20 Mar 2020 --- Celebrated annually on March 20, World Oral Health Day is an initiative of the FDI World Dental Federation (FDI) to raise global awareness of the prevention and control of oral diseases. NutritionInsight speaks to experts in oral and dental health to determine the role nutrition has to play. Unsurprisingly, a balanced diet is key to promoting oral health, while the role of sugar is also flagged, as well as whether plant-based diets contribute to oral health.