Salvadora persica nanoparticles effect on the specific properties of a bio-composite dental material

The aim of this study is to evaluate the antibacterial activity of dental material containing nanoparticles of the extract of S. persica against Streptococcus pneumonia, Streptococcus mutans and Haemophilus influenza, and to examine their triboligical and mechanical properties. The specific properties of flowable dental material containing different percentage of the extract are investigated using the below different kinds of tests: - Antibacterial activity (including agar diffusion test), - Tribological behavior (including a pin-on-disk tribometer, surface profilometer and scanning electron microscopy (SEM)), - Mechanical behavior (including compressive strength, bending strength and bending modulus). The agar diffusion test reveals significant difference between the samples, whereas the antibacterial one demonstrates that the bacterial growth is diminished by increasing the nanoparticle content. The bending strength and the bending modulus remain unchanged by a 10% incorporation of the nanoparticles while the compressive strength increases significantly. The extract containing resins show higher wear resistance. The production of dental material with antibacterial activity, with suitable wear resistance, and particularly without any significant sacrificing effect on the mechanical properties is practically desirable in dental material science.