For healthy teeth, food and drinks should be free of added sugar whenever possible.
Tooth decay (dental caries) is a diet related disease. Sugars in the food and drinks you consume mix with the bacteria in the plaque on your teeth and produce acids. These acids attack the outer layers of the tooth (tooth enamel).
Consuming sweet food and drink between meals is a major cause of tooth decay; this is because there is no between-meal period for teeth to undergo recovery. The more often sweet foods and drinks are consumed, the higher the risk of tooth decay.
Brushing your teeth and cleaning between your teeth is important because it removes plaque. If the plaque isn’t removed, it builds up and can cause tooth decay and gum disease. You should brush your teeth at least twice a day.
Infant tooth decay
News: Dental decay linked to Chronic diseases
Last updated: 2014-01-31
https://www.dhsv.org.au/old/dental-advice/teeth-tips-and-facts/food-and-drink