Influence of the base and diluent monomer on network characteristics and mechanical properties of neat resin and composite materials

Nívea Regina de Godoy Fróes-Salgado, Vinícius Gajewski, Bárbara Pick Ornaghi, Carmem Silvia Costa Pfeifer, Marcia Margarete Meier, Tathy Aparecida Xavier, Roberto Ruggiero Braga

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

This study evaluated the effect of the combination of two dimethacrylate-based monomers [bisphenol A diglycidyl dimethacrylate (BisGMA) or bisphenol A ethoxylated dimethacrylate (BisEMA)] with diluents either derived from ethylene glycol dimethacrylate (ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate) or 1,10-decanediol dimethacrylate (D3MA) on network characteristics and mechanical properties of neat resin and composite materials. The degree of conversion, maximum rate of polymerization and water sorption/solubility of unfilled resins and the flexural strength and microhardness of composites (after 24 h storage in water and 3 months storage in a 75 vol% ethanol aqueous solution) were evaluated. Data were analyzed with two-way ANOVA and Tukey’s test (α = 0.05). The higher conversion and lower water sorption presented by BisEMA co-polymers resulted in greater resistance to degradation in ethanol compared with BisGMA-based materials. In general, conversion and mechanical properties were optimized with the use of long-chain dimethacrylate derivatives of ethylene glycol. D3MA rendered more hydrophobic materials, but with relatively low conversion and mechanical properties.

Original languageEnglish (US)
Pages (from-to)160-168
Number of pages9
JournalOdontology
Volume103
Issue number2
DOIs
StatePublished - May 27 2015

Keywords

  • Composite
  • Degree of conversion
  • Mechanical property
  • Resin
  • Water sorption

ASJC Scopus subject areas

  • Dentistry(all)

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    de Godoy Fróes-Salgado, N. R., Gajewski, V., Ornaghi, B. P., Pfeifer, C. S. C., Meier, M. M., Xavier, T. A., & Braga, R. R. (2015). Influence of the base and diluent monomer on network characteristics and mechanical properties of neat resin and composite materials. Odontology, 103(2), 160-168. https://doi.org/10.1007/s10266-014-0153-6