MANCHESTER: A new review of water fluoridation research reveals that its benefits, while still present, have diminished in recent decades. The study found a modest reduction in tooth decay among children in areas with fluoridated water, attributed to a slight decrease in decayed, missing, or filled teeth. However, the impact is notably smaller compared to findings from pre-1975 studies.
This shift is likely due to the widespread availability of fluoride toothpaste, which has significantly contributed to oral health advancements globally. Anne-Marie Glenny, a professor at the University of Manchester and co-author of the review, emphasized, “Society and health practices have changed considerably over time. Contemporary studies offer a clearer picture of the current relevance of water fluoridation.”
The analysis included data from 2,908 children in the UK and Australia after 1975, showing an average reduction of 0.24 decayed baby teeth per child. In contrast, earlier studies involving over 5,700 participants reported a more substantial reduction of 2.1 decayed teeth per child.
Despite the reduced benefit, water fluoridation remains cost-effective due to its low delivery cost per head. Co-author Lucy O’Malley cautioned that before introducing new fluoridation programs, decision-makers should consider factors like feasibility, acceptability, and ongoing monitoring to ensure optimal public health outcomes.
This review encourages a fresh look at water fluoridation in the modern era, highlighting the importance of evolving strategies to promote oral health in line with contemporary practices.