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In this study, pomegranate peel extract (PPE) was used for the green synthesis of silver nanoparticles (AgNPs). The AgNPs were characterized by X-ray diffraction pattern (XRD) and transmission electron microscopy (TEM). TEM micrograph showed the spherical shape of AgNPs sized between 30 and 50 nm. XRD confirmed the face-centered cubic (FCC) crystalline structure of AgNPs. The antibacterial activity and cellular toxicity of the modified porcelain with AgNPs were also studied. The results of biocompatibility of modified porcelain with AgNPs revealed that samples decreased the viability of L929 cells and after treatment with AgNPs samples antibacterial activity was significantly increased. The effect of AgNPs on the optical behavior (color change (ΔE), contrast ratio (CR), and translucency parameter (TP)) of feldspathic porcelain was investigated by clinical spectrophotometer. It was shown that addition of AgNPs to feldspathic porcelain significantly increased the TP and decreased the CR compared to the control group. The results of this study indicate that addition of AgNPs up to 500 µg/mL AgNPs to VitaVM9 feldspathic porcelain did not cause the clinically recognizable threshold color change (ΔE  =  2.69) and increases the ceramic translucency.

Effect of green synthesized silver nanoparticles on optical behavior of feldspathic porcelain