@Article{, title={Water sorption of heat–cured acrylic resin}, author={Lamia T Rejab and Ahmed MA Hussain and Ammar Kh Al-Nori}, journal={Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان}, volume={7}, number={2}, pages={186-194}, year={2007}, abstract={Aims: To evaluate the effect of the different curing methods conventional water bath heat–curing andmicrowave energy curing method and different immersion periods on the water sorption and solubilityof the different types of heat–cured acrylic resins. Materials and methods: Water sorption and solubilitywere measured by means of mass change in the materials after water saturation and dehydration. Twodifferent commercial heat–cured acrylic resins Major Base 2, and Quayle Dental resins were used in thisstudy. Specimens were divided into two groups depending on the curing method. Thirty two specimenswere prepared, eight specimens for each material in each group. Specimens were immersed in distilledwater, and then subsequently removed from their containers at 1 week and 1 month of immersion forevaluation. Mean values wear compared statistically with one way analysis of variance followed byDuncan's multiple range test to determined the significant different among the groups at (p< 0.05) levelof significance. Results: showed that the curing method and immersion period have a significant effecton the water sorption and solubility ratios of the resins. Curing by microwave energy method andincreasing immersion period caused increasing in the ratios. The type of heat–cured acrylic resin has aneffect but the difference was not significant. Conclusion: the curing method, immersion period and typesof the acrylic resin have an effect on the absorption and solubility ratios.

} }