School water fluoridation was first initiated in
**Core Concept**
School water fluoridation is a public health measure aimed at preventing dental caries by adding fluoride to community water supplies, particularly in schools. This practice is based on the concept of community water fluoridation, which has been widely adopted to promote oral health.
**Why the Correct Answer is Right**
The first community water fluoridation program was implemented in Grand Rapids, Michigan, USA in 1945. This initiative was led by Dr. H. Trendley Dean, a prominent dentist and researcher who demonstrated the efficacy of fluoride in preventing tooth decay. The introduction of fluoride into the water supply was done after thorough research and careful consideration of the potential risks and benefits. The program was later expanded to other communities, including schools, to reach children and adolescents who are most susceptible to dental caries.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as there is no record of school water fluoridation being initiated in this location. While there have been many community water fluoridation programs implemented in various parts of the world, this specific option is not associated with the first school water fluoridation program.
**Option B:** This option is incorrect as it is not the correct location of the first school water fluoridation program. While this location may have implemented community water fluoridation, it is not specifically associated with the first school water fluoridation program.
**Option C:** This option is incorrect as it is not the correct location of the first school water fluoridation program. This location may have implemented various public health initiatives, but it is not specifically associated with the first school water fluoridation program.
**Clinical Pearl / High-Yield Fact**
It's essential to note that the optimal level of fluoride in drinking water is between 0.7 and 1.2 milligrams per liter (mg/L). Excessive fluoride intake can lead to dental fluorosis, while inadequate intake may not provide sufficient protection against dental caries.
**Correct Answer:** D.