Dispersion and Demineralization Inhibition Capacity of Novel Magnesium Oxide Nanoparticles Varnish on Enamel Surfaces against Streptococcus mutans (an In Vitro Study)

This research analyzed the dispersion and impact of magnesium oxide nanoparticles (MgONPs) varnish on inhibiting enamel demineralization. A novel MgONPs was prepared in absolute ethanol with rosin 10%, 5%, 2.5%, 1.25% concentrations. The samples were classified into six groups, including four tested varnish, one commercial 5% NaF control groups non-protected sound dental groups. Each group included five three broths 20 mL per sample. examinations started by applying different concentrations varnishes surfaces, which then exposed to Streptococcus mutans (S. mutans) sequences time for 144 h. scanning electron microscope (SEM) energy dispersive X-ray spectroscopy (EDX) used examine MgONPs’ dispersion. Inductively coupled plasma optical emission (ICP-OES) quantify calcium (Ca) released from enamel. SEM EDX evaluations showed a significantly increased highest median. ICP-OES test significant inhibition levels Ca release capacity 2.5% varnishes, similar varnish. revealed increasing MgONPs, maximum protection associated demineralization effect