Effect of relining, water storage and cyclic loading on the flexural strength of a denture base acrylic resin

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatordos Santos Nunes Reis, Jose Mauricio-
Autor(es): dc.creatorEduardo Vergani, Carlos-
Autor(es): dc.creatorClaudia Pavarina, Ana-
Autor(es): dc.creatorTeresinha Giampaolo, Eunice-
Autor(es): dc.creatorLucia Machado, Ana-
Data de aceite: dc.date.accessioned2021-03-10T17:07:31Z-
Data de disponibilização: dc.date.available2021-03-10T17:07:31Z-
Data de envio: dc.date.issued2014-05-20-
Data de envio: dc.date.issued2014-05-20-
Data de envio: dc.date.issued2006-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jdent.2005.10.001-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/16367-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/16367-
Descrição: dc.descriptionObjectives: This study investigated the effect of relining, water storage and cyclic loading on the ultimate flexural strength (FSU) and on the flexural strength at the proportional limit (FSPl) of a denture base acrylic resin (Lucitone 550-L).Methods: Rectangular bars of L were made (64 mm x 10 mm x 2 mm) and relined (1.3 mm) with four relining resins (Kooliner-K, Ufi Gel Hard-UGH, Tokuso Rebase Fast-TR and New Truliner-NT). In addition, specimens relined with L and intact L specimens were made (64 mm x 10 mm x 3.3 mm). A three-point flexural test was applied on the specimens (n = 10) after (1) polymerization; (2) water storage (30 days); (3) cyclic loading (10,000 cycles at 5 Hz) and (4) water storage (30 days) + cyclic loading. Data (MPa) were analyzed with three-way ANOVA and Tukey's HSD tests (alpha = 0.05). To test for a possible correlation between FSU and FSPl, a linear regression coefficient 'r' was calculated.Results: After water storage, L-UGH and L-TR demonstrated an increased FSU (41.4950.64 MPa and 49.95-57.36 MPa, respectively) (P < 0.05). Only L-TR demonstrated an increased FSPl (20.58-24.21 MPa) after water storage (P < 0.05). L-L had the highest FSU (between 78.57 and 85.09 MPa) and FSPl (between 31.30 and 34.17 MPa) (P < 0.05). The cyclic loading decreased the FSU and FSPl of all materials (P < 0.05). Regression analysis showed a strong linear correlation between the two variables (r = 0.941).Conclusions: Water storage improved the FSU of L-UGH and L-TR and the FSPl of L-TR. L-L produced the highest FSU and FSPl. The FSU and FSPl of all materials were detrimentally influenced by cyclic loading.-
Formato: dc.format420-426-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationJournal of Dentistry-
Relação: dc.relation3.770-
Relação: dc.relation1,919-
Direitos: dc.rightsclosedAccess-
Palavras-chave: dc.subjectflexural strength-
Palavras-chave: dc.subjectacrylic resins-
Palavras-chave: dc.subjectrelining-
Palavras-chave: dc.subjectwater storage-
Palavras-chave: dc.subjectcyclic loading-
Título: dc.titleEffect of relining, water storage and cyclic loading on the flexural strength of a denture base acrylic resin-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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