Dental If fluoride concentration of community water is___________ppm, no need of any flouride supplement at any stage. A >1 ppm B >0.7 ppm C >2 ppm D >1.5 ppm 💡 Explanation If fluoride concentration of community water is___________ppm, no need of any flouride supplement at any stage. ✓ Correct Answer: B. >0.7 ppm