Australia - The problem of tooth decay

Dental caries are a significant Australian public health problem. In 2014-15, A$9.5 billion was spent on dental services in Australia, up from $6.1 billion in 2007–08. In Australia, around 50% of children start primary school with largely untreated cavities. In Victoria, 7.1% of children aged under 12 have had a general anaesthetic for dental treatment.

Sugars provide food for the bacteria that dissolve tooth enamel. As sugar consumption increases, so do cavities. This damage is irreparable and individuals are left with life-long problems that require fillings, and possibly root canal work or extractions.

In addition, food acid (especially citric acid) causes dental erosion that can lead to the progressive loss of the surface of the tooth. This may require complex and lengthy treatment involving fillings, veneers and crowns. The sticky consistency of “gummies” adds to the problem.

The World Health Organisation (WHO) says higher rates of dental caries occur when the intake of free sugars (added sugar plus honey, syrups and sugars in fruit juices) is more than 10% of total energy intake. This is despite fluoride in drinking water and using toothpaste.

Dental caries rates decline progressively as sugar intake is reduced to less than 5% of total energy intake. Hence, for a range of health reasons, the WHO recommends we get no more than 5 to 10% of our daily energy from free sugars.