The professor reinforces that fluoride in water helps prevent tooth decay

Driving through downtown Dallas, you might see a striking banner hanging from the turnpike near the Walnut Hill exit on the Central Expressway (US 75): “Stop Fluoridation!” Below that, other banners call for action and warn of supposed dangers.

It is not the first time that fluoride has been at the center of public debate.

Since 1951, fluoride has been added community water supplies in many countries to prevent caries. Fluoridation began as an observation, then an idea that ended up as a scientific revolution 50 years later.

Fluoridation is the controlled careful addition of precise amount of fluoride in community water systems to enhance dental health, ensuring it remains safe without causing systemic adverse health effects.

The practice has been hailed as one of the “The 10 Greatest Public Health Achievements of the 20th Century.”

But with Robert F. Kennedy Jr., a staunch opponent of fluoridation of water supplies, chosen by President-elect Donald Trump to lead the Department of Health and Human Services; this progress is under threat.

I am a clinical professor with expertise in the treatment of dental carieswith over 30 years of experience in the prevention and treatment of early tooth decay. In my view, it is vital that we rely on evidence-based practices and research that have consistently shown that fluoride is the cornerstone of dental health, benefiting millions without adverse effects.

Fluoride in the water supply

Fluoride is a naturally occurring mineral found in water, soil and even some foods. Its role in oral health was first recognized in the early 20th century when researchers noticed lower caries rates in communities with naturally high fluoride levels in their water.

In 1945, Grand Rapids, Michigan became the world’s first city intentionally fluoridating his water supply. This decision came after thorough discussions with Dr. H. Trendley Dean, head of the dental hygiene unit at the National Institutes of Health at the time, and other public health agencies. The Michigan Department of Health has approved adding fluoride to the public water supply next year.

The city was chosen because of its low natural levels of fluoride, its large population of school-age children, and its proximity to Muskegon, which served as a control city. After 11 years, the results were remarkable: Cavity rates among children in Grand Rapids born after fluoridation began dropped by more than 60 percent.

By 2008, over 72% of the US population – over 200 million Americans – use Public water systems had access to fluoridated water.

This scientific breakthrough transformed dental care, turn caries in a preventable state for the first time in history.

Fluoride is naturally present in most water sources, but usually in very low concentrations to prevent caries. By adjusting the fluoride level to 0.7 milligrams per liter is recommendedequivalent to about three drops in a 55 gallon barrelit is done sufficient to strengthen tooth enamel.

Benefits of fluoride for dental health

The science is simple: Fluoride strengthens tooth enamelthe protective outer layer of teeth, promoting remineralization. It also makes teeth more resistant to acids produced by bacteria in the mouth. This helps prevent tooth decay, a a problem that remains widespread even in modern societies.

Fluoridated water has been studied extensively and its benefits are well documented. According to the Centers for Disease Control and Prevention, water fluoridation reduces cavities by about 25% in all age groups. It’s a public health measure that works passively – every sip of water helps protect your teeth, without requiring you to change your behavior.

This is particularly important for vulnerable populations. Low-income communities often face barriers to accessing dental care or products that contain fluoride, such as toothpaste. By fluoridating water, communities provide a safety net, ensuring that everyone benefits regardless of their circumstances.

Financially, it’s a smart investment. Research shows that for every dollar spent on fluoridation, communities save about US$20 in dental treatment costs. These savings come from fewer fillings, extractions and emergency visits – expenses that they disproportionately affect low-income communities.

Opposition to fluoridation

Despite its benefits, water fluoridation it is not without controversy. Opponents often argue that it infringes on personal choice – after all, most people don’t make it opt out of drinking community water. Others express concerns about potential health risks, such as fluoridationbone problems or thyroid problems.

Fluorosis, a condition caused by excessive fluoride exposure during childhood;is often cited as a cause for alarm. However, in most cases, it manifests as mild white spots on the teeth and is not harmful. Severe fluoridation is rare in areas with regulated fluoride levels.

What about other health risks? Decades of research, incl large-scale reviews by expert panels from around the world as well as the World Health Organization, have not found reliable evidence linking fluoridation to serious health problems when fluoride levels are kept within recommended limits. In fact, the fluoride concentration in drinking water is are carefully monitored to balance safety and efficacy.

The CDC oversees monitoring of fluoride levels in community water systems in the United States. Meanwhile, the Environmental Protection Agency establishes a safety standard 2 milligrams per liter to prevent mild to moderate dental fluorosis.

However, the debate continues, fueled by misinformation and mistrust of public health initiatives.

It is important to separate legitimate concerns from baseless claims and rely on the overwhelming body of evidence supporting the safety of fluoridation.

Alternatives Fluoride

For those who prefer to avoid fluoride, there are alternatives to consider. But they come with challenges.

Fluoride-free toothpaste is an option, but it is less effective in preventing tooth decay compared to products containing fluoride. Calcium-based treatments, such as hydroxyapatite toothpaste, are is gaining popularity as an alternative to fluoridealthough research on their effectiveness is still limited.

Diet also plays a key role. Reducing your consumption of sugary snacks and drinks can significantly reduce the risk of tooth decay. Incorporating foods such as crunchy vegetables, cheese and yogurt into your diet can help promote oral health stimulating saliva production and providing essential nutrients which strengthen tooth enamel.

However, these lifestyle changes require consistent effort and training – something not all people or communities have access to.

Community programs such as dental sealant initiatives can also help, especially for children. Sealants are thin coatings applied to the chewing surfaces of teeth, wear prevention in high risk areas. Although effective, these programs are more resource intensive and cannot be replicated the general, passive benefits of water fluoridation.

Ultimately, there are alternatives, but they put more burden on people and may not meet the needs of the most vulnerable populations.

Should fluoridation be a personal choice?

The argument that water fluoridation removes personal choice is one of the the most persuasive attitudes against its use. Why not leave fluoride in toothpaste and mouthwash, giving people the freedom to use it or not, some argue.

This perspective is understandable, but it overlooks the broader goals of public health. Fluoridation is like adding iodine to salt or vitamin D to milk. These are measures that prevent widespread health problems in a simple and cost-effective way. Such interventions do not involve the imposition of choices. it’s about providing a basic line of protection for everyone.

Without fluoridated water, low-income communities would bear the brunt increased dental disease. Children, in particular, would suffer more cavitiesleading to pain, missed school days and expensive treatments. Public health policies aim to prevent these outcomes while balancing individual liberties with collective well-being.

For those who wish to avoid fluoride, there are alternatives such as bottled or filtered water. At the same time, policymakers should continue to ensure that fluoridation levels are safe and effective by transparently addressing trust-building concerns.

As the fluoride debate continues, the main question is how best to protect everyone’s oral health. While removing fluoride may appeal to those who value personal choice, it risks undoing decades of progress against tooth decay.

Whether through fluoridation or other methods, oral health remains a public health priority. Addressing it requires thoughtful, evidence-based solutions that ensure equity, safety, and community well-being.