Analysis of the effects of thermal cycling on the microtensile shear bond strength of a self-etching and a conventional pit and fissure sealants to dental enamel

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Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorNeto, Daniel Sundfeld-
Autor(es): dc.creatorSobrinho, Lourenço Correr-
Autor(es): dc.creatorGonçalves, Luciano S.-
Autor(es): dc.creatorRahal, Vanessa-
Autor(es): dc.creatorMachado, Lucas Silveira-
Autor(es): dc.creatorDe Oliveira, Fernanda Garcia-
Autor(es): dc.creatorValentino, Thiago A.-
Autor(es): dc.creatorSundfeld, Renato Herman-
Data de aceite: dc.date.accessioned2025-08-21T17:35:12Z-
Data de disponibilização: dc.date.available2025-08-21T17:35:12Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2013-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/232422-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/232422-
Descrição: dc.descriptionObjective: To analyze the effects of thermal cycling on the microtensile shear bond strength of a self-etching and a conventional pit and fissure sealants to dental enamel. Material and Method: Twenty-four healthy human molars extracted for orthodontic reasons, were sectioned in the mesio-distal direction and divided into two groups (n=24) according to the sealant to be applied: GI - conventional sealant Climpro (3M/ESPE) and GII - self-etching sealant Enamel Loc (Premier Dental). The sealants were applied on flattened enamel in matrixes 1 mm in diameter, in accordance with the manufacturers' recommendations. The specimens were stored in distilled water at 37°C for 24 hours. After this, half the samples of both groups were submitted to 500 thermal cycles in 30s baths at temperatures between 5 and 55°C. Forty-eight hours after the samples were made, the microtensile shear test was performed in an Instron 4411 test machine, with a stainless steel wire with a cylindrical cross section of 0.2mm in diameter at a constant speed of 0.5mm/s. The bond strength values were submitted to ANOVA for 2 factors and the fracture patterns were examined under an optical microscope at 65X magnification. Results: Thermal cycling did not influence the bond strength of the two sealants. The conventional sealant Climpro presented a statistically higher microtensile shear bond strength (11.72MPa, 11.34MPa with and without cycling, respectively) than the self-etching sealant Enamel Loc (5.92MPa, 5.02MPa with and without cycling, respectively). Fracture pattern analysis showed the occurrence of 100% of adhesive failures for Enamel Loc, while the conventional sealant Climpro presented 95% of adhesive failures and 5% of mixed failures. Conclusion: The conventional sealant presented higher microtensile shear bond strength to dental enamel in comparison with the self-etching sealant. Thermal cycling did not affect the bond strength of the sealants used in this study.-
Descrição: dc.descriptionDepartment of Restorative Dentistry, Piracicaba Dental School, UNICAMP, State University of Campinas-
Descrição: dc.descriptionAraçatuba Dental School, UNESP, Rua José Bonifácio 1193-
Descrição: dc.descriptionPaulista State University, Araçatuba Dental School, UNESP-
Descrição: dc.descriptionAraçatuba Dental School, UNESP, Rua José Bonifácio 1193-
Descrição: dc.descriptionPaulista State University, Araçatuba Dental School, UNESP-
Formato: dc.format1-10-
Idioma: dc.languageen-
Relação: dc.relationClinical Dentistry Research Compendium-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDental enamel-
Palavras-chave: dc.subjectMicroshear-
Palavras-chave: dc.subjectSelf-etching and conventionalpit and fissure sealants-
Palavras-chave: dc.subjectThermal cycling-
Título: dc.titleAnalysis of the effects of thermal cycling on the microtensile shear bond strength of a self-etching and a conventional pit and fissure sealants to dental enamel-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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