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Achieving property enhancements in dental resin composites via reduced concentrations of camphorquinone within a ternary initiator system.
Dressano, Diogo; Salvador, Marcos Vinícius Oliveira; Aguiar, Flávio Henrique Baggio; Gonçalves, Luciano Souza; Palin, William M; Watts, David C; Hadis, Mohammed A; Lima, Adriano Fonseca; Marchi, Giselle Maria.
Afiliação
  • Dressano D; Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Av Limeira, 901 Mail Box 52, Piracicaba, Sao Paulo 13414-903, Brazil.
  • Salvador MVO; Dental Research Division, Paulista University, Rua Doutor Bacelar, 1212, CEP: 04026-002 Sao Paulo, Brazil.
  • Aguiar FHB; Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Av Limeira, 901 Mail Box 52, Piracicaba, Sao Paulo 13414-903, Brazil.
  • Gonçalves LS; Department of Restorative Dentistry, School of Dentistry, Federal University of Santa Maria, Av. Roraima, 1000 - Camobi, Santa Maria, RS 97105-900, Brazil.
  • Palin WM; University of Birmingham, College of Medical and Dental Sciences, Institute of Clinical Sciences, 5 Mill Pool Way, Edgbaston, Birmingham B5 7EG, UK.
  • Watts DC; School of Medical Sciences and Photon Science Institute, Coupland 3 Building, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
  • Hadis MA; University of Birmingham, College of Medical and Dental Sciences, Institute of Clinical Sciences, 5 Mill Pool Way, Edgbaston, Birmingham B5 7EG, UK. Electronic address: M.Hadis@bham.ac.uk.
  • Lima AF; Dental Research Division, Paulista University, Rua Doutor Bacelar, 1212, CEP: 04026-002 Sao Paulo, Brazil. Electronic address: lima.adf@gmail.com.
  • Marchi GM; Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Av Limeira, 901 Mail Box 52, Piracicaba, Sao Paulo 13414-903, Brazil.
Dent Mater ; 40(9): 1400-1408, 2024 Sep.
Article em En | MEDLINE | ID: mdl-38908961
ABSTRACT

OBJECTIVES:

The study aimed to assess the impact of diphenyliodonium hexafluorophosphate (DPI) on the physicochemical properties of experimental resin composites (ECRs) featuring reduced concentrations of camphorquinone (CQ)/amine.

METHODS:

Five concentrations of CQ (0.125, 0.25, 0.5, 0.75, and 1 mol%) with dimethylaminoethyl amine benzoate (EDAB) in a 12 mol% ratio (CQEDAB) were incorporated into a 5050 mass% monomer blend of bisphenol glycidyl methacrylate (BisGMA) and triethyleneglycol dimethacrylate (TEGDMA). An additional 5 groups with the same CQEDAB concentrations had 0.5 mol% DPI added. Each resin group contained 60 wt% of 0.7 µm barium-alumino-silicate glass. Light transmission (n = 3), real-time degree of polymerization (n = 3), temperature change during polymerization (n = 5), polymerization shrinkage strain (n = 3), flexural strength, and modulus (n = 12), as well as water sorption and solubility (n = 5), were evaluated. Data were analyzed using two-way ANOVA and Tukey's post-hoc test (α = 0.05).

RESULTS:

Light transmission was reduced in groups containing 0.125 and 0.25 mol% of CQ without DPI. DPI increased temperature, degree and rate of polymerization, despite the reduction in CQ/amine concentration. Additionally, there was an increase in polymerization shrinkage strain, flexural strength and modulus, and a reduction in water sorption and solubility in ECRs with DPI, even with lower concentrations of CQ/EDAB.

SIGNIFICANCE:

DPI improved the assessed properties of composites across various concentrations of CQ/EDAB, showing the benefit of reducing the quantity of CQ used without compromising the properties and curing of the resin composites.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Polietilenoglicóis / Ácidos Polimetacrílicos / Terpenos / Teste de Materiais / Resinas Compostas / Polimerização Idioma: En Revista: Dent Mater Assunto da revista: ODONTOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Polietilenoglicóis / Ácidos Polimetacrílicos / Terpenos / Teste de Materiais / Resinas Compostas / Polimerização Idioma: En Revista: Dent Mater Assunto da revista: ODONTOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido