Estimation of Some Properties of PMMA Matrix Reinforced with Yttrium Oxide and Glass Fiber for Dental Applications

Abstract

The aim of this study is to modify the performance of PMMA which is suitable for denture application.  It is desirable for Polymethyl methacrylate (PMMA) to have high mechanical properties for dental applications like denture. The reinforced of PMMA with 1 wt.% glass fiber and different weight percentage of Y₂O₃ were estimated. Increase the mechanical and physical properties were found with increased the weight percentage of Y₂O₃. The maximum impact strength was obtained by using 6% Y₂O₃ with 1 wt.% glass fibers. The physical properties, which are included density and water absorption increased with increased the weight percentage of Y₂O₃ in PMMA. Furthermore, the improvement in impact strength was obtained at 6% Y₂O₃ was 45.48%. Finally, the SEM results show the homogenous distribution of Y₂O₃ in PMMA.