Determination of doughing and manipulation times of acrylic resin denture base material and a proposal for a specification for a packing plasticity test

Effect of ethanol treatment on mechanical properties of heat-polymerized polymethyl methacrylate denture base polymer

“…More homogeneous polymer structure of heat-polymerized polymer compared to auto-polymerized polymer which is due to the longer period of time when monomer liquid is being in contact with polymer beads, and can thus dissolve the polymer over a longer time 15,16) . In this study, heat cured denture base polymer was selected because there is limited knowledge existing whether the disinfectant ethanol or ethanol used as an intoxicant can have an effect to the surface of acrylic resin dentures.…”

Effect of ethanol treatment on mechanical properties of heat-polymerized polymethyl methacrylate denture base polymer

“…More homogeneous polymer structure of heat-polymerized polymer compared to auto-polymerized polymer which is due to the longer period of time when monomer liquid is being in contact with polymer beads, and can thus dissolve the polymer over a longer time 15,16) . In this study, heat cured denture base polymer was selected because there is limited knowledge existing whether the disinfectant ethanol or ethanol used as an intoxicant can have an effect to the surface of acrylic resin dentures.…”

Effect of deep-freezing on some properties of acrylic resin

“…Therefore the material should be packed during the doughy stage, since manipulating a material too early, or beyond this time, results in either breakdown of the material structure or damage to the mold, and consequently influences the accuracy and quality of the molded denture. Ideally, the doughy stage should be as long as possible, and the dough should exhibit good flow characteristics so that optimum packing plasticity is achieved [1].…”

Effect of ethanol treatment on mechanical properties of heat-polymerized polymethyl methacrylate denture base polymer

“…More homogeneous polymer structure of heat-polymerized polymer compared to auto-polymerized polymer which is due to the longer period of time when monomer liquid is being in contact with polymer beads, and can thus dissolve the polymer over a longer time 15,16) . In this study, heat cured denture base polymer was selected because there is limited knowledge existing whether the disinfectant ethanol or ethanol used as an intoxicant can have an effect to the surface of acrylic resin dentures.…”

Effect of deep-freezing on some properties of acrylic resin

“…Therefore the material should be packed during the doughy stage, since manipulating a material too early, or beyond this time, results in either breakdown of the material structure or damage to the mold, and consequently influences the accuracy and quality of the molded denture. Ideally, the doughy stage should be as long as possible, and the dough should exhibit good flow characteristics so that optimum packing plasticity is achieved [1].…”

Effect of ethanol treatment on mechanical properties of heat-polymerized polymethyl methacrylate denture base polymer

“…More homogeneous polymer structure of heat-polymerized polymer compared to auto-polymerized polymer which is due to the longer period of time when monomer liquid is being in contact with polymer beads, and can thus dissolve the polymer over a longer time 15,16) . In this study, heat cured denture base polymer was selected because there is limited knowledge existing whether the disinfectant ethanol or ethanol used as an intoxicant can have an effect to the surface of acrylic resin dentures.…”

Effect of deep-freezing on some properties of acrylic resin

“…Therefore the material should be packed during the doughy stage, since manipulating a material too early, or beyond this time, results in either breakdown of the material structure or damage to the mold, and consequently influences the accuracy and quality of the molded denture. Ideally, the doughy stage should be as long as possible, and the dough should exhibit good flow characteristics so that optimum packing plasticity is achieved [1].…”