline solution and 2 experimental groups subjected to the whitening agents according to the manufacturer's instructions. The enamel microhardness was measured using a Vickers durometer, considering the microhardness values of the enamel before and after being subjected to the whitening agents. The statistical test used in this study was the student t-test, which showed a highly significant difference (p<0.05) between the enamel microhardness values before and after exposure to the whitening agents. It was also observed that there is a greater decrease in enamel microhardness when samples are exposed to hydrogen peroxide at 35% compared to samples subjected to carbamide peroxide at 35%.