To investigate the association between community water fluoridation and adverse birth outcomes, including birth weight.
Key Findings:
No statistically significant changes in birth weight associated with community water fluoridation.
The main difference-in-differences estimate showed a change of –0.53 g, not clinically meaningful.
Secondary outcomes, including rates of low birth weight, gestational length, and prematurity, showed no association with fluoridation.
Interpretation:
The study provides reassurance regarding the safety of community water fluoridation during pregnancy, countering concerns raised by previous observational studies.
Limitations:
The study is limited to the data available from the specified time period and geographic regions.
Potential exposure misclassification was addressed but may still exist.
Conclusion:
Community water fluoridation is not associated with adverse birth outcomes, contributing to the ongoing evaluation of its safety during pregnancy.
