Color stability of tooth surface after the resin infiltration technique combined with the application of bioactive glass for the treatment of early enamel caries
Objective To explore the influence of resin infiltration technique combined with the application of bioactive glass on the color stability of tooth surface of early enamel caries.Methods A total of 60 human premolars with an intact enamel were randomly divided into the Icon resin infiltration(ICON)group,ICON+0.1％NaCl group and ICON+bioactive glass group.In each group,premolars were subdivided into 4 groups and immersed in red wine,coffee,tea and artificial saliva.At 24 h,1 week,2 weeks and 4 weeks,color changes in premolars were assessed by calculating the ΔE value using a spectrophotometer.Results There were significant differences in the color stability of tooth surfaces of early enamel caries by different treatment approaches,immersed in different solutions and at different time points(P＜0.05).There was a significant difference in the ΔE value of premolars immersed in the four solutions,which was significantly greater in those immersed in the red wine,followed by the coffee,tea and artificial saliva(P＜0.05).The ΔE value of premolars immersed in the red wine and coffee at the four time points was greater than 3.7,indicating an unacceptable color change.There was a significant difference in the color stability after the treatment,which was significantly higher in ICON+bioactive glass group,followed by ICON+0.1％NaCl group and ICON group(P＜0.05).Conclusion Icon resin infiltration combined with bioactive glass provides a better color stability for the treatment of early enamel caries,which is featured by simple procedures,high safety and stable and long-lasting aesthetic outcome.
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