The effect of preparation conditions of acrylic denture base materials on the level of residual monomer, mechanical properties and water absorption.

OBJECTIVES AND METHODS: The curing of several commercial powder/liquid mixtures of acrylic denture base materials was carried out at different temperatures and curing times. The levels of residual monomer, tensile strength, percentage elongation before break and water absorption were measured. RESULTS AND CONCLUSION: It was found that the level of residual monomer determined by gas-liquid chromatography decreased with curing time and temperature increase. At the same time, the tensile strength was improved and water absorption decreased.