Polymerization shrinkage, hygroscopic expansion, elastic modulus and degree of conversion of different composites for dental application

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversity of Amsterdam and Vrije Universiteit Amsterdam-
Autor(es): dc.creatorBorges, Alexandre Luiz Souto-
Autor(es): dc.creatorDal Piva, Amanda Maria de Oliveira-
Autor(es): dc.creatorMoecke, Sabrina Elise-
Autor(es): dc.creatorde Morais, Raquel Coutinho-
Autor(es): dc.creatorTribst, João Paulo Mendes-
Data de aceite: dc.date.accessioned2025-08-21T22:46:48Z-
Data de disponibilização: dc.date.available2025-08-21T22:46:48Z-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2022-05-01-
Data de envio: dc.date.issued2021-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/jcs5120322-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/233909-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/233909-
Descrição: dc.descriptionObjectives: To characterize the mechanical properties of different resin-composites for dental application. Methods: Thirteen universal dentin shade composites (n = 10) from different manufacturers were evaluated (4 Seasons, Grandio, Venus, Amelogen Plus, P90, Z350, Esthet-X, Amaris, Vita-l-escence, Natural-Look, Charisma, Z250 and Opallis). The polymerization shrinkage percentage was calculated using a video-image recording device (ACUVOL—Bisco Dental) and the hygroscopic expansion was measured after thermocycling aging in the same equipment. Equal volumes of material were used and, after 5 min of relaxation, baseline measurements were calculated with 18 J of energy delivered from the light-curing unit. Specimens were stored in a dry-dark environment for 24 h then thermocycled in distilled water (5–55◦C for 20,000 cycles) with volume measurement at each 5000 cycles. In addition, the pulse-excitatory method was applied to calculate the elastic modulus and Poisson ratio for each resin material and the degree of conversion was evaluated using Fourier transform infrared spectroscopy. Results: The ANOVA showed that all composite volumes were influenced by the number of cycles (α = 0.05). Volumes at 5 min post-polymerization (12.47 ± 0.08 cm3) were significantly lower than those at baseline (12.80 ± 0.09 cm3). With regard to the impact of aging, all resin materials showed a statistically significant increase in volume after 5000 cycles (13.04 ± 0.22 cm3). There was no statistical difference between volumes measured at the other cycle steps. The elastic modulus ranged from 22.15 to 10.06 GPa and the Poisson ratio from 0.54 to 0.22 with a significant difference between the evaluated materials (α = 0.05). The degree of conversion was higher than 60% for all evaluated resin composites.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionInstitute of Science and Technology São Paulo State University (Unesp)-
Descrição: dc.descriptionAcademic Centre for Dentistry Amsterdam (ACTA) University of Amsterdam and Vrije Universiteit Amsterdam-
Descrição: dc.descriptionInstitute of Science and Technology São Paulo State University (Unesp)-
Descrição: dc.descriptionFAPESP: 2010/51749-3-
Descrição: dc.descriptionCNPq: 201980/2011-8-
Idioma: dc.languageen-
Relação: dc.relationJournal of Composites Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectComposite dental resin-
Palavras-chave: dc.subjectDental materials-
Palavras-chave: dc.subjectPolymerization-
Palavras-chave: dc.subjectVideo recording-
Título: dc.titlePolymerization shrinkage, hygroscopic expansion, elastic modulus and degree of conversion of different composites for dental application-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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