KATHMANDU, March 22: World Oral Health Day was celebrated on Tuesday on the initiation of World Dental Federation (FDI). Different activities were organized in the country with the theme “Say Ahh: Think Mouth, Think Health” which inspires people to be conscious of ther oral and overall health, a statement issued on Tuesday stated. To celebrate the day, Nepal Dental Association, in cooperation with Pepsodent, organized a rally from Khulla Manch to Ratnapark. "More than 500 health enthusiasts and workers participated in the rally, according to the statement.