Effects of tooth bleaching protocols with violet LED and hydrogen peroxide on enamel properties

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorCosta, Joatan Lucas de Sousa Gomes-
Autor(es): dc.creatorBesegato, João Felipe-
Autor(es): dc.creatorZaniboni, Joissi Ferrari-
Autor(es): dc.creatorGalvani, Lucas David-
Autor(es): dc.creatorKuga, Milton Carlos-
Data de aceite: dc.date.accessioned2025-08-21T19:44:28Z-
Data de disponibilização: dc.date.available2025-08-21T19:44:28Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.pdpdt.2022.102733-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/230334-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/230334-
Descrição: dc.descriptionBackground: This study evaluated the color change, enamel surface roughness and microhardness after different tooth bleaching protocols, using hydrogen peroxide (HP) and/or violet LED. Methods: Forty bovine specimens (7 × 7 × 2 mm) were randomly distributed into 4 groups: 35% HP, 6% HP, 6% HP + violet LED and violet LED alone. First, the specimens were stained with black tea and then submitted to two bleaching sessions of 30 min with an interval of 7 days. Color change (∆L*, ∆a*, ∆b* and ∆E00) after 24 h of each session and 1 week after the last session was evaluated. Enamel roughness and microhardness were evaluated immediately before the sessions, 24 h and 1 week after the last session. Data were evaluated by ANOVA for repeated measures and Bonferroni post-test or Kruskall-Wallis and Dunn tests (α = 0.05). Representative specimens from each group were analyzed by scanning electron microscopy. Results: 6% HP + violet LED and 35% HP showed the highest color change, while violet LED alone had the lowest results. Enamel roughness analyses showed that 6% HP + violet LED and 35% HP showed changes after two bleaching sessions. No differences were observed regarding enamel microhardness. Conclusions: The use of 6% HP + violet LED showed enhanced bleaching efficacy compared to 35% HP. However, violet LED used alone exhibited the lowest color change. 6% HP + violet LED and 35% HP promoted changes on enamel roughness, while no microhardness changes was observed for any group.-
Descrição: dc.descriptionDepartment of Restorative Dentistry School of Dentistry Araraquara São Paulo State University – UNESP, 1680 Humaitá Street, 3rd floor – Centro, Mail Box: 331-
Descrição: dc.descriptionDepartment of Restorative Dentistry School of Dentistry Araraquara São Paulo State University – UNESP, 1680 Humaitá Street, 3rd floor – Centro, Mail Box: 331-
Idioma: dc.languageen-
Relação: dc.relationPhotodiagnosis and Photodynamic Therapy-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectColor change-
Palavras-chave: dc.subjectHydrogen peroxide-
Palavras-chave: dc.subjectLED-
Palavras-chave: dc.subjectMicrohardness-
Palavras-chave: dc.subjectRoughness-
Palavras-chave: dc.subjectTooth whitening-
Palavras-chave: dc.subjectviolet LED-
Título: dc.titleEffects of tooth bleaching protocols with violet LED and hydrogen peroxide on enamel properties-
Tipo de arquivo: dc.typelivro digital-
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