Effectiveness of violet LED with or without a bleaching gel: a 12-month randomized clinical trial

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorLopes, Ana Cristina Távora de Albuquerque-
Autor(es): dc.creatorBrondino, Nair Cristina Margarido-
Autor(es): dc.creatorBombonatti, Juliana Fraga Soares-
Autor(es): dc.creatorMondelli, Rafael Francisco Lia-
Data de aceite: dc.date.accessioned2025-08-21T18:17:18Z-
Data de disponibilização: dc.date.available2025-08-21T18:17:18Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3389/fdmed.2024.1427301-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/308431-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/308431-
Descrição: dc.descriptionIntroduction: The present interventional, controlled, randomized, blind clinical study aimed to evaluate the effectiveness of an in-office bleaching procedure with violet LED associated or not with 37% carbamide peroxide, considering as response variables the degree of change and color stability over 12 months and dental sensitivity over a month. Methods: Forty participants, according to the inclusion and exclusion criteria, were randomly divided into 2 groups (n = 20) according to the bleaching protocol conducted, in two sessions, with a 7-day interval: vLED—violet LED, without gel; vLED/CP—37% carbamide peroxide photocatalyzed with violet LED (control group). In the vLED group, in each session the bleaching was carried out by 2 consecutive irradiation cycles of 25’ each (10 × 2’ LED + 30” interval), with 5’ interval between cycles. In the vLED/CP group, the gel was applied 5 times in the bleaching session and photocatalyzed 3 times for 2’ with 30” intervals (7’30” per gel application), totaling 37’30” per session. Dental sensitivity was assessed using a visual analog scale (VAS) and the effectiveness of bleaching as a function of the degree of change and color stability (ΔE) with a spectrophotometer. The data were tabulated and submitted to statistical tests (p < 0.05). Results: The VAS analysis showed that some individuals from both groups had mild pain (1 ≤ VAS < 4) during the time intervals evaluated, being more prevalent in the vLED/CP group. Regarding the degree of color change, the groups behaved differently over time (p < 0.0001). The ΔE observed for the vLED/CP group was superior in comparison to the vLED group at all evaluated moments. Conclusions: Over 12 months, the vLED/CP group was more effective in relation to the bleaching effect compared to the vLED group. Both groups showed low levels of sensitivity in the studied time intervals. Clinical Trial Registration: [https://ensaiosclinicos.gov.br/rg/RBR-6rc23h], identifier [U1111-1253-8850].-
Descrição: dc.descriptionDepartment of Operative Dentistry Endodontics and Dental Materials Bauru School of Dentistry University of São Paulo (USP)-
Descrição: dc.descriptionDepartment of Mathematics São Paulo State University (UNESP)-
Descrição: dc.descriptionDepartment of Mathematics São Paulo State University (UNESP)-
Idioma: dc.languageen-
Relação: dc.relationFrontiers in Dental Medicine-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectdental esthetic-
Palavras-chave: dc.subjectin-office tooth bleaching-
Palavras-chave: dc.subjectteeth sensitivity-
Palavras-chave: dc.subjecttooth whitening-
Palavras-chave: dc.subjectviolet LED-
Título: dc.titleEffectiveness of violet LED with or without a bleaching gel: a 12-month randomized clinical trial-
Tipo de arquivo: dc.typelivro digital-
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