Addition of zinc oxide nanoparticles in type II glass ionomer cement to the adhesion of Streptococcus mutans

GIC, as a restoration material has rough and brittle physical properties. The addition of nanoparticles to glass ionomer cement is needed to improve the physical properties of glass ionomer cement. Zinc oxide (ZnO) nanoparticle is an option because it reduces surface roughness and increases the release of fluoride, so the adhesion of S. mutans decreases. The aim of this study is to investigate the effect of ZnO nanoparticle application in different powder weight (0,1 gr, 0,5 gr and 1 gr) on type II GIC decrease the adhesion of S. mutans. This study, a sample made of type II GIC added with ZnO nanoparticles 0.1 gram, 0.5 gram and 1 gram then mixed with liquid of GIC. The sample is placed on an ebonite mold that has been perforated with a diameter of 6 mm and a thickness of 2 mm. Samples were immersed in S. mutans cultures. Samples that have been immersed are then washed and soaked in liquid media and then vibrated. Vibration results are planted on TYC and calculated using a colony counter then analyze with one way ANOVA. The results of this study showed the adhesion of S. mutans in the control group 78.20 CFU, group I 25 CFU, group II 12 CFU and group III 40.60 CFU. The addition 0.5 grams of ZnO nanoparticles on type II GIC optimally reduced the adhesion of S. mutans.