Novel urethane-based polymer for dental applications with decreased monomer leaching

Gedalias C. Martim, Carmem Pfeifer, Emerson M. Girotto

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

The aim of this study was to synthesize and characterize new multifunctional-urethane-methacrylate monomers to be used as the organic matrix in restorative dental composites, and evaluate the main physical-chemical properties of the resulting material. Bis-GMA (bisphenol-A-diglycidylmethacrylate) and GDMA (glycerol dimethacrylate) were modified by reacting the hydroxyl groups with isocyanate groups of urethane-methacrylate precursors to result in the new monomeric systems U-(bis-GMA)-Mod and U-(GDMA)-Mod, U = Urethane and Mod = Modified. The modifications were characterized by FTIR and 1H NMR. The final monomeric synthesized system was used to prepare dental resins and composites. The physical-chemical properties were evaluated and compared with those of bis-GMA composites with varying filler contents or unfilled resins. U-(bis-GMA)-Mod and U-(GDMA)-Mod can be used to prepare dental restorative composites, with some foreseeable advantages compared with bis-GMA composites. One significant advantage is that these composites have the potential to be less toxic, once they presented a reduction of 50% in leaching of unreacted monomers extracted by solvent.

Original languageEnglish (US)
Pages (from-to)192-201
Number of pages10
JournalMaterials Science and Engineering C
Volume72
DOIs
StatePublished - Mar 1 2017

Keywords

  • Bisphenol A
  • Bisphenol A-glycidyl methacrylate
  • Composite resin
  • Methacrylates
  • Physicochemical phenomena
  • Urethane

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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