Propolis as a Treatment for Cervical Dentin Hypersensitivity

"10% propolis was prepared after mixing with 70% ethanol and distilled water based on the method described previously. Propolis and ethanol mixture was allowed to stay in dark place for two weeks. The mixture was stirred everyday intermittently for two weeks. Later the mixture was strained twice using filter paper to remove impurities.~Propolis in general are fairly stable without losing its antibacterial properties for over 12 months when stored without direct sunlight and at cool temperatures. Alcohol based extracts will have extended shelf life and hence ethanol-extracted propolis prepared was stored in dark amber colored bottle without any preservatives."