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Longitudinal Assessment of Fluoride Concentrations in Public Drinking Water Supplies in New Zealand: Implications for Epidemiological Studies.

Community dentistry and oral epidemiology · Dean F, Chambers T, Pike C, Hobbs M, Broadbent J · 2026-10-14

Researchers tracked fluoride levels in New Zealand's public water supplies from 2000–2021 and found that residential moves between fluoridated and non-fluoridated areas could significantly misclassify exposure status in epidemiological studies, potentially biasing health outcome assessments.

A plain-English summary of the study's own findings — we don't add our own claims or interpretation. Read the full paper for the complete methods and results, and apply your own clinical judgement.

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