ABSTRACT
The different denture base materials and their processing techniques are developing in the field of removable and fixed prosthodontics. The polymers, especially acrylic resins are entered in this field more than 70 years ago and it is most widely used and material of choice around 80% world wide. Initially acrylic resins were polymerized by heat, later they developed using chemical accelerators for polymerization and termed as selfcure resins. The use of microwave energy to polymerize acrylic denture base in a 400 watt microwave oven for 2.5 minutes was reported in 1968 and properties ware discussed. The present study is designed to compare the residual monomer content in 24,48,72,96 and 120 hours periods of time and water absorption after 10 days in acrylic resin samples processed with conventional heat cure polymerization method and microwave polymerization method.