Influence of acrylamide monomer addition to the acrylic denture-base resins on mechanical and physical properties

Abstract

A small chemical compound can have a big impact on the stability of polymers for denture bases, according to Turkish scientists. Acrylic polymers such as polymethyl methacrylate (PMMA) find wide use in dental restoration because they are easy to fabricate and feel comfortable in the mouth. Their less-than-ideal mechanical properties, however, make PMMA dentures prone to fracture. Elif Aydogan Ayaz and Rukiye Durkan from Karadeniz Technical University compared traditional PMMA denture bases to ones incorporating varying amounts of acrylic acid, a reactive molecule that can cross-link polymer fibers together. Tests that simulated chewing motions showed that acrylic acid additions significantly reduced polymer fatigue by improving the material’s resistance to bending. Their quantitative chemical analysis revealed that efficient co-polymerization between PMMA and acrylic acid provides much-needed reinforcements to the denture base.

Keywords

acrylamide / denture resin / nuclear magnetic resonance / poly(methyl methacrylate) / thermogravimetric analysis / three-point bending test

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