History of Dental Fluoride
Level 5 - mechanism / opinion, no new human data
Narrative historical review with no new human data or systematic synthesis (Level 5 by CEBM design analogy).
OpenAlex W4413795191 · doi:10.17107/kh.2025.30.30
What was done
This paper presents a narrative historical overview of the discovery and public health application of fluoride in preventing dental caries. It traces observations from 1634 through early 20th-century investigations by Frederick McKay, G.V. Black, and H.V. Churchill linking water fluoride to fluorosis and cavity prevention, H. Trendley Dean's establishment of optimal concentrations, and subsequent community trials starting in Grand Rapids in 1945.
What was found
The paper recounts that high natural fluoride levels in drinking water caused fluorosis alongside reduced caries rates, leading to an established target concentration of 0.7–1.2 ppm. Trials in the United States, Canada, the United Kingdom, and New Zealand demonstrated reductions in dental cavities, leading to international adoption by the 1960s. No specific numerical effect sizes, percentage reductions, or confidence intervals are reported in the abstract.
Why it matters
It provides a chronological synthesis of the scientific milestones and policy decisions that established community water fluoridation as a primary public health intervention against tooth decay.
Limits
The work is a non-systematic narrative review with no primary data, quantitative synthesis, or explicit methodology. The abstract provides no precise statistical measures of effectiveness or detailed safety metrics from modern trials.
Cited by
- supports Dental fluorosis was first discovered in the late 19th or early 20th century by a dentist in Colorado Springs observing endemic brown-stained teeth among local residents.