Statement of problem:An ideal denture base material is that which possesses biocompatibility with the oral tissues, excellent esthetics and superior mechanical properties. Clinical failures of complete or partial denture prosthesis caused from poly methyl methacrylate are most likely in the form of fracture either due to fatigue or impact forces of mastication. Purpose: To evaluate the tensile strength and impact strength of poly methyl methacrylate(PMMA) reinforced with silver nanoparticles Material and methods:For tensile and impact strength tests a total of 70 heat cure acrylic specimens were fabricated with dimension 60x20x2mm in length, breadth and thickness respectively. The specimens were divided into two groups, in which 35 were unmodified PMMA samples and 35 were modified PMMA with silver Nano particles. The tensile and impact strength were evaluated using universal testing machine. The data was subjected to Independent sample t-test and results were obtained. Results: The strength test of acrylic samples for impact test group were statistically significant (p<0.05). The strength test of acrylic samples for tensile test group were statistically insignificant (p>0.05). Conclusion: Within the limitation of this study, it was concluded that the tensile strength of the acrylic resin did not vary much with the addition of silver nanoparticles and it was statistically insignificant. The impact strength of the acrylic resin significantly reduced with the addition of silver nanoparticles.