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Effectiveness and one-year whiteness stability of different in-office bleaching agents and alternative protocols
dc.contributor.author | Gabardo Perez Mariano da Rocha, Bibiana | |
dc.contributor.author | Ruiz López, Javier | |
dc.contributor.author | Pérez Gómez, María Del Mar | |
dc.contributor.author | Gaidarji, Bruna | |
dc.contributor.author | Teixeira Frasson, Giovanna | |
dc.contributor.author | Brandão Durand, Letícia | |
dc.date.accessioned | 2024-07-30T10:57:53Z | |
dc.date.available | 2024-07-30T10:57:53Z | |
dc.date.issued | 2024-07-08 | |
dc.identifier.uri | https://hdl.handle.net/10481/93635 | |
dc.description.abstract | Statement of problem In-office bleaching has been widely researched. However, few studies have evaluated alternative protocols for this procedure. Moreover, information on the long-term stability of in-office whitening is limited. Purpose The purpose of this in vitro study was to evaluate the effectiveness and 1-year stability of in-office bleaching with 35% hydrogen peroxide (35%HP) and 37% carbamide peroxide (37%CP) using traditional and alternative protocols. Material and methods Forty human third molars were stained with tea and allocated to groups (n=10). Traditional protocols consisted of 3 applications of 35%HP for 15 minutes and 1 application of 37%CP for 45 minutes. Alternative protocols consisted of 1 application of 35%HP for 45 minutes and 3 applications of 37%CP for 45 minutes. Protocols were applied for 3 weeks. CIELab color coordinates were measured at baseline and weekly during treatment and at 1-week, 6-month, and 1-year follow-ups. Effectiveness and stability of the bleaching treatments were interpreted using 50:50% perceptibility and acceptability thresholds. CIELab, chroma, hue angle, and whiteness index were analyzed using the Wilcoxon signed-rank test (α=.05). Results All protocols showed improvement in bleaching after the first week (P≤.005). All bleaching procedures presented excellent whitening outcomes. Alternative protocols showed a larger rebound effect after 1 year, indicating less stability. For the whiteness index, no differences between the completion of the treatments and 1-year follow-up was found for the bleaching treatments and protocols (P>.05), except for the 37%CP alternative protocol (P=.005). Conclusions All tested protocols presented excellent effectiveness in bleaching. Traditional protocols exhibited a greater whiteness stability, while the alternative protocols showed a greater rebound effect after 1 year. Clinical Implications Excellent bleaching effectiveness was observed for all tested protocols using 35% hydrogen peroxide and 37% carbamide peroxide. In addition to the effectiveness of the bleaching, the stability and possibility of a rebound effect should be considered while making treatment decisions. The protocols recommended by the manufacturers for both bleaching agents were more stable, while alternative protocols presented a greater rebound effect after 1 year. | es_ES |
dc.description.sponsorship | Spanish Ministry of Science and Innovation (PID2022.142151OB.I00) | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Bleaching agents | es_ES |
dc.subject | Clinical protocols | es_ES |
dc.subject | Color visual thresholds | es_ES |
dc.subject | Tooth bleaching | es_ES |
dc.subject | Color difference | es_ES |
dc.title | Effectiveness and one-year whiteness stability of different in-office bleaching agents and alternative protocols | es_ES |
dc.type | journal article | es_ES |
dc.rights.accessRights | open access | es_ES |
dc.identifier.doi | 10.1016/j.prosdent.2024.06.011 |