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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/116995
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dc.contributor.authorFigueiredo, Romulo Aguiar-
dc.contributor.authorAnami, Lilian Costa-
dc.contributor.authorMello, Isabel-
dc.contributor.authorCarvalho, Erica dos Santos-
dc.contributor.authorHabitante, Sandra Marcia-
dc.contributor.authorRaldi, Denise Pontes-
dc.date.accessioned2015-03-18T15:54:42Z-
dc.date.accessioned2016-10-25T20:31:59Z-
dc.date.available2015-03-18T15:54:42Z-
dc.date.available2016-10-25T20:31:59Z-
dc.date.issued2014-08-01-
dc.identifierhttp://dx.doi.org/10.1089/pho.2014.3722-
dc.identifier.citationPhotomedicine And Laser Surgery. New Rochelle: Mary Ann Liebert, Inc, v. 32, n. 8, p. 458-462, 2014.-
dc.identifier.issn1549-5418-
dc.identifier.urihttp://hdl.handle.net/11449/116995-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/116995-
dc.description.abstractObjective: This study sought to assess if discoloration of tooth structures occurs after photodynamic therapy (PDT) and to determine the efficacy of a protocol to remove the photosensitizers. Background data: PDT has been used in root canal treatment to enhance cleaning and disinfection of the root canal system. PDT uses a low power laser in association with a dye as a photosensitizer. Photosensitizers can induce staining of the dental structures, resulting in an unaesthetic appearance. Methods: Forty teeth were randomly divided into four groups according to the photosensitizer used and pre-irradiation time: 0.01% methylene blue for 5 min (MB5); 0.01% methylene blue for 10 min (MB 10); 0.01% toluidine blue for 5 min (TB5); and 0.01% toluidine blue for 10 min (TB 10). Specimens were irradiated with a 660 nm diode laser with a 300 mu m diameter optical fiber, at 40 mW power setting for 3 min. Immediately after, the photosensitizers were removed with Endo-PTC cream +2.5% sodium hypochlorite (NaOCl). The shade was measured by a Vita Easyshade spectrophotometer based on the CIELAB color system (L*a*b* values) at three different experimental times: before PDT (T0), immediately after PDT (T1), and after removal of the photosensitizer (T2). Results: The results showed a decrease in the averages of the L*a*b* coordinate values after PDT (T1) in all the groups, when compared with the number at T0, with a significant statistical difference in group MB10. After photosensitizer removal (T2), all the values of the coordinates increased with significant statistical differences (p < 0.05) between T1 and T2 in L* and a*. Conclusions: It can be concluded that both methylene blue and toluidine blue dyes cause tooth discoloration, and that Endo-PTC cream associated with 2.5% NaOCl effectively remove these dyes, regardless of the pre-irradiation time used for PDT.en
dc.format.extent458-462-
dc.language.isoeng-
dc.publisherMary Ann Liebert, Inc-
dc.sourceWeb of Science-
dc.titleTooth Discoloration Induced by Endodontic Phenothiazine Dyes in Photodynamic Therapyen
dc.typeoutro-
dc.contributor.institutionUniv Taubate-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniv Manitoba-
dc.description.affiliationUniv Taubate, Dept Dent, Sao Paulo, Brazil-
dc.description.affiliationUNESP Sao Paulo State Univ, Inst Sci & Technol, Dept Dent Mat & Prosthodont, Sao Paulo, Brazil-
dc.description.affiliationUniv Manitoba, Div Endodontol, Dept Restorat Dent, Winnipeg, MB, Canada-
dc.description.affiliationUnespUNESP Sao Paulo State Univ, Inst Sci & Technol, Dept Dent Mat & Prosthodont, Sao Paulo, Brazil-
dc.identifier.doi10.1089/pho.2014.3722-
dc.identifier.wosWOS:000340526100006-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofPhotomedicine And Laser Surgery-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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