Abstract
Heat-cured acrylic resin reinforcement with aluminum oxide: Degree of conversion, monomer release and flexural strength
Highlights
Conventional heat-activated acrylic resin denture base materials are still the most commonly used denture base materials
Aluminum oxide powder reinforcement was slightly increased the degree of conversion of the heat-cured acrylic resin
Aluminum oxide powder reinforcement was significantly reduced the amount of monomer released and the deflection at fracture heat-cured specimens
Summary
Conventional heat-activated acrylic resin denture base materials are still the most commonly used denture base materials. Curing of the acrylic dough mix in the curing bath may affect the polymerization of the denture base resin material. The degree of conversion of the acrylic resin monomer is a measure of carbon-carbon double bonds (c=c) converted into carbon-carbon single bonds (c-c). The molecular mobility increases, leading to increased monomer polymerization. Polymerization of heat-cured acrylic resin by heat depends on time and temperature. Various amounts of unreacted methyl methacrylate monomer remain after curing of the denture bases [1]. Degree of monomer conversion during processing of acrylic resin denture base materials is very critical in determination of monomer release and mechanical properties of acrylic resin in service
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