Development of new diacrylate monomers as substitutes for Bis-GMA and UDMA

Bisphenol A-glycidyl methacrylate (Bis-GMA) and urethane dimethacrylate (UDMA) are widely used as the primary components of (meth)acrylic monomers. However, use Bis-GMA, which is a bisphenol A derivative, in dentistry being questioned after was found to exhibit estrogenic activity. Although UDMA considered substitute for bis-GMA, mechanical properties cured resin composites containing less than desirable. Therefore, this study, we developed new alternative monomers enhance strength composite resins. Five acrylic were synthesized study monomer substituents replace Bis-GMA UDMA. The elastic modulus, strength, breaking energy values resins consisting mixtures acrylates diluting determined using three-point flexural test. data obtained analyzed one-way ANOVA post-hoc Tukey HSD tests (p < 0.05). Viscosities measured with cone-plate viscometer. Refractive indices an Abbe refractometer. results revealed that monomer-based exhibited higher modulus (up 40%) 21%) compared UDMA-based resin. Viscosity refractive index between those Bis-GMA. diacrylates prepared from diisocyanates have aromatic or aliphatic ring, 1,3-bis(1-isocyanato-1-methylethyl)benzene (TMXDI), 1,3-bis(isocyanatomethyl)benzene (XDI), norbornane diisocyanate (NBDI) worth considering options restorative composites.