Effect of whitening dentifrices containing hydrogen peroxide or carbamide peroxide, in bond adhesion to dental enamel

Flávio Warol, Angela Scarparo, Fernanda Signorelli Calazans, Roberta Barcelos, Marcos de Oliveira Barceleiro

This study evaluated the effect of whitening dentifrices on the microshear bond strength ( CM) to the dental enamel at different times elapsed after the completion of the whitening protocol. Thirty samples from 15 third molars were divided into six groups: G1 and G4 (Crest baking soda & peroxide), G2 and G5 (Optic White), and G3 and G6 (Colgate Total 12). Samples were submitted to mechanical brushing test in 3 daily brushing sessions of 3 minutes each, for 15 days. Teeth were restored immediately (G1, G2 and G3) and 15 days (G4, G5 and G6) after bleaching, and then submitted to the CM test. Data were analyzed by ANOVA and Tukey tests (p < 0.05). G1 and G4 presented lower CM values, however, restorations performed immediately or 15 days after the brushing period presented similar CM values (p < 0.05), regardless of dentifrice. It could be concluded that the use of these dentifrices did not compromise the bond strength in both evaluation times.

Keywords: Dental enamel. Tooth whitening. Dentifrice. Bond. Carbamide peroxide. Hydrogen peroxide. Microshear.

How to cite: Warol F, Scarparo A, Calazans FS, Barcelos R, Barceleiro MO. Effect of whitening dentifrices containing hydrogen peroxide or carbamide peroxide, in bond adhesion to dental enamel. J Clin Dent Res. 2018 May-Aug;15(2):100-8. DOI: https://doi.org/10.14436/2447-911x.15.2.100-108.oar

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