Effect of fluoride or chitosan toothpaste and at-home bleaching in enamel roughness, tooth color, and staining susceptibility.

Autor: FRANCISCO VIEIRA-JUNIOR, WALDEMIR, MAGNO LUCON, ALEXANDRE, PAVESI PINI, NÚBIA INOCENCYA, SUGII, MARI MIURA, BAGGIO AGUIAR, FLÁTIO HENRIQUE, NUNES LEITE LIMA, DÉBORA ALVES
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Zdroj: American Journal of Dentistry; Apr2024, Vol. 37 Issue 2, p78-84, 7p
Abstrakt: Purpose: To evaluate how tluoride- or chitosan-based toothpaste used during at-home bleaching affects enamel roughness, tooth color, and staining susceptibility. Methods: Bovine enamel blocks were submitted to a 14-day cycling regime considering a factorial design (bleaching agent x toothpaste, 2 x 3), with n= 10: (1) bleaching with 16% carbamide peroxide (CP) or 6% hydrogen peroxide (HP), and (2) daily exposure of a fluoride (1,450 ppm F-NaF) toothpaste (FT). chitosan-based toothpaste (CBT), or distilled water (control). Then, 24 hours after the last day of bleaching procedure the samples were exposed to a coffee solution. Color (AE.,b, AEoo, L: a*, b*) and roughness (Ra, kim) analyses were performed to compare the samples initially (baseline), after bleaching, and after coffee staining. The results were evaluated by linear models for repeated measures (L: a: b: and Ra), 2-way ANOVA (AE.,b and AEoo) and Tukey's test (a= 0.05). Results: After the at-home bleaching procedure (toothpaste vs. time, P< 0.0001), the toothpaste groups presented a statistically lower Ra than the control (CBT 0.05). After coffee exposure, CBT presented lower AEat, and AEoo values in the H P groups (toothpaste, P< 0.0001), and lower b* and a* values in the CP groups (toothpaste vs. time, P= 0 .004). [ABSTRACT FROM AUTHOR]
Databáze: Supplemental Index