Effect of two formulations of 10% sodium ascorbate on fracture resistance of endodontically treated tooth submitted to dental bleaching with hydrogen peroxide associated titanium dioxide nanoparticles

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Federal do Rio Grande do Sul (UFRGS)
dc.contributorUniversidade do Sul de Santa Catarina (UNISUL)
dc.creatorBontorin, Francisco Carlos [UNESP]
dc.creatorKuga, Milton Carlos [UNESP]
dc.creatorCioffi, Sabrina Spinelli [UNESP]
dc.creatorSó, Marcus Vinicius Reis
dc.creatorFaria, Gisele [UNESP]
dc.creatorPereira, Jefferson Ricardo
dc.date2015-08-06T16:13:18Z
dc.date2015-08-06T16:13:18Z
dc.date2014
dc.date.accessioned2023-09-12T05:48:28Z
dc.date.available2023-09-12T05:48:28Z
dc.identifierhttp://www.portaldeperiodicos.unisul.br/index.php/JR_Dentistry/article/view/1986
dc.identifierJournal of Research in Dentistry, v. 2, n. 1, p. 13-21, 2014.
dc.identifier2317-5907
dc.identifierhttp://hdl.handle.net/11449/125856
dc.identifierISSN2317-5907-2014-02-01-13-21.pdf
dc.identifier1627568419811788
dc.identifier1411074363039082
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8775251
dc.descriptionPurpose: This study evaluated the effect of 10% sodium ascorbate (10SA), in gel (10SAg) or aqueous solution (10SAs) formulations, on fracture resistance of endodontically treated tooth submitted to dental bleaching procedures with 15% hydrogen peroxide associated with titanium dioxide (15HP-TiO2) nanoparticles and photoactivated by LED-laser. Material and methods: Forty maxillary premolars were endodontically-treated and embedded in acrylic resin up to the cement-enamel junction. The specimens were divided into four groups (n=10): G1 (negative control): no bleaching, coronal access restored with composite resin; G2 (positive control): three dental bleaching sessions using 15HP-TiO2 and LED-laser photoactivation and restored with composite resin (positive control); G3 (10SAg): similar procedures to G2, but applied 10SA, in gel formulation, for 24 hours before restoration; G4 (10SAs): similar procedures to G3, but applied 10SA, in aqueous solution formulation. The 15HP-TiO2 was applied on buccal and lingual surfaces of the crown tooth and inside the pulp chamber and photoactivated by LED-laser. Between each bleaching session, the teeth were maintained in artificial saliva, at 37oC, for 7 days. In sequence, the teeth were submitted to fracture resistance testing using an eletromechanical machine test. The data was analyzed using Kruskal Wallis test (p = 0.05) Results: There are no differences significant among the groups in relation to fracture resistance of endodontically treated teeth (p>0.05). Conclusions: The use of 10% sodium ascorbate, in gel or aqueous solution formulations, did not interfered on the fracture resistance teeth after dental bleaching using 15HP-TiO2 and LED-laser photoactivation.
dc.descriptionUniversidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Odontologia Restauradora, Faculdade de Odontologia de Araraquara
dc.format13-21
dc.languageeng
dc.relationJournal of Research in Dentistry
dc.rightsAcesso aberto
dc.sourceCurrículo Lattes
dc.subjectTooth bleaching
dc.subjectPeroxides
dc.subjectEndodontics
dc.subjectAntioxidants
dc.subjectTooth fractures
dc.titleEffect of two formulations of 10% sodium ascorbate on fracture resistance of endodontically treated tooth submitted to dental bleaching with hydrogen peroxide associated titanium dioxide nanoparticles
dc.typeArtigo


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