Recommended flouride concentration in water to prevent caries is: March 2010
Ans. C: 1ppm Water fluoridation is the process of adding fluoride to the water supply so that the level reaches approximately 1 pa fluoride per million pas water (ppm) or 1 milligram fluoride per liter of water (mg/ L); this is the optimal level for preventing tooth decay.
0
0.5 ppm
1ppm
1.5 ppm