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 language | English (US) |
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Pages (from-to) | 192-201 |
Number of pages | 10 |
Journal | Materials Science and Engineering C |
Volume | 72 |
DOIs | |
State | Published - Mar 1 2017 |
Keywords
- Bisphenol A
- Bisphenol A-glycidyl methacrylate
- Composite resin
- Methacrylates
- Physicochemical phenomena
- Urethane
ASJC Scopus subject areas
- Bioengineering
- Biomaterials