Sugar-Free Drinks Destroy Tooth Enamel Cause Tooth Decay via Dental Erosion

Do Sugar-Free Drinks Cause Tooth Decay?

Diana Acosta

Many people opt for sugar-free drinks in order to spare their teeth from tooth decay and damage. However, a new study by researchers from Melbourne University found that sugar-free drinks are equally harmful to teeth.

  • Of the 23 “sugar-free” drinks tested, most softened dental enamel by 30 to 50 per cent.
  • Sugar free candies and sport drinks were also found to be high risk for tooth decay and oral disease
  • Dental erosion is due to the citric acid or phosphoric acid content of sugar-free drinks.

The researchers, led by professor Eric Reynolds from the Oral Health Cooperative Research Centre, investigated how 23 sugar-free drinks affected oral health and found that most of them caused the tooth’s enamel (the outer layer) to soften by a whopping 30 to 50 percent. These drinks included soda, flavored juices and flavored mineral waters.

How do sugar-free drinks cause tooth decay?

Plaque on teeth forms from the sugar people eat. Bacteria feed on this plaque and, as they do, an acid is produced that destroys enamel and causes tooth decay. In the same way, sugar-free drinks containing acid cause damage to teeth by stripping off the enamel.

Sugar free drinks cause the same amount of tooth decay as drinks  containing sugar. 

Continued consumption of these beverages can cause dental erosion to progress further, sometimes to the point of exposing a tooth’s inner soft pulp. Reynolds blamed the citric acid or phosphoric acid content of such drinks for the dental erosion.

“Many people believe soft drinks labeled sugar-free are completely safe for teeth, but unfortunately we’re finding these aren’t much better than the sugar-filled versions because of their potential to cause erosion of dental enamel,” said Reynolds.

Reynolds also said “… one in three children suffer from dental erosion”.

“We’ve seen bad erosion in the teeth of children aged 2 to 3 years old, and signs of erosion in permanent teeth of older children,” he noted, adding that if children will keep drinking these beverages, they “are likely to need extensive dental treatment by the time they reach their teens.”

Sugar-free candies, particularly orange or lemon flavored ones, likewise contain acids from the flavoring and destroy the teeth in the same way.

Sports drinks are not off the hook, either. After investigating eight sports drinks, the researchers found that six of them “caused significant enamel surface loss and enamel surface softening,” according to a briefing paper about the study.

Reynolds recommends a very simple way to avoid dental erosion: “To give your teeth, or your children’s teeth, the best chance, water is always a better choice.”

The study was published in the Australian Dental Journal.

If you consume sugar and sugar-free soft drinks, sports drinks or enjoy fruit flavored candies regularly, if might be time for a checkup. Call us at 1-646-484-0197 in Manhattan, New York City or book an appointment via ZocDoc.