Whitening toothpastes with hydrogen peroxide concentrations vs. at-home bleaching.

Autor: Barbosa LMM; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil., de Souza Carneiro T; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil.; Health Sciences Faculty, IDIBO research group, Rey Juan Carlos University, Alcorcón, Madrid, Spain., Favoreto MW; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil.; School of Dentistry, Tuiuti University of Parana, Curitiba, Paraná, Brazil., Borges CPF; Department of Chemistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil., Reis A; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil., Meireles SS; Department of Restorative Dentistry, School of Dentistry, Federal University of Paraíba, João Pessoa, Paraíba, Brazil., Loguercio AD; Department of Restorative Dentistry, School of Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil. aloguercio@hotmail.com.
Jazyk: angličtina
Zdroj: Clinical oral investigations [Clin Oral Investig] 2024 Jul 20; Vol. 28 (8), pp. 436. Date of Electronic Publication: 2024 Jul 20.
DOI: 10.1007/s00784-024-05823-y
Abstrakt: Objectives: To evaluate the effect of whitening toothpastes with different hydrogen peroxide (HP) concentrations on HP permeability, color change, and physicochemical properties, compared to at-home bleaching treatment.
Materials and Methods: Forty-nine premolars were randomized into seven groups (n = 7): untreated (control); at-home bleaching with 10% carbamide peroxide gel (AH; 10% CP) with 14 and 28 applications of 180 min each (AH [14 × 180 min] and AH [28 × 180 min]); three whitening toothpastes (3% HP; 4% HP and 5% HP) and 10% CP brushed 28 times for 90 s each (TB [28 × 90 s]). HP permeability was measured using a UV-VIS spectrophotometer and color change by a digital spectrophotometer (ΔE ab , ΔE 00 , and ΔWI D ). Initial concentration, pH, and viscosity were measured through titration, digital pH meter, and rheometer, respectively. Statistical analysis included one-way ANOVA, Tukey's test, and Dunnett's test (α = 0.05).
Results: 4% HP group showed acidic pH, the lowest viscosity and the highest HP concentration into the pulp chamber (p < 0.05). The 10% CP groups had lower HP in the pulp chamber and greater color change than other groups (p < 0.05), except the 5% HP group in ΔE ab and ΔE 00 . For ΔWI D , the 10% CP AH groups showed greater whitening than other groups (p < 0.05).
Conclusions: Whitening toothpaste with up to 5% HP resulted in higher HP permeability and less color change compared to 10% CP. Higher HP commercial concentrations in toothpaste increased whitening effect; however, acidic pH toothpastes exhibited greater HP permeability.
Clinical Relevance: Whitening toothpastes with high hydrogen peroxide concentrations were less effective than at-home bleaching, resulting in less color change and greater permeability of hydrogen peroxide, potentially increasing the risk of tooth sensitivity.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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