Caries Prevention Effect of S-PRG Filler Incorporated in Denture Base Resins on Edentulous Elderly People

"Surface pre-reacted glass-ionomer (S-PRG) filler is a new type of biological material. This new material is being used in the formulation of dental product as filling materials. It has an anti-plaque effect which will release ions to alter the pH of the surrounding environment when it comes into contact with water or acidic solutions. These ions will exert their effect on caries prevention.~The amount of S-PRG filler that is put in the standard resin denture base is 20% by weight. They are incorporated into the resin denture base and maintain the mechanical properties as required by ISO 1567."

Polymethyl methacrylate (PMMA) resins have been used for the fabrication of resin denture base for 50 years. The advantages of PMMA resin that most notably is the ease of fabrication with very simple equipment but a limitation is the fragility because of its physical properties that include low flexural strength and surface hardness.