Objective: The aim of the study was to assess the effect of incorporation silver nanoparticles to resin composite restorative material on its shear punch strength and degree of conversion. Method: A total of 60 cylindrical resin composite specimens (A) was divided into three equal groups of twenty discs each. First group (A0) used as a control. Second group (A1); modified by incorporating spherical silver nanoparticles. Third group (A2); modified by incorporating anisotropic silver nanoparticles. Later on, each group was divided into two sub-groups; first sub-group of 15 specimens used for conducting shear punch strength test and the second sub-group of the resting 5 specimens used to evaluate the degree of conversion. Results: There was no statistically significant difference between specimens, in shear punch strength, with or without silver, of either shape; spherical or anisotropic. Control group showed statistically significant difference in the degree of conversion between it and both groups incorporating AgNPs. There was no statistically significant difference between both groups of AgNPs; with spherical or anisotropic shapes; in their degree of conversion. Conclusions: Incorporation of spherical and anisotropic antibacterial silver nanoparticles to resin composite did not compromise its shear punch strength. Despite the decrease in initial DC of resin composite incorporating silver nanoparticles it is considered within the accepted values.