Can bottled water cause cavities?


Bottled water could be a key cause of delay, according to a dentist.

Contrary to what some may think, bottled water is not superior to that from the tap when it comes to dental health.

Dr Sohail Mohiuddin warned that many brands of bottled water contain an acidic pH level.

Posting on Tiktok, he found that one brand fell below a Ph of 7 – the level thought to be neutral. Anything below 7 is classed as acidic. 

While some brands came out above 7, one fell significantly short, with a pH level of just 5.5. 

Greater risk

But why does the Ph of the mouth matter?

Our pH level has a direct link to the health of our teeth and gum. A 5.5 pH level is the point at which teeth begin to demineralise and, therefore, puts them at risk of decay. 

The lower the pH level, the greater the risk for other health conditions such as obesity, heart disease and type 2 diabetes. 

Foods such as fizzy drinks, breads, sweets and even fruit all provide bacteria with more sugars to feed off. Consequently, the acid levels in the mouth increase.

Lack of fluoride

Too much bottled water can also lead to deficiencies in important minerals, such a fluoride. 

Fluoride helps to strengthen tooth structure as well as limits the ability for bacteria to produce acids from consumed sugars. 

While only 5.8 million people in the UK benefit from fluoridated tap water, it is also a provider of many other minerals.

As a result, many dentists recommend tap water as it is also a source for minerals such as magnesium, calcium and phosphorous. 

So is botted water bad for your teeth?

In comparison to fruit juice and fizzy drinks – absolutely not! And many branded waters hit the recommended pH level, therefore carrying minimal risk.

However be aware that some brands may be classed as 'acidic', increasing the chances of cavity development. 

If you are to drink bottled water, try to finish it within 30 minutes and look to neutralise the acids. This could be with a piece of sugar-free gum or brushing your teeth half an hour after finishing the drink.

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