Microstructural effect of different concentrations of hydrogen peroxide photoactivated with LED/laser

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dc.contributor.authorManzoli, Tatiane Miranda [UNESP]
dc.contributor.authorCosta, Joatan Lucas de Sousa Gomes [UNESP]
dc.contributor.authorBesegato, João Felipe
dc.contributor.authorZaniboni, Joissi Ferrari [UNESP]
dc.contributor.authorGalvani, Lucas David [UNESP]
dc.contributor.authorDantas, Andréa Abi Rached [UNESP]
dc.contributor.authorKuga, Milton Carlos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal de Minas Gerais (UFMG)
dc.contributor.institutionUniversidade Federal de Mato Grosso do Sul (UFMS)
dc.date.accessioned2023-07-29T13:55:52Z
dc.date.available2023-07-29T13:55:52Z
dc.date.issued2023-06-01
dc.description.abstractBackground: The use of different concentrations of hydrogen peroxide (HP) photoactivated with LED/laser sources is common however, their influence on tooth structure is not yet fully elucidated. This study aimed to evaluate the pH, microhardness and surface roughness of different bleaching protocols photoactivated with LED/laser. Methods: Forty bovine incisors were sectioned (7 × 7 × 2 mm) and randomized into four groups for analysis of pH (n = 5), microhardness and roughness (n = 10): HP35, HP6_L, HP15_L, HP35_L. The pH analysis was performed in the initial and final minute of the bleaching protocol. Microhardness and roughness were evaluated before and 7 days after the last bleaching session. Results were obtained from two-way ANOVA for repeated measures and Bonferroni post-test at a significance level of 5%. Results: HP6_L showed higher pH and greater stability between the initial and final evaluations, while the other groups showed similar pH with reduced values in the intragroup evaluation. No differences between groups in microhardness and roughness evaluations were observed. Conclusions: Although HP6_L showed higher alkalinity and pH stability, none of the protocols reduced the microhardness and surface roughness of bovine enamel.en
dc.description.affiliationDepartment of Restorative Dentistry School of Dentistry Araraquara São Paulo State University (UNESP), SP
dc.description.affiliationDepartment of Restorative Dentistry Federal University of Minas Gerais (UFMG), 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.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdCAPES: 88887.464717/2019-00
dc.identifierhttp://dx.doi.org/10.1016/j.pdpdt.2023.103613
dc.identifier.citationPhotodiagnosis and Photodynamic Therapy, v. 42.
dc.identifier.doi10.1016/j.pdpdt.2023.103613
dc.identifier.issn1873-1597
dc.identifier.issn1572-1000
dc.identifier.scopus2-s2.0-85160025263
dc.identifier.urihttp://hdl.handle.net/11449/248867
dc.language.isoeng
dc.relation.ispartofPhotodiagnosis and Photodynamic Therapy
dc.sourceScopus
dc.subjectDental bleaching
dc.subjectHydrogen peroxide
dc.subjectMicrohardness
dc.subjectpH
dc.subjectRoughness
dc.subjectViolet LED
dc.titleMicrostructural effect of different concentrations of hydrogen peroxide photoactivated with LED/laseren
dc.typeArtigo
unesp.author.orcid0000-0002-3642-365X 0000-0002-3642-365X[2]

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Artigos - Odontologia Restauradora - FOAR