This fact is from Water Fluoridation in Public Health Dentistry. It is a commonly tested concept in NEET MDS examinations. Understanding this fact is crucial for answering MCQs correctly.
Optimal fluoride = 0.7ppm current CDC recommendation
Safely Tolerated Dose = CLD divided by 4
Chronic fluoride toxicity = Dental and Skeletal fluorosis
Deans Index for dental fluorosis = 7 categories
Defluoridation methods = Nalgonda technique activated alumina
Community water fluoridation = most cost effective public health measure.