Lost wax investment technique with teeth in a wax trial denture Advancements PMMA used since 1930’s polymethylmethacrylate Recent advancements is delivery of PMMA through injection molding In 2002 LC thermoplastic urethane-dimethacrylate resin Advantage of urethane-dimethacryalte No monomer No flasking and packing Short processing times Less than half volumetric shrinking compared to PMMA Will bond to […]