Improvement anti biological effect of Dycal® Calcium Hydroxide Liner cement by addition of ZnO NPs

Abstract

Successful root canal therapy depends on preventing bacterial development during treatment sessions. The most frequent method for doing this is by using Dycal® Calcium Hydroxide, but some researchers have indicated that Dycal is ineffective in this area. This study aimed to evaluate the inhibitory effects of Dycal® Calcium Hydroxide based on Staphylococcus, E. coli, and Candida with those of zinc oxide nanoparticles generated by chemical and green synthesis. Characterization of the prepared samples utilizing FE-SEM, EDX, FTIR, and UV-Visible. The amorphous form and particle sizes of the ZnO NPs ch. and gr. were revealed by the SEM images to be 24.87 nm and 33.58 nm, respectively. FTIR data analysis centered on peaks between 4000 and 450 cm-1. The ZnO NPs (ch. and gr) absorption spectra had a constant peak at a wavelength of 300 nm. The Mann-Whitney test was used to examine the data. The findings show that ZnO NPs gr. synthesis at (25, 50, and 75) % concentrations could considerably produce an inhibitory zone that was greater than dycal alone (P value 0.5). The growth inhibition zone was substantially larger in the calcium hydroxide composition that contained 75% zinc oxide nanoparticles than in other ratios.