In this study, we tried to evaluate the effect of mesoporous bio-glass (MBG) on the closure effect of dentinal tubules and re-mineralization of enamel, and use it as basic clinical data. The purpose of this study was to compare the effects of MBG with...
In this study, we tried to evaluate the effect of mesoporous bio-glass (MBG) on the closure effect of dentinal tubules and re-mineralization of enamel, and use it as basic clinical data. The purpose of this study was to compare the effects of MBG with existing materials by producing and treating the concentrations of MBG differently at 0%, 0.5%, and 1%, respectively, and the most commonly used Gluma and Toothmousse were used as controls. A healthy tooth without caries was selected to cut the CEJ site in cross-section. In order to compare the effect of closure dentinal tubules, one specimen was divided into longitudinal sections and divided into left (observing the opening of upper bronchial tubes) and right (observing the closure of upper bronchial tubes). After the enamel surface was completely removed and polished to expose the ivory, the dentinal tubules were completely opened by acid treatment with Liquid phosphoric acid etchant for 60 seconds. In addition, the treated specimen was reacted to the prepared artificial saliva to increase the response of MBG. The degree of dentinal tubules closure was confirmed by magnifying it at a magnification of 5,000 through a field emission scanning electron microscope (FE-SEM), and the fully open dentinal tubules were set as Grade 0, and the partially open dentinal tubules were set as Grade 1, and the fully sealed dentinal tubules were set as Grade 2, and the reliability was verified by SPSS 10.0 through two tests. In this experiment, when the MBG concentration was 1%, there was a significant difference before and after treatment in Grade 2 (p=0.012). The higher the concentration of MBG, the higher the chemical activity between the materials, so it was found that MBG 1% was the most effective in closure dentinal tubules.
In this study, in order to confirm the re-mineralization of the enamel through MBG, the MBG concentrations were prepared and treated differently at 0%, 0.5%, and 1%, respectively, as in the previous study, and F-gel and Toothmousse were used as controls. The enamel area was cut into a rectangle by selecting the caries-free and healthy incisors, and the sample was first buried using dental acrylic resin. After polishing to expose the enamel surface flat, the specimen was divided by 1/2 and nail varnish was applied only to one area (right side) and dried. The changes in the enamel VHN value were compared before and after treatment, and the degree of inorganic matter loss was compared by obtaining the fluorescence loss ΔF value compared to the normal tooth before and after treatment through the QLF-D program. It was confirmed that there was a significant difference in VHN values before and after treatment in 1% of MBG (p<0.001). In addition, there was a significant difference between baseline and the ΔF value after the first treatment in 1% of MBG, and there was a significant difference between baseline and the ΔF value after the second treatment (p<0.001). As a result of confirming the enamel remineralization effect, it was confirmed that MBG 1% showed the highest hardness value increase and the least inorganic loss, and the enamel remineralization effect was the best.