Aging and post-polymerization effects on conversion degree and properties of additive splint materials

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorPrivate practice-
Autor(es): dc.contributorBiologic and Materials Science and Prosthodontics Department-
Autor(es): dc.contributorSchool of Dental Medicine-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorSantis, Leandro Ruivo de-
Autor(es): dc.creatorFernandes, Lucas Silveira-
Autor(es): dc.creatorVasques, Mayra Torres-
Autor(es): dc.creatorZambrana, Nataly Rabelo Mina-
Autor(es): dc.creatorViana, Ítallo Emídio Lira-
Autor(es): dc.creatorForlin, Taís Scaramucci-
Autor(es): dc.creatorSaavedra, Guilherme de Siqueira Ferreira Anzaloni-
Autor(es): dc.creatorFrancci, Carlos Eduardo-
Data de aceite: dc.date.accessioned2025-08-21T16:13:28Z-
Data de disponibilização: dc.date.available2025-08-21T16:13:28Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/1807-3107bor-2025.vol39.017-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/308626-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/308626-
Descrição: dc.descriptionThe study objective was to analyze dimensional change, flexural strength, surface hardness, wear profile, and conversion degree of different additive splint materials under various postpolymerization conditions of time and artificial aging. Two additive manufacturing systems (Cara Print 4.0, Dima Print Ortho, Kulzer; SprintRay Pro, SprintRay Splint, SprintRay), and a thermally activated resin control (Clássico) were evaluated in artificial aging (deionized water or saliva; 28 or 84 days at 37°C), with recommended or doubled post-polymerization cycles. Dimensional change (surface metrology), flexural strength (ISO 20795–1:2013), fractography (SEM), Knoop hardness, two-body wear profilometry (150,000 cycles; 3mmØ; 20N; 2.1Hz), and conversion degree (FTIR spectroscopy) were assessed. Two-way ANOVA and post-hoc Tukey tests were used for parametric data, and Kruskal-Wallis and post-hoc Dunn tests, for non-parametric data (α = 0.05). Results indicated no statistically significant differences in dimensional change or flexural strength among the materials. Recommended post-polymerization cycles resulted in lower hardness for additive resins than the thermally activated control. Doubling post-polymerization time significantly increased flexural strength and hardness of Dima Print Ortho, but decreased flexural strength of SprintRay Splint, and did not affect wear resistance. Dima Print Ortho demonstrated the highest wear resistance. Artificial aging did not affect flexural strength, surface wear, or dimensional change, but negatively impacted the hardness of all materials except Dima Print Ortho. The conversion degree was unaffected by post-polymerization time, and no significant differences were found among the materials. Overall, additive materials exhibited mechanical and dimensional properties comparable to thermally activated resin, with doubling post-polymerization time positively influencing the properties.-
Descrição: dc.descriptionUniversidade de São Paulo – USP School of Dentistry Department of Prosthetics, SP-
Descrição: dc.descriptionPrivate practice, SP-
Descrição: dc.descriptionUniversity of Michigan School of Dentistry Biologic and Materials Science and Prosthodontics Department-
Descrição: dc.descriptionTufts University School of Dental Medicine-
Descrição: dc.descriptionUniversidade de São Paulo – USP School of Dentistry Department of Dentistry, SP-
Descrição: dc.descriptionUniversidade Estadual Paulista – Unesp School of Dentistry Department of Dental Materials and Prosthetics, SP-
Descrição: dc.descriptionUniversidade de São Paulo – USP School of Dentistry Department of Biomaterials and Oral Biology, SP-
Descrição: dc.descriptionUniversidade Estadual Paulista – Unesp School of Dentistry Department of Dental Materials and Prosthetics, SP-
Idioma: dc.languageen-
Relação: dc.relationBrazilian Oral Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectOcclusal Splints-
Palavras-chave: dc.subjectPolymerization-
Palavras-chave: dc.subjectPrinting, Three-Dimensional-
Título: dc.titleAging and post-polymerization effects on conversion degree and properties of additive splint materials-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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