Effect Of Adhesive Restoration And Bleaching Technique On The Concentration Of Hydrogen Peroxide In The Pulp Chamber

dc.creatorCavalli
dc.creatorV.; Silva
dc.creatorB. G.; Berger
dc.creatorS. B.; Abuna
dc.creatorG.; Marson
dc.creatorF. C.; Tabchoury
dc.creatorC. P. M.; Giannini
dc.creatorM.
dc.date2017
dc.datemar-abr
dc.date2017-11-13T13:56:53Z
dc.date2017-11-13T13:56:53Z
dc.date.accessioned2018-03-29T06:10:11Z
dc.date.available2018-03-29T06:10:11Z
dc.identifierOperative Dentistry. Operative Dentistry Inc, v. 42, p. E44 - E54, 2017.
dc.identifier0361-7734
dc.identifier1559-2863
dc.identifierWOS:000396092700013
dc.identifier10.2341/16-079-L
dc.identifierhttp://www.jopdentonline.org/doi/abs/10.2341/16-079-L?code=opdt-site
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/329953
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1366978
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionThis study aimed to quantify the concentration of hydrogen peroxide into the pulp chamber in the presence or absence of adhesive enamel restorations and to analyze the resin-dentin interface of bleached groups. Bovine incisors (120) were randomly divided into three groups according to enamel treatment (n=40 each): (1) enamel without restoration (control); (2) enamel cavities (3 mm diameter x 1.5 mm depth) restored with a silorane-based (SB) system; or (3) enamel cavities (3 mm diameter x 1.5 mm depth) restored with a dimethacrylate-based (DB) system. Restorations were thermocycled, and all groups were submitted to one application of 35% hydrogen peroxide (HP) agent for 45 minutes and subjected to four light activation methods (n=10 each): without light, lightemitting diode (LED), LED/diode laser, or halogen light. Acetate buffer solution was placed into the pulp chamber before bleaching, and this solution was collected to spectrophotometrically determine the concentration of HP that reached the pulp chamber after bleaching. Rhodamine B was added to the HP agent and applied on additional enamel samples of each group for 24 hours. Samples were sectioned mesiodistally, and the bleaching agent was traced using confocal microscopy. According to two-way analysis of variance and Tukey test (alpha=0.05), the HP concentration in the pulp chamber of the control group was significantly lower than that of the SB group (p < 0.05), regardless of light activation. No differences were observed between DB and SB groups and between control and DB groups, except for the DB halogen light activated group, which exhibited higher HP intrapulpal concentration (p < 0.05). Confocal microscopy exhibited HP diffusion through the interface of the SB and DB restored groups as well as enamel prisms in the control group. The SB restorative system increased the HP diffusion into the pulp chamber, but HP was able to diffuse even in the absence of enamel restorations.
dc.description42
dc.description2
dc.descriptionE44
dc.descriptionE54
dc.descriptionState of Sao Paulo Research Foundation [2011/17507-5, 2014/22956-1]
dc.descriptionFAPESP, Sao Paulo, Brazil
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageEnglish
dc.publisherOperative Dentistry INC
dc.publisherIndianapolis
dc.relationOperative Dentistry
dc.rightsfechado
dc.sourceWOS
dc.subjectCarbamide Peroxide
dc.subjectMdpc-23 Cells
dc.subjectHuman Enamel
dc.subjectBond Strength
dc.subjectPenetration
dc.subjectSilorane
dc.subjectDentin
dc.subjectAgents
dc.subjectTeeth
dc.subjectGel
dc.titleEffect Of Adhesive Restoration And Bleaching Technique On The Concentration Of Hydrogen Peroxide In The Pulp Chamber
dc.typeArtículos de revistas


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