ABSTRACT
Background: Glass Ionomer Cement (GIC) as a liner has been continuously used in dental practice due to its ability to release fluoride, antibacterial effect, anticariogenic, and biocompatible. However, the antibacterial effect of GIC is not optimal against bacteria. It was found that propolis could increase antibacterial properties. Thus, this study tried to introduce ethanolic extracts of propolis (EEP) into GIC. On the other hand, the effect of EEP addition would affect other properties of the GIC. Objective: This study aims to evaluate the setting time of GIC and EEP. Methods: As a control, GIC without EEP was prepared by mixing the GIC powder and liquid. Samples that contain various concentrations of EEP were prepared by mixing the EEP gel with GIC powder and liquid simultaneously. The mixture was then put inside a mold and the setting time was measured using a Gilmore needle. Twelve samples were divided into four groups: Control, EEP 25%, EEP 30%, and EEP 35%. Results: GIC with the addition of EEP has a significantly higher setting time compared to the control. The fastest setting time of the GIC–EEP mixture was 11 minutes 30 seconds (EEP 25%) and the longest setting time was 13 minutes 40 seconds (EEP 35%). Conclusions: It can be concluded that the incorporation of EEP into GIC could significantly increase the setting time.
