Effectiveness and color stability of non-vital dental bleaching photoactivated by violet LED on blood-stained teeth

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dc.contributor.authorde Almeida, Eran Nair Mesquita [UNESP]
dc.contributor.authorSilva, Aryvelto Miranda
dc.contributor.authorBesegato, João Felipe
dc.contributor.authorde Sousa Gomes Costa, Joatan Lucas [UNESP]
dc.contributor.authorManzoli, Tatiane Miranda [UNESP]
dc.contributor.authorde Andrade, Marcelo Ferrarezi [UNESP]
dc.contributor.authorKuga, Milton Carlos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionFederal University of Juiz de Fora (UFJF)
dc.contributor.institutionUniversidade Federal de Mato Grosso do Sul (UFMS)
dc.date.accessioned2023-07-29T13:41:25Z
dc.date.available2023-07-29T13:41:25Z
dc.date.issued2023-06-01
dc.description.abstractBackground: Few studies have investigated the effect of violet LED irradiation associated or not with bleaching agents on blood-stained teeth. This in vitro study aimed to evaluate the whitening efficacy and color stability of non-vital dental bleaching using 35% hydrogen peroxide (HP) photoactivated with violet LED (VL) compared to 35% HP alone and 35% HP photoactivated with blue LED (BL). Methods: Fifty bovine dental crowns were used to obtain specimens of 5 × 5 × 2 mm. After selection based on a previous colorimetric analysis, the specimens were blood-stained and randomly assigned into five groups (n = 10): control (no treatment); 35% HP, 35% HP/BL; 35% HP/VL; and VL. Three bleaching sessions were performed and the colorimetric analysis (∆Eab, ∆L, and ∆WID) was recorded after 7 days, 30 days, and 9 months of the last bleaching session. Two-way repeated measures ANOVA followed by Bonferroni post-hoc test was used at a significance level of 5%. Results: 35% HP, 35% HP/BL, and 35% HP/VL showed higher values of ∆Eab, ∆L, e ∆WID (P < 0.05), without intra- and intergroup differences (P > 0.05). C and VL were similar in all the evaluation times (P > 0.05), showing lower values of ∆Eab, ∆L, and ∆WID (P < 0.05). Conclusions: 35% HP/VL can be a viable alternative for dental bleaching in endodontically-treated teeth, showing bleaching efficacy similar to 35% HP solely used, even after a 9-month follow-up. VL used alone was not effective to bleach blood-stained teeth.en
dc.description.affiliationDepartment of Restorative Dentistry School of Dentistry Araraquara São Paulo State University – UNESP, SP
dc.description.affiliationDepartment of Dentistry Federal University of Juiz de Fora (UFJF), Campus Governador Valadares, MG
dc.description.affiliationSchool of Dentistry Federal University of Mato Grosso do Sul (UFMS), MS
dc.description.affiliationUnespDepartment of Restorative Dentistry School of Dentistry Araraquara São Paulo State University – UNESP, SP
dc.identifierhttp://dx.doi.org/10.1016/j.pdpdt.2023.103329
dc.identifier.citationPhotodiagnosis and Photodynamic Therapy, v. 42.
dc.identifier.doi10.1016/j.pdpdt.2023.103329
dc.identifier.issn1873-1597
dc.identifier.issn1572-1000
dc.identifier.scopus2-s2.0-85147867359
dc.identifier.urihttp://hdl.handle.net/11449/248347
dc.language.isoeng
dc.relation.ispartofPhotodiagnosis and Photodynamic Therapy
dc.sourceScopus
dc.subjectBlue LED
dc.subjectColor change
dc.subjectDental bleaching
dc.subjectHydrogen peroxide
dc.subjectViolet LED
dc.titleEffectiveness and color stability of non-vital dental bleaching photoactivated by violet LED on blood-stained teethen
dc.typeArtigo
unesp.author.orcid0000-0002-3642-365X[4]

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