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Sparkling Water vs Soda: What's Better for Your Teeth?

Mayur Tembhare
  1. The mouth's pH must stay above 5.5 to prevent tooth enamel from dissolving.

  2. Unsweetened sparkling water may be a lower-risk alternative to sugar-sweetened soda.

  3. Soda caused the largest drop in mouth acidity in the study.

  4. Calcium-fortified sparkling water produced a decrease in salivary pH after 5 minutes.

Sparkling Water vs Soda: What's Better for Your Teeth?

Topic: Health

Scientists compared sparkling water and soda to see how they affect teeth. They found that unsweetened sparkling water may be a lower-risk alternative to soda, but it's still not perfect.

Unsweetened sparkling water may be a better option for your teeth than sugar-sweetened soda. This is according to a recent study that compared the effects of these drinks on acidity in the mouth.

Tooth enamel can start to dissolve when the mouth's pH falls below about 5.5. The researchers tested sugar-sweetened soda, regular sparkling water, calcium-fortified sparkling water, and plain water in 20 adults. They measured salivary pH rather than just looking at the acidity of the drinks themselves.

The results showed that soda caused the largest drop in mouth acidity. Regular unsweetened sparkling water caused a temporary decline in salivary pH after 2 minutes. Calcium-fortified sparkling water produced a decrease after 5 minutes. But with both types of sparkling water, pH returned to nearly its starting level within 20 minutes.

The researchers emphasized that the experiment only measured brief changes in salivary pH. The likelihood of dental erosion in everyday life can also be affected by how often you drink a beverage, how long your teeth are exposed to it, and whether the drink contains sugar.

Why It Matters

This study is important because many people in India drink sparkling water as an alternative to soda. Understanding its effects on oral health can help us make better choices for our teeth.

Key Facts

  • The mouth's pH must stay above 5.5 to prevent tooth enamel from dissolving.
  • Unsweetened sparkling water may be a lower-risk alternative to sugar-sweetened soda.
  • Soda caused the largest drop in mouth acidity in the study.
  • Calcium-fortified sparkling water produced a decrease in salivary pH after 5 minutes.
  • The experiment only measured brief changes in salivary pH.

Key Terms

pH
A measure of how acidic or basic something is, on a scale from 0 to 14.

Implications

This study is important because many people in India drink sparkling water as an alternative to soda. Understanding its effects on oral health can help us make better choices for our teeth.

Source: https://www.sciencedaily.com/releases/2026/07/260727012126.htm

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