Effect of dental bleaching on the microhardness and surface roughness of sealed composite resins

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dc.creatorRenan Aparecido Fernandes
dc.creatorHenrico Badaoui Strazzi-Sahyon
dc.creatorThaís Yumi Umeda Suzuki
dc.creatorAndré Luiz Fraga Briso
dc.creatorPaulo Henrique dos Santos
dc.date.accessioned2023-04-12T20:27:45Z
dc.date.accessioned2025-09-09T00:28:12Z
dc.date.available2023-04-12T20:27:45Z
dc.date.issued2020-01-10
dc.description.sponsorshipFAPESP - Fundação de Amparo à Pesquisa do Estado de São Paulo
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.5395/rde.2020.45.e12
dc.identifier.issn22347666
dc.identifier.urihttps://hdl.handle.net/1843/51873
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofRestorative Dentistry & Endodontics
dc.rightsAcesso Aberto
dc.subjectComposite resins
dc.subjectHardness
dc.subjectSurface properties
dc.subjectTooth bleaching
dc.subjectTooth
dc.subjectDental enamel
dc.titleEffect of dental bleaching on the microhardness and surface roughness of sealed composite resins
dc.typeArtigo de periódico
local.citation.epage08
local.citation.issue01
local.citation.spage01
local.citation.volume45
local.description.resumoObjectives The aim of this in vitro study was to evaluate the microhardness and surface roughness of composite resins before and after tooth bleaching procedures. Materials and methods Sixty specimens were prepared of each composite resin (Filtek Supreme XT and Opallis), and BisCover LV surface sealant was applied to half of the specimens. Thirty enamel samples were obtained from the buccal and lingual surfaces of human molars for use as the control group. The surface roughness and microhardness were measured before and after bleaching procedures with 35% hydrogen peroxide or 16% carbamide (n = 10). Data were analyzed using 1-way analysis of variance and the Fisher test (α = 0.05). Results Neither hydrogen peroxide nor carbamide peroxide treatment significantly altered the hardness of the composite resins, regardless of surface sealant application; however, both treatments significantly decreased the hardness of the tooth samples (p < 0.05). The bleaching did not cause any change in surface roughness, with the exception of the unsealed Opallis composite resin and dental enamel, both of which displayed an increase in surface roughness after bleaching with carbamide peroxide (p < 0.05). Conclusions The microhardness and surface roughness of enamel and Opallis composite resin were influenced by bleaching procedures
local.publisher.countryBrasil
local.publisher.departmentFAO - DEPARTAMENTO DE ODONTOLOGIA RESTAURADORA
local.publisher.initialsUFMG
local.url.externahttps://europepmc.org/article/MED/32110540#full-text-links

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