INTRAPULPAL TEMPERATURE VARIATION DURING BLEACHING WITH VARIOUS ACTIVATION MECHANISMS

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dc.contributor.authorde Araujo Michida, Silvia Masae [UNESP]
dc.contributor.authorPassos, Sheila Pestana [UNESP]
dc.contributor.authorKimie Marimoto, Angela Regina [UNESP]
dc.contributor.authorValera Garakis, Marcia Carneiro [UNESP]
dc.contributor.authorMaximo de Araujo, Maria Amelia [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:04:59Z
dc.date.available2014-05-20T14:04:59Z
dc.date.issued2009-09-01
dc.description.abstractObjectives: The aim of this study was to evaluate the intrapulpal temperature variation after bleaching treatment with 35% hydrogen peroxide using different sources of activation. Material and Methods: Twenty-four human teeth were sectioned in the mesiodistal direction providing 48 specimens, and were divided into 4 groups (n=12): (G1) Control - Bleaching gel without light activation, (G2) Bleaching gel + halogen light, (G3) Bleaching gel + LED, (G4) Bleaching gel + Nd: YAG Laser. The temperatures were recorded using a digital thermometer at 4 time points: before bleaching gel application, 1 min after bleaching gel application, during activation of the bleaching gel, and after the bleaching agent turned from a dark-red into a clear gel. Data were analyzed statistically by the Dunnet's test, ANOVA and Tukey's test (alpha=0.05). Results: The mean intrapulpal temperature values (degrees C) in the groups were: G1: 0.617 +/- 0.41; G2: 1.800 +/- 0.68; G3: 0.975 +/- 0.51; and G4: 4.325 +/- 1.09. The mean maximum temperature variation (MTV) values were: 1.5 degrees C (G1), 2.9 degrees C (G2), 1.7 degrees C (G3) and 6.9 degrees C (G4). When comparing the experimental groups to the control group, G3 was not statistically different from G1 (p>0.05), but G2 and G4 presented significantly higher (p<0.05) intrapulpal temperatures and MTV. The three experimental groups differed significantly (p<0.05) from each other. Conclusions: The Nd: YAG laser was the activation method that presented the highest values of intrapulpal temperature variation when compared with LED and halogen light. The group activated by LED light presented the lowest values of temperature variation, which were similar to that of the control group.en
dc.description.affiliationSão Paulo State Univ, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationSão Paulo State Univ, Dept Restorat Dent, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Dept Restorat Dent, Sao Jose Dos Campos, SP, Brazil
dc.format.extent436-439
dc.identifierhttp://dx.doi.org/10.1590/S1678-77572009000500016
dc.identifier.citationJournal of Applied Oral Science. Bauru-sp: Univ São Paulo Fac Odontologia Bauru, v. 17, n. 5, p. 436-439, 2009.
dc.identifier.fileS1678-77572009000500016.pdf
dc.identifier.issn1678-7757
dc.identifier.scieloS1678-77572009000500016
dc.identifier.urihttp://hdl.handle.net/11449/22787
dc.identifier.wosWOS:000272088200016
dc.language.isoeng
dc.publisherUniversidade de São Paulo (USP), Faculdade de Odontologia de Bauru
dc.relation.ispartofJournal of Applied Oral Science
dc.relation.ispartofjcr1.709
dc.relation.ispartofsjr0,645
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectTooth bleachingen
dc.subjectTemperatureen
dc.titleINTRAPULPAL TEMPERATURE VARIATION DURING BLEACHING WITH VARIOUS ACTIVATION MECHANISMSen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/jaos/paboutj.htm
dcterms.rightsHolderUniv São Paulo Fac Odontologia Bauru
unesp.author.orcid0000-0001-7398-6438[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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Artigos - Materiais Odontológicos e Prótese - ICT
Artigos - Odontologia Restauradora - ICT