Abstract

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.

摘要

在这项研究中，石榴皮提取物 (PPE) 用于银纳米粒子 (AgNPs) 的绿色合成。通过 X 射线衍射图 (XRD) 和透射电子显微镜 (TEM) 对 AgNPs 进行了表征。TEM 显微照片显示大小在 30 和 50 nm 之间的 AgNPs 的球形。XRD 证实了 AgNPs 的面心立方 (FCC) 晶体结构。还研究了 AgNPs 修饰瓷的抗菌活性和细胞毒性。改性瓷与 AgNPs 的生物相容性结果表明，样品降低了 L929 细胞的活力，并且在用 AgNPs 处理后样品的抗菌活性显着增加。AgNPs 对光学行为的影响（颜色变化 (ΔE)、对比度 (CR)、用临床分光光度计研究了长石瓷的透光度参数（TP）。结果表明，与对照组相比，在长石瓷中添加 AgNPs 显着增加了 TP 并降低了 CR。这项研究的结果表明，在 VitaVM9 长石瓷中添加高达 500 µg/mL AgNPs 的 AgNPs 不会导致临床可识别的阈值颜色变化 (ΔE = 2.69) 并增加陶瓷半透明度。